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PRODUCT SPECIFICATION 8

310

P R O D U C T S P E C I F I C A T I O NINTRODUCTION

TECHNICAL ENQUIRYLINE t 01275 377789 f 01275 377456 www.lafargeplasterboard.co.uk

Lafarge plasterboards

The Lafarge range offers a widechoice of plasterboards for variedapplications.

Deco systemThe Deco system is a range of pre-sealed tapered edge plasterboards.The factory coated paper iscombined with matching Decocompounds to eliminate therequirement to seal the wallboards.Predeco can be substituted for allstandard boards.Megadeco is the performance Decowallboard combining the propertiesof Firecheck, dBcheck andToughcheck wallboard.Hydrodeco can be substituted forMoisturecheck boards.

Toughcheck wallboard is a heavyduty plasterboard for use in activeenvironments such as schools,hospitals and hotels.

dBcheck and MR dBcheckwallboards are heavy wallboardswith improved acousticperformance.

Echeck wallboards are especiallydesigned for use within dwellings as defined by the latest ApprovedDocument E Regulations

Firecheck and MR Firecheckwallboards offer a higher degree of fire resistance than Standardwallboard.

Firecheck Coreboard is used inLafarge fire protection systems forenclosure of shafts and encasementof structural steel.

Standard wallboards with taperedor square edges are available in awide range of sizes. Plank is 19mmthick, 600mm wide Standardwallboard used in the constructionof high performance partitions and floors.

Acoustic Homespan wallboard is foruse with the Acoustic Homespansystem. 15mm thick 900mm wide.

Square edge baseboard and roundedge (lath) form a base for gypsumplastering.

Vapourcheck wallboard has ametallised film bonded to one face,which acts as a vapour control layerand can also give improved thermalperformance.

Moisturecheck wallboard isdesigned for those areas wheremoisture and humidity resistance are required, including bathroomsand kitchens.

Contour wallboard is a 6mm thickplasterboard designed for use onpartitions and ceilings where curvedsurfaces are required.

Thermalcheck board is a range ofplasterboard thermal laminatescomprising plasterboard bonded todifferent types of insulation to suit a variety of thermal requirements.

Summary of suitable applications for Lafarge wallboards

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Pred

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Plan

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Ther

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Moi

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Vapo

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Fire

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Aco

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Meg

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Core

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Cont

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MR

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BS 1230: 1985 Type 1 5 3,4 5 1 3,4 1 5 3,4,5 3,4,5 1 1 1 3,4 1 3,4 1 –

BS EN 520 A F,D,I D,H1 F,D,I D,I D,H1,I D D,F,I D,F,H1,I D,F,H1,I A A D D,H1 – H1 A –

Linings

Direct Bond ✔ ✔ ✔ ✔ ✔ ✔ ✔* ✔* ✔**

Contour Linings ✔ ✔

Cormet Dryliner ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔

Independent Wall Lining ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔

Linings to Timber frame ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔

Partitions

Homespan ✔ ✔

Timber Stud Partitions ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔

Metal Stud Partitions ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔

Curved Metal Stud Partitions ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔

Metal Stud High Performance ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔

Floors and Ceilings

Timber Frame ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔

Cormet Acoustic Floor ✔ ✔ ✔ ✔ ✔

Cormet Dryliner ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔

Cormet Suspended Ceilings ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔

Fire Protection

Cormet Shaftwall ✔ ✔ ✔ ✔ ✔ ✔

Cormet Encasements ✔ ✔ ✔ ✔ ✔

* Not a typical application

** Lafarge Multi Purpose Adhesive should be used in place of bonding compound as the adhesive

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P R O D U C T S P E C I F I C A T I O NCONTENTS

311

Contents page

Lafarge wallboards 312

Lafarge compounds 324

Lafarge screws 327

Cormet metal components 329

Cormet accessories 335

Cove 337

Lafarge profiles 338

312

P R O D U C T S P E C I F I C A T I O NLAFARGE WALLBOARDS


Pred

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deco

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MR

dBch

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dBch

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Eche

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MR

Fire

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Fire

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Fire

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Stan

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Base

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Aco

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MR

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Vapo

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Cont

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Range of board sizes

MR

Base

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Key:

T Tapered edge

S Square edge

R Round edge

Ther

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Thickness Width Length(mm) (mm)

6.0 1200 2400 T

9.5 600 1200 R

600 1220 R

900 1220 S S

900 1800 T S T S T S

900 2400 T S

1200 2400 T T S T S

1200 2700 T S

1200 3000 T S

12.5 600 1200 R

600 1220 R

900 1800 T S T S T S

900 2400 T S

1200 1800 S

1200 2350 T

1200 2400 T T T T T T T S T S T S T T

1200 2500 T T

1200 2700 T T T T T S T S T

1200 3000 T T T T T T T S T S T

1200 3600 T T

15.0 900 1800 T T S

900 2400 T T S T T

900 2700 T T

1200 1800* T

1200 2400 T T T T T S T T

1200 2700 T T T T

1200 3000 T T T T T T

19.0 600 2400 T S

600 2700 S

600 3000 S

25.0 600 3000 S

* Predeco only

Thickness Width Length(mm) (mm)

15.0 400 1300 T

1200 800 T T

1200 1200 T T

1200 1600 T T

Fres

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Wal

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Fres

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Pane

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Wai

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Fres

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Fres

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Mai

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Fres

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Range of Fresco board sizes

Lafarge Deco Plasterboard SystemThe Lafarge Deco system uses a pre-sealed paper board liner with a uniquepurpose-designed coating combined withcolour matched joint cements so that,once constructed, linings and partitionshave a consistent white appearanceready for final decoration. Use of Deco,therefore, eliminates the requirement for separate sealing of the wallboard

on-site, effectively saving one completeoperation, whilst maintaining highquality standards.

The Deco system comprises of a range of three boards:

Predeco can be substituted for allstandard wallboard applications

Predeco wallboardLafarge Predeco wallboard has onedecorative white face with taperededges and a grey faced back liner.

Principal applications

Lafarge Predeco wallboard is suitable forinstallation with stud partitions, liningsystems and ceilings.

Authority

Lafarge Predeco wallboard complies with BS 1230: Part 1: 1985 for gypsum wallboardType 1 and BS EN 520: 2004 Type A.

Weights

Board weights are:

9.5mm thickness 6 to 7 kg/m2


15mm thickness 9.8 to 11 kg/m2

Fire properties

Lafarge wallboards are defined as Class O in accordance with the National BuildingRegulations 1991 and meet Euroclasse A2.Refer to the performance tables elsewhere inthis publication for quoted fire resistance periods.

Thermal insulation

Thermal conductivity (λ) is 0.18 W/mK.

Thermal resistance (R) values are:

9.5mm thickness 0.052 m2K/W


15mm thickness 0.083 m2K/W

Sound insulation

Lafarge wallboards have shown, throughindependent testing, to offer excellent levelsof sound reduction when compared totraditional products. Refer to theperformance tables elsewhere in thispublication for quoted acoustic performance.

Finishing

The white face is pre-sealed and suitable fordirect decoration, after seamless taping andjointing with Lafarge Deco jointingcompounds only.

The Deco system is not suitable for skimplaster finish.

Paint application – Matt finish paints arelikely to produce a superior finish.

Note: Specialist gloss, eggshell and silkfinishes will highlight irregularities in thesurface finish. To reduce this risk, apply acoat of Lafarge Universal Sealer beforeapplying finish.

Megadeco is the performance Decowallboard combining the propertiesof Firecheck, dBcheck and Toughcheck

Hydrodeco can be substituted forMoisturecheck wallboard applications

The Deco system is not suitable forplaster skim finish.



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Hydrodeco wallboardLafarge Hydrodeco wallboard has onedecorative white face with taperededges and a green faced back liner.


Lafarge Hydrodeco wallboard is suitable forinstallation with stud partitions, liningsystems and ceilings that require superiormoisture resistance such as bathrooms.

Authority

Lafarge Hydrodeco wallboard complies withBS 1230: Part 1: 1985 for gypsum wallboardTypes 3 and 4 and BS EN 520: 2004 Type D,H1.

Weight

Board weight is:

12.5mm thickness 10.5 kg/m2

Fire properties


Thermal properties




Sound insulation


Finishing





Megadeco wallboardLafarge Megadeco wallboard has onedecorative white face with taperededges and a grey faced back liner.


Lafarge Megadeco wallboard is suitable forinstallation with stud partitions, liningsystems and ceilings that require superioracoustic, fire and impact performance.

Authority

Lafarge Megadeco wallboard complies withBS 1230: Part 1: 1985 for gypsum wallboardType 5 and BS EN 520: 2004 Type F, D, I.

Weights

Board weights are:

12.5mm thickness 11 kg/m2

15mm thickness 12.5 to 13.1 kg/m2

Fire properties


Thermal insulation

Thermal conductivity (λ) of LafargeMegadeco wallboard is 0.25 W/mK. Thermal resistance (R) values are:



Sound insulation

Lafarge wallboards have shown, throughindependent testing, to offer excellent levelsof sound reduction when compared totraditional products. Refer to theperformance tables else where in thispublication for quoted acoustic performance.

Breaking strength of board

Minimum breaking for 15mm thickness:

Transverse 445 N

Longitudinal 895 N

Finishing





314



Echeck wallboardLafarge Echeck wallboard has onedecorative light blue face with taperededges and a grey faced back liner.


Lafarge Echeck wallboard is suitable forinstallation with stud partitions, liningsystems and ceilings especially designed foruse within dwellings as defined by the latestApproved Document E regulations.

Authority

Lafarge Echeck wallboard complies with BS 1230: Part 1: 1985 for gypsum wallboard Type 1 and BS EN 520: 2004 Type D.

Weight

Board weight is:

12.5mm thickness not less than 10 kg/m2

Fire properties

Lafarge wallboards are defined as Class O in accordance with the National BuildingRegulations 1991 and meet Euroclasse A2.Refer to the performance tables elsewhere in this publication for quoted fire resistanceperiods.

Thermal properties




Sound insulation



Minimum breaking for 12.5mm thickness:

Transverse 265 N

Longitudinal 620 N

Finishing

The light blue face is suitable for seamlesstaping and jointing with Lafarge jointingcompounds, or for the application ofgypsum plasters manufactured to BS 1191:Part 1: 1973 Class B, Type b1 and b2.

dBcheck wallboardLafarge dBcheck wallboard has onedecorative blue face with tapered edgesand a grey faced back liner.

Lafarge Moisture Resistant dBcheck hasone decorative blue face with taperededges and a green faced back liner-please note this is manufactured tospecial order only.

Principal applicationsLafarge dBcheck wallboard is suitable forinstallation with stud partitions, liningsystems and ceilings that require superioracoustic performance.

AuthorityLafarge dBcheck wallboard complies with BS 1230: Part 1: 1985 for gypsum wallboardType 1 and BS EN 520: 2004 Types D and I.

Lafarge Moisture Resistant dBcheckwallboard complies with BS 1230: Part 1:1985 for gypsum wallboard types 3 and4and BS EN 520: 2004 Types D, H1 and I.

WeightsBoard weights are:

12.5mm thickness 10.2 to 10.7 kg/m2

15mm thickness 12.5 to 13.1 kg/m2.

Fire propertiesLafarge wallboards are defined as Class O in accordance with the National BuildingRegulations 1991 and meet Euroclasse A2.Refer to the performance tables elsewhere in this publication for quoted fire resistanceperiods.

Thermal propertiesThermal conductivity (λ) is 0.25 W/mK.



15mm thickness 0.060 m2K/W.

Sound insulationLafarge wallboards have shown, throughindependent testing, to offer excellent levels ofsound reduction when compared to traditionalproducts. Refer to the performance tableselsewhere in this publication for quotedacoustic performance.

Breaking strength of boardMinimum breaking for the following thickness:

12.5mm 15mm

Transverse 265 N 355 N

Longitudinal 550 N 685 N

FinishingThe blue face is suitable for seamless tapingand jointing with Lafarge jointing compounds,or for the application of gypsum plastersmanufactured to BS 1191: Part 1: 1973 Class B, Type b1 and b2.

A surface treatment of PVA and water shouldbe applied prior to an application of plaster toMoisture Resistant dBcheck. Please refer to thePVA manufacturer for guidance.

Toughcheck wallboardLafarge Toughcheck wallboard has onedecorative mustard face with taperededges and a mustard faced back liner.


Lafarge Toughcheck wallboard is suitable forinstallation with stud partitions, liningsystems and ceilings that require superioracoustic, fire and impact performance.

Authority

Lafarge Toughcheck wallboard complies with BS 1230: Part 1: 1985 for gypsumwallboard Type 5 and BS EN 520: 2004Types F, D and I.

Weight

Board weight is:


Fire properties

Lafarge wallboards are defined as Class O in accordance with the National BuildingRegulations 1991 and meet Euroclasse B.Refer to the performance tables elsewhere in this publication for quoted fire resistanceperiods.

Thermal properties




Sound insulation

Lafarge wallboards have shown, throughindependent testing, to offer excellent levelsof sound reduction when compared totraditional products. Refer to theperformance tables elsewhere in thispublication for quoted acousticperformance..



Transverse 400 N

Longitudinal 1010 N

Finishing

The mustard face is suitable for seamlesstaping and jointing with Lafarge jointingcompounds, or for the application ofgypsum plasters manufactured to BS 1191:Part 1: 1973 Class B, Type b1 and b2.

Lafarge plasterboards are high-qualitygypsum wallboards suitable for theconstruction of metal and timber studpartitions as well as ceilings, direct bondand structural steel framing. They consistof a gypsum plaster core bondedbetween two strong liner papers.

The purity of the gypsum corecontributes to the performance of theplasterboards, such as high strength, light weight, rigidity and workability.

The standard wallboards thus performwell over a range of environmentalconditions. Excellent handlingcharacteristics also ease installation on-site, reducing the number of damagedboards and wastage.

The high strength, quality liner papersare manufactured from recycled wastepaper and coloured to aid identification.

Adjusting the core composition of thesewallboards produces a range of

Performance Boards that retain all the benefits of the Standard wallboardsbut with enhanced qualities designed to meet the performance requirements of specific applications.

This section provides an insight into the extra performance achieved throughthe substitution of Standard wallboardwith Lafarge Performance Boards.

Lafarge Performance Boards



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8

Firecheck CoreboardLafarge Firecheck Coreboard has greenpaper liners, with square edges.


Lafarge Firecheck Coreboard is a highstrength plasterboard for use in the LafargeShaftwall and Column and Beam system forsteelwork fire encasement.

Authority

Lafarge Firecheck Coreboard complies with BS 1230: Part 1: 1985 for gypsum wallboardTypes 3, 4 and 5 and BS EN 520: 2004 TypesD, F, H1 and I.

Weight

Board weight is:


Fire protection


Thermal properties


Thermal resistance (R) value is:


Sound insulation


Firecheck wallboardLafarge Firecheck wallboard has onedecorative pink face with tapered edgesand a grey faced back liner.


Lafarge Firecheck wallboard is suitable forinstallation with stud partitions, liningsystems and ceilings that require superior fireperformance.

Authority

Lafarge Firecheck wallboard complies with BS 1230: Part 1: 1985 for gypsum wallboard Type 5 and BS EN 520: 2004 Types D, F and I.

Weights

Board weights are:



Fire properties

Lafarge wallboards are defined as Class O in accordance with the National BuildingRegulations 1991 and meets Euroclasse A2.Refer to the performance tables elsewhere inthis publication for quoted fire resistanceperiods.

Thermal properties





Sound insulation


Breaking strength of boardMinimum breaking for the following thickness:

12.5mm 15mm

Transverse 300 N 390 N

Longitudinal 625 N 655 N

Finishing

The pink face is suitable for seamless tapingand jointing with, Lafarge jointingcompounds, or for the application of gypsumplasters manufactured to BS 1191: Part 1:1973 Class B, Type b1 and b2.

Moisture Resistant FirecheckLafarge Moisture Resistant Firecheckwallboard has one decorative pink facewith tapered edges and a green facedback liner.


Lafarge Moisture Resistant Firecheckwallboard is suitable for installation with stud partitions, lining systems and ceilingsthat require superior fire and moistureresistance.

Authority

Lafarge Moisture Resistant Firecheckwallboard complies with BS 1230: Part 1:1985 for gypsum wallboard Types 3, 4 and 5and BS EN 520: 2004 Types D, F, H1 and I.

Weights

Board weights are:



Fire properties


Thermal properties





Sound insulation




Transverse 400 N

Longitudinal 730 N

Finishing

The pink face is suitable for seamless tapingand jointing with Lafarge jointing compounds,or for the application of gypsum plastersmanufactured to BS 1191: Part 1: 1973 Class B, Type b1 and b2.

A surface treatment of PVA and watershould be applied prior to an application ofplaster to Moisture Resistant Firecheck,please refer to the PVA manufacturer forguidance.

316



Standard wallboardLafarge Standard wallboard has onedecorative ivory face available witheither tapered edge or square edgeprofile and a grey faced back liner.


Lafarge Standard wallboard is suitable forinstallation with stud partitions, liningsystems and ceilings.

Authority

Lafarge Standard wallboard complies with BS 1230: Part 1: 1985 for gypsum wallboardType 1 and BS EN 520: 2004 Type A.

Weights

Board weights are:




Fire properties


Thermal properties






Sound insulation


Finishing

The ivory face is suitable for seamless tapingand jointing with Lafarge jointing compounds,or for the application of gypsum plastersmanufactured to BS 1191: Part 1: 1973 Class B, Type b1 and b2.

Lafarge PlankLafarge Plank has one ivory faceavailable with either tapered edge orsquare edge profile and a grey facedback liner.


Lafarge Plank is suitable for the drylining ofwalls, acoustic floors and ceilings and for theconstruction of stud partitions.

Authority

Lafarge Standard wallboard complies with BS 1230: Part 1: 1985 for gypsum wallboardType 1 and BS EN 520: 2004 Type A.

Weights

Board weights are:


Fire properties


Thermal properties




Sound insulation

Lafarge Plank has shown, throughindependent testing, to offer an exceptionaldegree of sound insulation. The soundinsulation will vary with the application andnumber of layers used. Refer to theperformance tables elsewhere in thispublication for quoted acoustic performance.

Finishing


Lafarge BaseboardLafarge Baseboard is a square edgedgypsum wallboard with grey faces bothsides. The Vapourcheck Baseboard has ametallised polyester film on one face.


Lafarge Baseboard is suitable as a lining onceilings requiring skim plastering.

Authority

Lafarge baseboard complies with BS 1230:Part 1: 1985 for gypsum wallboard Type 6and BS EN 520: 2004 Type P.

Weights

Board weights are:


Fire properties


Thermal properties




Sound insulation


Finishing

The grey faces are suitable for theapplication of gypsum plasters manufacturedto BS 1191: Part 1: 1973 Class B, Type b1and b2.



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Acoustic HomespanAcoustic Homespan has one decorativeivory face available with tapered edgeand a grey faced back liner.


Lafarge Acoustic Homespan is suitable forthe construction of Acoustic Homespanpartitions.

Authority

Lafarge Acoustic Homespan wallboardcomplies with BS 1230: Part 1: 1985 forgypsum wallboard Type 1 and BS EN 520:2004 Type D.

Lafarge Moisturecheck Acoustic Homespanwallboard complies with BS 1230: Part 1:1985 for gypsum wallboard Type 3 and 4and BS EN 520: 2004 Type D and H1.

Weights

Board weights are:


Fire properties

Lafarge wallboards are defined as Class O in accordance with the National BuildingRegulations 1991 and meets Euroclasse A2.Refer to the performance tables elsewhere in this publication for quoted fire resistanceperiods.

Thermal properties


Thermal resistance (R) value is:


Sound insulation

Cormet Acoustic Homespan Studs andAcoustic Homespan wallboard have beenshown through testing to be capable ofproviding a sound insulation of 40 RwdB, inaccordance with BS EN ISO 717-1: 1997.



Transverse 280 N

Longitudinal 630 N

Finishing


Lafarge LathLafarge Lath is a round edge gypsumwallboard with grey faces both sides.


Lafarge Lath is suitable as a lining board onceilings requiring skim plastering.

Authority

Lafarge Standard wallboard complies with BS 1230: Part 1: 1985 for gypsum wallboardType 6 and BS EN 520: 2004 Type P.

Weights

Board weights are:



Fire properties


Thermal properties





Sound insulation


Finishing

The grey faces are suitable for theapplication of gypsum plasters manufacturedto BS 1191: Part 1: 1973 Class B, Type b1and b2.

Vapourcheck wallboardLafarge Vapourcheck wallboard has onedecorative ivory face available witheither tapered edge or square edgeprofile and a silver metallised polyesterback liner.


Lafarge Vapourcheck wallboard is suitablefor installation with stud partitions, liningsystems and ceilings.

Authority

Lafarge Vapourcheck wallboard complies withBS 1230: Part 1: 1985 for gypsum wallboardType 1.

Weights

Board weights are:




Fire properties


Thermal properties


Thermal resistance (R) values, includingthermal resistance of both Vapourcheckboard and a 25mm cavity- when themetallised film is facing an empty cavity.




Water vapour resistance

The water vapour resistance of LafargeVapourcheck wallboard exceeds 100 MNs/gwhen tested in accordance with BS EN ISO12572: 2001.

Sound insulation


Finishing


318



FrescoLafarge Fresco consists of a gypsumplaster core with glass fibres and fillers.It has one decorative face with theembossing on the surface which iscoloured pink, emphasising the Firecheckproperties. The face is suitable for directdecoration. It is available with arecessed edge for taping and jointing.


Lafarge Fresco creates a panelled effect oninternal wall and ceiling linings, partitionsand even shaftwall linings.

Authority

Lafarge Fresco complies with BS 1230: Part 1: 1985 for gypsum wallboard Type 5.

Weights

Board weights are: 12.0 to 12.8 kg/m2.

Fire properties

Fresco is made using 15mm FirecheckWallboard but due to the embossing processcarries only the same fire performance as a12.5mm Firecheck Wallboard and meetsEuroclasse A2.

Thermal properties

Thermal conductivity (λ) is 0.25 W/mK.Thermal resistance (R) value is 0.063 m2K/W.

Sound insulation

Lafarge Fresco wallboard has improvedsound resisting properties over LafargeWallboard.

Finishing

The pink face is suitable for seamless tapingand jointing with, Lafarge jointingcompounds.

Moisturecheck wallboardLafarge Moisturecheck wallboard hasone decorative green face with taperededges and a green faced back liner.


Lafarge Moisturecheck wallboard is suitablefor installation with stud partitions, liningsystems and ceilings that require superiormoisture resistance.

Authority

Lafarge Moisturecheck wallboard complieswith BS 1230: Part 1: 1985 for gypsumwallboard Types 3 and 4 and BS EN 520:2004 Type H1.

Weights

Board weights are:



Fire properties

Lafarge wallboards are defined as Class O in accordance with the National BuildingRegulations 1991 and meet Euroclasse A2.Refer to the performance tables elsewhere inthis publication for quoted fire resistanceperiods.

Thermal properties

Thermal conductivity (λ) is 0.24 W/mk.Thermal resistance (R) values are:



Sound insulation




Transverse 245 N

Longitudinal 565 N

Finishing

The green face is suitable for seamlesstaping and jointing with Lafarge jointingcompounds, or for the application of gypsumplasters manufactured to BS 1191: Part 1:1973 Class B, Type b1 and b2.

A surface treatment of PVA and watershould be applied prior to an application ofplaster to Moisturecheck wallboard. Pleaserefer to the PVA manufacturer for guidance.

Contour wallboardLafarge Contour wallboard is alightweight, high strength 6mm thickplasterboard consisting of a glass mineralwool reinforced plater core bondedbetween two strong liner papers. It hasone ivory face with tapered edges,suitable for direct decoration or gypsumskim coat plastering.


Lafarge Contour wallboard enables curvedfeatures in wall linings, partitions and ceilingsto be created simply. It allows tight radiuscurves to be achieved on-site with speed,economy and ease without the expense ofcustom made components.

Lafarge Contour wallboard is also ideal for re-lining backgrounds which are in soundcondition, providing a very slim, cost-effectivesurface for direct decoration.

Weights

Board weights are:


Fire properties

Two layers of Lafarge Contour wallboard havefire resistance properties at least equivalent toone layer of 12.5mm lafarge Standardwallboard. Lafarge Contour wallboard hasbeen shown through testing to be capable ofproviding an excellent degree of fireresistance, depending on application.

Sound insulation

Two layers of Lafarge Contour wallboard havesound resistance properties at least equivalentto one layer of 12.5mm Lafarge Standardwallboard.

Finishing




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Thermalcheck boardsA plasterboard thermal laminatecomprising 9.5mm plasterboard bondedto insulation.


Lafarge Thermalcheck can be used as adrylining to external masonry walls or toupgrade existing constructions, loft spaces,ceilings or renovations.

Authority

Lafarge Standard wallboard complies with BS 1230: Part 1: 1985 for gypsum wallboardType 1.

Polystyrene complies with the requirementsof BS 3837: Part 1 and 2 ‘Specification forboards manufactured fromexpanded/extruded polystyrene incorporatinga flame retardant additive’.

Weights

See tables on right for weights.

Fire properties

Lafarge Thermalcheck wallboard has beenshown through testing to be capable ofproviding an excellent degree of fireresistance, depending on the application.Thermalcheck wallboards are designatedEuroclasse B.

Thermal properties

Thermal conductivity (λ) values are:

Lafarge wallboard 0.18 W/mK

Expanded polystyrene 0.038 W/mK

Extruded polystyrene 0.030 W/mK

Phenolic foam 0.023-0.024 W/mK

See tables on right for thermal resistance ofindividual boards.

Finishing


ThermalcheckA plasterboard thermal laminate comprising 9.5mmplasterboard bonded to expanded polystyrene.

Thermal and vapour resistance and weight Thickness R value Water vapour Weight

(m2K/W) resistance (MNs/g) (kg/m2)

22.0 0.36 2.31 6.3

30.0 0.57 3.47 6.4

40.0 0.84 4.92 6.5

50.0 1.10 6.37 6.6

Note: A Vapourcheck layer can be specified with water vapour resistanceof 100 MNs/g.

Thermalcheck XPA plasterboard thermal laminate comprising 9.5mmplasterboard bonded to extruded polystyrene.



27.0 0.61 9.07 6.7

35.0 0.88 13.07 6.9

46.0 1.25 18.57 7.2

55.0 1.55 23.07 7.4

Thermalcheck KA plasterboard thermal laminate comprising 9.5mm ivoryfaced plasterboard bonded to Phenolic foam. Avapourcheck barrier is provided as standard.



30.0 0.88 114.0 7.2

40.0 1.35 114.0 7.7

50.0 1.79 114.0 8.2

60.0 2.32 114.0 8.7

Thermalcheck SheathingLafarge Thermalcheck Sheathing is a plasterboard thermallaminate comprising 12.5mm Lafarge MoisturecheckWallboard bonded to extruded polystyrene.

It is for use in framed constructions.



25.0 0.46 5.75 9.8

320



Fixing to Lafarge wallboards

Drywall constructions canaccommodate most fixturesproviding the appropriate fixings or fixing provisions are used.

Where the locations of fixtures areknown before the construction iscommenced, fixing provisions can be designed and installed into theconstruction.

Alternatively, fixtures can beattached directly to the finished drylinings using the recommendedfixings given in table 3.23.

For the medium and heavyweightfixings in table 3.23 it is veryimportant that the plasterboard iscarefully and accurately drilled andthat all fixings are installed as perthe manufacturer’s instructions.Holes should never be punched. On the bigger fixtures, it is necessaryto use a minimum of four fixings.

Table 3.23 FixturesFixture load Examples Fixing provisions* Notes

Very light Small pictures Picture hooks

Wood screws

Light Mirrors Spit Driva LD See manufacturer’s

Floor cupboards Spit Driva original literature for

Light fittings Spit Diva PlusMaximum loadings

Coat hooks Fixing channel

Medium Radiators Spit Spring Toggle See manufacturer’s

Wall cupboards Spit Hollow Anchor literature for

Water heaters Spit SatelisMaximum loadings

Sanitary ware Fixing Channel

Timber battens

Boxed studs

Extra studs

Heavy Wall mounted sanitary ware See diagrams on opposite page

Large wall cupboards

Heavy shelving

* See manufacturer’s literature for maximum loadings

Spit Driva LD

Spit Driva Original

Spit Spring Toggle

Spit Driva Plus

Spit Hollow Wall Anchor

Spit Satelis



321

8

For medium weight items

Cormet Fixing Channel or FS90/WCormet Flat Strap secured tostuds with Lafarge Wafer HeadScrews

For heavy weight items

Timber support

Vertical timber framingas required

Floor channel

300mm length ofCormet stud screwfixed back to back tomain stud with Lafargeself-tapping screws

Horizontal nogging and centralstud of sawn softwood to suit sizeof Cormet metal studs and notchedinto them and fixed through ends

Plywood support

18mm plywood600x300mm

CormetMetalAngle

Rebate onplywood

Plywood patress

12mm plywood560x1200mm

Cormet U Track tosecure back of plywood

Drywalladhesive dabs

Lafarge Drywall screws100mm from stud centres

600mm min

322



Tips on installation

Board fixingFor fixing to timber, use nails orscrews as specified in tables 8.4 or 8.5.For fixing to metal, use screws asspecified in table 8.4.

Lafarge Drywall Screws

Bugle head screws for fixingplasterboard to metal or timberstuds. Lafarge Drywall Screws havea unique head design to eliminatepaper burrs and provide a flushfinish. Extra-sharp points and high-grip threads result in fastpenetration through theplasterboard and stud. The screwsare black phosphate coated andlightly oiled for protection againstcorrosion.

Lafarge Drywall High Thread Screwsare used for attaching plasterboardto timber framework.

Lafarge Drywall Self Tapping Screwsare for light gauge metal up to0.7mm thick.

Lafarge Drywall Self Drilling Screwsare for heavy gauge metal from0.7mm to approximately 2.0mm thick.

Installation

Drive Screws:

• at least 10mm in from paper-bound edges of plasterboard

• at least 13mm in from cut edgesof plasterboard

• at least 6mm in from edges oftimber framing

• at least 3mm in from the edges of metal framing.

Screw spacing: Partitions, maximum300mm. Ceilings, maximum 230mmin the field of the plasterboard,150mm at cut edges and perimeter.Linings, maximum 300mm.

Table 8.5 Recommended naillengths for timber framingConstruction Plasterboard Nail Length

thickness (mm) (mm)

Single layer 12.5 40

15.0 40

19.0 50

Double layer 12.5 + 12.5 50

12.5 + 19.0 65

15.0 + 15.0 65

Drive screws squarely through boardand into framing until screw head isjust recessed. Spot screw heads withLafarge jointing compound toprovide a flush surface.

Lafarge Pan Head Screws andLafarge Wafer Head Screws are usedprimarily for fixing Cormet metalstuds and other Cormet metalframing components together: self-tapping for light gauge metal andself-drilling for heavy gauge metal.

Lafarge Toughcheck Screws are usedfor fixing Lafarge Toughcheckwallboard.

Table 8.4 Recommended screwlengths*Construction Plasterboard Screw

thickness (mm) length (mm)

Timber framing 6 32


15.0 38

19.0 41

Timber framing 6 + 6 38

Double layer 12.5 + 12.5 51

12.5 + 19.0 63

15.0 + 15.0 63

Metal framing 6 25


15.0 32

19.0 38

25.0 41

Metal framing 6 + 6 25

12.5 + 12.5 38

15.0 + 15.0 44

12.5 + 19.0 51

25.0 + 12.5 57

25.0 + 25.0 63

* Except for fixing to Cormet metal furring wall channelsand Resilient Bar. See table 4.16 on page 184.

Lafarge Checkpoint Screws are usedfor fixing Lafarge Moisturecheck,dBcheck and Firecheck wallboards to light gauge Cormet metal studs.

Lafarge Drywall Nails

Zinc-coated ring shanked DrywallNails with a thin wide head formaximum board holding withoutpaper breakage. The long, sharpdiamond point ensures ease offixing. Complies with BS 8212: 1995for fixing plasterboard to timber.

Installation

Drive nails:

• at least 10mm in from paper-bound edges of plasterboard

• at least 13mm in from cut edgesof plasterboard

• at least 6mm in from edges oftimber framing.

Nail spacing: maximum 150mm (all systems).

Drive nails squarely throughplasterboard and into timber framingusing a dimple head drywall hammeruntil the nail head is just recessed.Spot nail heads with Lafargejointing compound to provide a flushsurface.

3 10 310

Up to 3mmgap betweenplasterboards

Fixing position at bound edges ofboards

3 13 310

Fixing positions at bound edge/cutedge joint

3 13 313

Fixing positions at cut edges ofboards

Minimum3mm fromedge ofmetalframe

Minimum 10mmfrom edge ofwallboard









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8

Tiling onto LafargeWallboardTiling is suitable for a wide range ofapplications with varying conditions,ranging from domestic splashbacksto shower cubicles in publicbuildings.

Ceramic tiling should be applied to Lafarge wallboards or LafargeMoisturecheck wallboard dependingon the severity of the conditions.Lafarge wallboards may be used asthe base for tiling in areas such assplashbacks behind kitchen sinks andwash hand basins. In other areaswhere there is likely to be moresplashing of water on the surface,e.g. showers, it is preferable to useLafarge Moisturecheck wallboard. If Lafarge wallboards are used itshould be treated on the face withtwo coats of Lafarge Drywall Sealer.

Where the tiling is to cover theentire drylined wall surface, squareedge boards may be used. Where an area of the drylining will remainuntiled, taper edge boards shouldbe used so that flush joints can beformed in the exposed areas; in thiscase the concealed joints should befilled with a waterproof ceramic tileadhesive.

Care should be taken to ensure thatthe framing members and liningboards offer adequate support toprevent flexing, particularly forpartitions which may be tiled on oneside only. Tiled areas not extendingdown to the floor should beprovided with horizontal supports at the base of the tiling.

Additional support requirements aregiven in table 8.6. Supports forbaths, basins and other plumbingfixtures must be providedindependently of the plasterboard.

It is essential that detailing atjunctions, angles and perimeters is designed to prevent moisturepenetration. Seal around pipes,baths, shower fittings, openings and outlets with a waterproofsilicone sealant.

Recommendations in table 8.6 applyto the use of tiles up to 12.5mmthick with a maximum weight of 32 kg/m2, fixed in accordance withBS 6431: Part 9, using a thin-bedadhesive (nominal thickness 3mm).**

Drylining systems using LafargeBonding Compound in theirconstruction should be allowed 10 days to achieve their full strengthbefore tiling.

Repairs

Minor damage to plasterboard maybe repaired by filling with LafargeFast Set and sanding smooth. Areasof damage too large for fillingshould be repaired by one of themethods below.

Cut out a rectangular piece of theboarding around the damaged areausing a fine-toothed keyhole saw.Bevel the edges of the hole inwardsat 45º with a rasp or sanding block.Cut a piece of board to the samesize as the hole and bevel the edgesto an exact fit. Apply Lafarge FastSet to the edges of the hole and fitthe patch piece in place usingLafarge Patching Tape (leave to

set for 1 hour). Finish around thepatch as described under Jointing in Section 7.

If necessary, bond a strip ofplasterboard behind the hole toprovide extra support beforeinserting the patch piece.

For larger repairs, cut a rectangularpiece of plasterboard 50mm largerthan the hole or damaged area.Place it over the hole and mark itsposition. Cut through the damagedboard along the diagonals of themarked rectangle with a fine-toothed keyhole saw; then cutthrough the paper facing aroundthe rectangle with a sharp knife,break away and remove the cutpieces of the wallboard.

Cut two backing pieces ofplasterboard and bond to the backof the boarding using Lafarge FastSet on each side of the hole; leaveto set for 1 hour.

Apply Lafarge Fast Set to thebacking pieces and fit the patchpiece of plasterboard into the holeusing Lafarge Patching Tape (leaveto set for 1 hour). Finish around thepatch as described in Section 7.

Table 8.6 Plasterboard to receive ceramic tiling (BS 8212)System Board Support Additional support Maximum

thickness centres tiling height(mm) (mm) (m)

Drylining Direct Bond 12.5 450* Horizontal dabs at 1/3 centres in height 3.6

Lafarge Dryliner 12.5 400 – 3.6

Independent 70mm I Studs 2 x 12.5 400 Mid-point support 3.0

Partitions Laminated 50, 63 – None 2.4

55, 70 – None 2.6

Timber 12.5 400 – 450 None 3.0

12.5 600 Timber noggings at 600mm vertical centres 2.4

Lafarge Cormet 50mm studs 2 x 12.5 400 None 3.6

metal stud 70mm studs 2 x 12.5 400 None 3.6

146mm studs 2 x 12.5 600 Additional studs at 300mm centres up to tile height

*Bonding compound dab row centres

**Full specification for ceramic tiling to plasterboard is available from the Tile Association, Forum Court, 83 Copers Road, Beckenham, Kent, BR3 1NR

324

P R O D U C T S P E C I F I C A T I O NLAFARGE COMPOUNDS


Lafarge Taping and JointingSystemLafarge Taping and Jointing systemis used to create continuous seamlessplasterboard walls and ceilings usingeasy application methods, includingtwo coat systems.

It is used for jointing:

• Tapered edge wallboard

• All internal and external cornerjoints

• Lafarge Fresco

• Lafarge Profiles

Jointing Compounds

Lafarge jointing compounds areexceptionally smooth to work andeasy to sand for a very fine finish.Consistent working times and strongadhesion coupled with superiorcoverage and excellent workabilityhelp produce continuous seamlessjoints.

Table 8.7 Use of jointing compoundsProduct Product Bedding Filling Finishing Sanding

type tape coat coat paper

New Pure Velvet Air-drying ✓ ✓ ✓ 150 grit

Fast Set Setting ✓ ✓ ✗

Easy Finish Air-drying, setting ✓ Not required ✓ 120 grit

FineForm Mid-Weight Air-drying ✓ ✓ ✓ 120 grit

Readymix Lite Air-drying ✓ Not required ✓ 150 grit

Predeco Filler Setting ✓ ✓ ✗

Deco Joint Cement Air-drying ✓ Not required ✓ 150 grit

Rapid Sand Air-drying ✓ Not required ✓ 150 grit

Deco Machine Joint Cement Air-drying ✓ ✓ ✓ 150 grit

Lafarge CompoundsFast Set Description Application Code reference Bag size

FAST 12.5 kg

Easy Finish Description Application Code reference Bag size

EASY FINISH 10 kg

New Pure Velvet Description Application Code reference Bag size

NPURE 25 kg

Rapid Sand Description Application Code reference Bag size

RAPID 22.5 kg

A two-stage low shrinkagecompound with a 90 minute set timefor bedding tapes and finishingjoints, Lafarge Tape-on Corner beadsand Lafarge Flex Tape as well asCorner beads. Sanded with 120 gritsandpaper. Also for bedding LafargeTape-On Corner Beads, Lafarge FlexTape and Lafarge Corner Beads.

Hand application

only

Gypsum based jointing compoundwith a 90 minutes setting time, usedfor bedding tapes and filling joints.

Also for bedding:

• Lafarge Tape-on Corner beads

• Lafarge Flex Tape

• Corner beads

Hand applicationonly.

An air-drying powdered compoundfor bedding tapes and finishingjoints as a three coat application notsuitable for bedding cornerprotection. Can be applied over FastSet as a finish and sanded with 150grit paper.

Can be applied byhand or mechanicalmethods.

A light weight air-drying compoundfor bedding tapes and finishingjoints, either by hand or using amachine. Rapid Sand allows thejointing operation to be completedin two stages. Sand with 120/150grit paper.




325

8

Lafarge Compounds (ctd)FineForm Mid-Weight Description Application Code reference Bucket size

FINEM 20 kg

Readymix Lite Description Application Code reference Bucket size

RLITE 20 kg

Universal Texture Description Application Code reference Bag size

UNITEX 25 kg

Sealertex Description Application Code reference Bucket size

SEALTEX 10 litres

Universal Sealer Description Performance Code reference Bucket size

UNISEAL 10 litres

Drywall Sealer Description Performance Code reference Bucket size

SEAL10 10 litres

Bonding Compound Description Performance Code reference Bag size

BOND25 25 kg

A lightweight air-drying pre-mixed,two coat joint cement. For beddingtapes and finishing joints.

Not suitable for bedding cornerprotection.

Can be applied byhand or mechanicaljointing, sandedwith 150 gritsandpaper.

A crack resistant decorative finish tointerior walls and ceilings.

Warm and coldwater mix

Plasterboard sealer used prior totexture finish application.

Used for sealing plasterboard priorto decoration and to seal the ivoryface prior to applying a texture finishin humid, damp or winter conditions.

It allows wallpaper to be strippedand helps prevent discolouration topaint in humid and damp conditions.

A predecoration plasterboard primerfor internal decoration. One coatprepares drywall for decoration andallows wallpaper to be stripped.

Two coats providesa vapour controllayer ofapproximately 15 MNs/g whenapplied to BS 3177.

Universal Sealerdoes not provide avapour controlbarrier.

Gypsum based Bonding Compoundused for bonding plasterboards tomasonry backgrounds, except forVapourcheck and Thermal laminates.Used to bond laminated partitionsand bonding Cormet metal furringsto masonry backgrounds.

Working time of70* minutes,setting time 110*minutes.

(* approximate)

An air-drying pre-mixed jointcompound for bedding tapes andfinishing joints as a three coatapplication.

Not suitable for bedding cornerprotection. Can be applied over FastSet or Easy Finish as a finish andsanded with 120 grit sandpaper.


Must be applied to comply with BS 8212: 1995, Code of practice for dry lining and partitioning using gypsum plasterboard.

Does not protect against condensation staining, for staining protection specify Universal Sealer.

Lafarge Compounds (ctd)Multi Purpose Adhesive Description Application Code reference Bag size

ADHESIVE 25 kg

Drywall Adhesive Description Application Code reference Bucket size

RDA5 5 litres

Supreme Skim Plaster Description Application Code reference Bag size

SKIMPLAST 25 kg

Deco Joint Filler Description Application Code reference Bag size

PDFILL 12.5 kg

Deco Joint Cement Description Application Code reference Bucket size

DCEM 20 kg

Deco Machine Description Application Code reference Bucket size

DMAC 20 kg

Cove Adhesive Description Application Code reference Bag size

COVEADH5 5 kg

COVEADH125 12.5 kg

326



A gypsum based adhesive Lafargeformulated for bonding Thermallaminates to masonry backgrounds. It is pink colour to distinguish theproduct from Lafarge BondingCompound.

Working time of 70* minutes, settingtime 110* minutes.

(*approximate)

For bonding plasterboard andthermal laminates to variousbackgrounds, including ceramic tiles,plaster backgrounds and plasterboardto plasterboard.

Lafarge Supreme Skim is a lightcoloured gypsum based board finishplaster.

It can be applied to plasterboardbackgrounds to produce a highquality finish.

A unique setting compound forbedding tapes and filling joints onthe Deco range of boards. It must beover coated with Deco Joint Cementor Deco Machine.

Also for bedding:• Lafarge Tape-On Corner bead • Lafarge Flex Tape

Cannot be used inautomatic tapingmachines.

A unique pre-mixed two-stage, air-drying joint cement. Designed forbedding tapes and finishing jointsfor the Deco range of boards.

Can be applied by hand ormechanical jointing and sanded with150 grit sandpaper.

Not suitable forbedding cornerprotection.

Lafarge Cove Adhesive is a gypsumbased compound with a 40 minutesetting time. It has exceptionalsmoothness for ease of applicationand dries white for ease ofdecoration.

Lafarge CoveAdhesive is idealfor filling andpatching LafargeCove.

Should be used on plasterboard front (ivory) face.

A unique pre-mixed air-drying cementdesigned for bedding tapes and finishingjoints for the Deco range of boards.Formulated for use through automatictaping tools.

Sand with 150/120 grit paper. May behand applied.



P R O D U C T S P E C I F I C A T I O NLAFARGE SCREWS

327

8

Lafarge Self Tapping ScrewsDrywall Self Tapping Description Length Gauge 2.5Kg Box (approx) 0.5Kg Box (approx)

(mm) Code Quantity Code Quantity

25 6 25DST25 1730 25DST5 364

32 6 32DST25 1524 32DST5 305

38 6 38DST25 1277 38DST5 255

41 6 41DST25 1222 41DST5 244

44 6 44DST25 1158 44DST5 232

51 7 51DST25 896 51DST5 179

57 7 57DST25 784 57DST5 157

63 8 63DST25 630 63DST5 126

76 8 76DST25 520 76DST5 104

Pan Head Self Tapping Description Length Gauge 2.5Kg Box (approx) 0.5Kg Box (approx)(mm) Code Quantity Code Quantity

11 6 11PHST25 1917 11PHST5 381

Trim Head Self Tapping Description Length Gauge 2.5Kg Box (approx)(mm) Code Quantity

41 7 41THST25 1022

57 7 57THST25 744

Wafer Head Self Tapping Description Length Gauge 2.5Kg Box (approx) 0.5Kg Box (approx)(mm) Code Quantity Code Quantity

14 8 14WHST25 1495 14WHST5 299

Toughcheck Self Tapping Description Length Gauge 2.5Kg Box (approx)(mm) Code Quantity

25 7 25NGRST25 1817

41 7 41NGRST25 1180

Checkpoint Self Tapping Description Length Gauge 2.5Kg Box (approx)(mm) Code Quantity

25 6 25CPST25 1800

41 6 41CPST25 1175

Megadeco Self Tapping Description Length Gauge Box of 1000 screws(mm) Code Weight (kg)

25 7 25MST16 1.61

32 7 32MST20 1.99

38 7 38MST23 2.30

44 7 44MST25 2.48

For attaching plasterboard to lightgauge metal stud partitioning (up to0.7mm) and ceiling systems.

For connecting light gauge metalcomponents (up to 0.7mm).

Self embedding screws for attachingwood trims and aluminium profilesto metal framing (up to 0.7mm).

Low profile head for connecting lightgauge metal components (up to0.7mm) beneath plasterboard.

For attaching Lafarge ToughcheckWallboard to light gauge metalpartitioning (up to 0.7mm) andceiling systems.

A Drywall screw specifically designedfor fixing high performanceplasterboards.

A zinc coated drywall screwspecifically designed for fixingMegadeco to light gauge metal andceiling systems.

328

P R O D U C T S P E C I F I C A T I O NLAFARGE SCREWS


Lafarge High Thread ScrewsDrywall High Thread Description Length Gauge 2.5Kg Box (approx) 0.5Kg Box (approx)


32 6 32DHT25 1529 32DHT5 306

38 6 38DHT25 1304 38DHT5 261

41 6 41DHT25 1239 41DHT5 247

51 7 51DHT25 898 51DHT5 180

63 8 63DHT25 619 63DHT5 124

76 8 76DHT25 576 76DHT5 107

Laminating High Thread Description Length Gauge 2.5Kg Box (approx)(mm) Code Quantity

32 10 32LHT25 855

38 10 38LHT25 726

44 10 44LHT25 662

High Grip screws for retainingplasterboards in laminatingpartitions.

For attaching plasterboard to timberstud partitioning and ceiling joists/rafters.

Lafarge Self Drilling ScrewsDrywall Self Drilling Description Length Gauge 2.5Kg Box (approx) 0.5Kg Box (approx)


25 6 25DSD25 1662 25DSD5 332

32 6 32DSD25 1376 32DSD5 299

38 6 38DSD25 1191

44 6 44DSD25 1006

67 8 67DSD25 500

Wafer Head Description Length Gauge 2.5Kg Box (approx)Self Drilling (mm) Code Quantity

14 8 14WHSD25 1379

Toughcheck Drywall Description Length Gauge 2.5Kg Box (approx)Self Drilling (mm) Code Quantity

38 7 38GRSD25 1165

Pan Head Self Drilling Description Length Gauge 2.5Kg Box (approx) 0.5Kg Box (approx)(mm) Code Quantity Code Quantity

11 6 11PHSD25 2032 11PHSD5 406For connecting heavy gauge metalcomponents (up to 2mm gauge).

Low profile head for connectingheavy gauge components (up to2mm gauge) beneath plasterboard.

For use with Lafarge ToughcheckWallboard in multi-layer applicationsto heavy gauge metal wall andceiling systems (up to 2mm gauge).

For attaching plasterboard to heavygauge metal stud partitioning (up to2mm gauge) and ceiling systems.

Acoustic ScrewsAcoustic Floor Screw Description Length Gauge Box

(mm) Code Quantity

63 7 63AFST25 699 For use in the Lafarge CormetAcoustic Floor system. For fixing thefloor boards to the Cormet MetalAngles.


P R O D U C T S P E C I F I C A T I O NCORMET METAL COMPONENTS

329

8

Metal specificationsCormet metal sections are used toprovide the steel frame forplasterboard wall linings andpartitions.

The sections are available in thefollowing gauges:

R = Red gauge 0.5-0.55mm

B = Blue gauge 0.70mm

W = White gauge 0.90mm

Y = Yellow gauge 1.2mm

Cormet Metal SectionsC Stud Description Width (mm) Lengths (mm) Code reference

50 2400, 2700, 3000, 3600 CS50/R

60 2400, 2700, 3000, 3600, 4200 CS60/R

70 2400, 2700, 3000, 3300, 3600, 4200, 4800 CS70/R

90 2700, 3000, 3600, 4000, 4200 CS90/R

146 2400, 2700, 3000, 3600, 4200, 4800 CS146/R

70 3600, 4200 CS70/B

90 3600, 4200 CS90/B

146 3600, 4200, 4800, 5400, 6000 CS146/B

90 4800, 6000, 7200 CS90/W

70 4800 CS70/Y

90 3600, 4800, 6000 CS90/Y

146 6000 CS146/Y

U Track Description Width (mm) Lengths (mm) Code reference

52 3000 UT52/R

62 3000 UT62/R

72 3000 UT72/R

72 3000 UT72/B

92 3000 UT92/R

148 3000 UT148/R

U Track Deep Flange Description Width (mm) Lengths (mm) Code reference

52 3000 UDT52/B

62 3000 UDT62/B

72 3000 UDT72/B

92 3000 UDT92/B

148 3000 UDT148/B

U Track Extra Deep Flange Description Width (mm) Lengths (mm) Code reference

72 3000 UXT72/B

94 3000 UXT94/B

92 3000 UXT92/W

94 3000 UXT94/W

148 3000 UXT148/W

Galvanised metal C shaped sectionused with Cormet U Track to providesteel frame for plasterboard walllinings and partitions.

Galvanised metal U shaped sectionused with Cormet C Studs to providemetal frame for plasterboard walllinings and partitions.

R gauge tracks are fully knurled,where as B, W and Y gauge tracksare not.

Material Properties

Comply with BS 7364: 1990. Hot dipped galvanised steel to BS EN 10143: 1993 and BS EN 10142:1990 + A1:1995 designation DX51D+ Z275 NA 0.

Cold rolled to BS 2994: 1987.

36 34

Width

30

Width

50

Width

6 6

Galvanised metal U shaped sectionused with Cormet C Studs to providemetal frame for plasterboard walllinings and partitions that require adeflection head allowance or exceed4.2m in height.

70

Width

Galvanised metal U shaped sectionused with Cormet C Studs to providemetal frame for plasterboard walllinings and partitions that require adeflection head allowance or exceed4.2m in height.

330



Cormet Acoustic Homespan SystemGalvanised metal sections to provide a metal frame for the Cormet Acoustic Homespan system.

All sections are 0.5mm gauge metal (Red [R] gauge).Acoustic Homespan Description Width (mm) Length (mm) Code referenceC Stud

44 2400 AHS44/R

50 2400 AHS50/R

Acoustic Homespan Description Width (mm) Length (mm) Code referenceStarter Stud

44 2400 CS44/R

50 2400 CS50/R

Acoustic Homespan Description Width (mm) Length (mm) Code referenceU Track

45 2400, 2700 UT45/R

52 3000 UT52/R

Acoustic Homespan Description Width (mm) Length (mm) Code referenceDeep Flange Track

45 2400 XDT45/R

52 3000 XDT52/B

Galvanised C shaped metal sectionused with Acoustic Homespan U Track to provide a metal frame forthe Acoustic Homespan System.

Acoustic Homespan Starter Studs areused at wall abutments and at dooropenings as part of the AcousticHomespan system.

Galvanised U Track is used withCormet Acoustic Homespan C Studsto provide a metal frame for theAcoustic Homespan System.

Acoustic Homespan Deep FlangeTrack is used as the floor track in theAcoustic Homespan system whenscrew fixings for the skirting boardsare required.

Cormet Metal SectionsI Stud Description Width (mm) Length (mm) Code reference

50 2400, 3000 IS50/R

60 3600, 4200 IS60/B

70 3600, 4200 IS70/B

90 6000, 7200 IS90/B

92 3600, 6000 IS92/W

Galvanised steel metal I shapedsection used with Cormet U track to provide a metal frame forplasterboard wall linings andpartitions.

40

Width

36 38

44

6 6

34 36

50

6 6

AHS44/R AHS50/R

36 38

width

26 30

45 52

UT45/R UT52/R

70

width



331

8

Cormet ShaftwallGalvanised metal sections used toprovide steel frame for the CormetShaftwall system.

All components are 0.7mm gauge (Blue [B] gauge)CH Stud Description Width (mm) Length (mm) Code reference

60 3000, 3600, 4800 CHS60/B

90 4800, 6600 CHS90/B

146 6000, 8000 CHS146/B

E Stud Description Width (mm) Length (mm) Code reference

60 3000, 3600, 4800 ES60/B

90 4800, 6600 ES90/B

146 6000, 8000 ES146/B

J Track Description Width (mm) Length (mm) Code reference

62 3000 JT62/B

92 3000 JT92/B

148 3000 JT148/B

Lightweight steel sections positionedat floor and soffit to guide CormetCH Studs.

Light weight non-loadbearing steelsections which are installed betweenLafarge Firecheck Coreboards andprovide the bearing surface to whichwallboard is applied.

Lightweight steel sections used forstarter studs, intersections, dooropenings and end studs.

Cormet Omega Acoustic StudsA unique omega shaped stud which,when used in a Cormet partitionsystem, gives up to 3 RwdB increasedacoustic insulation over standard70mm Cormet metal studs with thesame board linings.

All sections are 0.5mm gauge metal (Red [R] gauge).Acoustic Omega Stud Description Width (mm) Length (mm) Code reference

70 2400, 2700, 3000, 3600 AS70/R

90 3600, 3900, 4200 AS90/R

Galvanised omega shaped metalstuds used in the Omega AcousticPartition System.

34

6 6

36

Width

35

25widths

25

25widths

35

50

widths

25

332



Cormet Dryliner ComponentsDryliner Channel Description Dimensions (mm) Length (mm) Code reference

17 x 47 2400, 2700, 3000, 3600 RD1

Dryliner Channel Description Dimensions (mm) Code referenceConnector

100 x 47 x 16 RD3

Dryliner Track Description Dimensions (mm) Length (mm) Code reference

20 x 19 x 30 3000 RD9

Standard Reach Brackets Description Dimensions (mm) Cavity width (mm) Code reference

63 x 47 x 35 25-60 RD2

XR Bracket Description Dimensions (mm) Cavity width (mm) Code reference

133 x 47 x 35 25-130 RD11

Close Reach Bracket Description Dimensions (mm) Cavity width (mm) Code reference

10 x 30 x 40 20-25 RD7

Close Reach Pin Description Dimensions (mm) Code reference

10 x 40 RD8

Ceiling System Joist Description Dimensions (mm) Maximum Code referenceConnector cavity (mm)

47 x 100 65 RD5

47 x 180 120 RD10

Metal Furring Description Dimensions (mm) Length Code referenceWall Channel (mm)

40 x 10 2260 MFWC

A galvanised steel furring channelfor plasterboard fixing. It is used inthe Cormet Dryliner and Archlinersystems.

Galvanised metal J shaped sectionused as a track or perimeter channelin the Cormet Dryliner system.

A Galvanised steel section used tobrace RD1 Dryliner Channels tosubstrate in the Cormet DrylinerSystem.

A Galvanised steel section used tobrace RD1 Dryliner Channels tosubstrate in the Cormet DrylinerSystem.

A pin/plug used for fixing RD7 CloseReach Bracket onto the CormetDryliner System.

A galvanised steel bracket used inconjunction with RD8 Close Reach Pinto support RD1 Dryliner Channels inthe Cormet Dryliner System.

A Galvanised clip used to join RD1Dryliner Channels.

Galvanised steel pressed section usedto join RD1 Dryliner Channels totimber used in Dryliner CeilingSystem.

Galvanised steel pressed section usedin Cormet Metal Furring System.



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Cormet Suspended Ceiling ComponentsCeiling Channel Description Dimensions (mm) Length (mm) Code reference

102 x 25 3600 MFCC50

Primary Channel Description Dimensions (mm) Length (mm) Code reference

15 x 44 x 15 3600 MFCP44

Heavy Gauge Primary Description Dimensions (mm) Length (mm) Code reference

Channel

30 x 52 x 30 3000 UT52/Y

Edge Channel Description Dimensions (mm) Length (mm) Code reference

19 x 26 x 28 3600 MFCE26

Metal Angle Description Dimensions (mm) Thickness (mm) Length (mm) Code reference

30 x 23 0.8 3600 MFC2330

Strap Hanger Description Thickness (mm) Length (m) Code reference

0.55 25 MFCSTRAP

Connecting Clip Description Code reference

MFCCLIP

Soffit Cleat Description Code reference

MFCCLEAT

Ceiling Nut and Bolt Description Code reference

MFCNB

Galvanised steel channel used toform the Cormet Suspended Ceilingsystem.

Galvanised steel channel used tosupport the MFCC50 Ceiling Channelin the Cormet Suspended Ceilingsystem

Galvanised steel channel used toform heavy duty suspended ceilinggrids in place of MFCP44 PrimaryChannels.

Galvanised steel channel used toform the perimeter support of theCormet Suspended Ceiling system

Galvanised steel strip used as ahanger for the Cormet SuspendedCeiling system.

Galvanised steel clip for for joiningMFCC50 channels for the CormetSuspended Ceiling system.

Galvanised steel bracket used to fixangle brackets or MFCSTRAP tosubstrate for the Cormet SuspendedCeiling system.

Galvanised steel nut used to boltcleat to hangers in the CormetSuspended Ceiling system.

Galvanised steel section which canbe used in a variety of systems.

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Cormet Acoustic BracesPhonissimo Description Performance Code reference

PHONIMO

Phonistar Description Performance Code reference

PHONI

V Brace Description Performance Code reference

VBRACE

This product is an acoustic suspendedceiling hanger bracket for use with theCormet Suspended Ceiling system.

This product is a heavy duty acousticsuspended ceiling hanger bracket foruse with the Cormet SuspendedCeiling system.

The bracket is capable of supportingservices and a secondary ceiling.

A sound and vibration isolatingstrengthening brace for twin walls andpartitions.

Acoustic Isolation: + 5 RwdB between frequencies50 hertz to 125 hertz

Maximum strength: 500 N

Acoustic Isolation: + 10 dB at frequencies 50 hertzto 1000 hertz

Maximum load: 120kg

Maximum deflection: 6.5mm±15%

Fire safety: This product will not collapse if therubber isolator should burn out.

Acoustic Isolation: + 10 dB at frequencies 50 hertzto 500 hertz

Maximum load: 50kg

Maximum deflection: 3mm

Fire safety: This product will not collapse if therubber isolator should burn out.

Cormet Acoustic FloorAcoustic Floor Clip Description Dimensions (mm) Code reference

28 x 99 RAFC25

Resilient Tape Description Dimensions (mm) Length (m) Code reference

50 x 6 12 RAFT50

Resilient Bar Description Dimensions (mm) Length (mm) Code reference

87 x 17 3000 RBD3000

Cormet EncasementsCB Clip Description To fit flange size (mm) Thickness (mm) Code reference

7-17 0.55 CB17

17-27 0.55 CB27

27-40 0.55 CB40

Lightweight steel clips friction fittedto flanges of structural steelwork inthe Cormet Column and Beam ClipSystem. Used in conjunction withMFCE26 Cormet Edge Channel.

Metal clip used in the LafargeCormet Acoustic Floor system.

Self adhesive acoustic isolation tape.

Acoustic isolation bars.

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Cormet Systems: AccessoriesInsulation Hold Description Roll size (m) Code reference

30 INSR

Lafarge Intumescent Description Pack size Coverage Code referenceAcoustic Sealant (linear metres)

0.9 litres 25 ACOUSTIC (INTU)

0.38 litres 10.5 ACO 38 (INTU)

Movement Control Joint Description Length (mm) Code reference

3048 MCJ 3048

Staggered Stud Clip Description Dimensions (mm) Code reference

12 x 27.5 x 38 ISC10

Fixing channel Description Dimensions (mm) Thickness (mm) Length (mm) Code reference

99 0.9 2400 MFIX

Flat Strap Description Dimensions (mm) Thickness (mm) Length (mm) Code reference

50 0.55 2400 FS50/R

90 0.8 2400 FS90/W

Metal Angle Description Dimensions (mm) Thickness (mm) Length (mm) Code reference Angle

30 x 23 0.8 3600 MFC2330 90°

25 x 25 0.8 3600 MFC2525 90°

25 x 50 0.8 3600 MFC2550 90°

50 x 50 0.8 3600 MFC135 135°

Deflection Head Bracket Description Width (mm) Thickness (mm) Depth x length (mm) Code reference

70 0.7 25 x 25 DHB70S

90 0.7 25 x 25 DHB90S

146 0.7 25 x 25 DHB146S

100 1.0 50 x 54 DHB100L

150 1.0 50 x 54 DHB150L

200 1.0 50 x 54 DHB200L

Galvanised metal channel used inlinings and partitions to providesupport for plasterboard joints andheavy fixtures.

Also provides a fire stop.

Galvanised metal flat strap used inlinings and partitions to providesupport for plasterboard joints.

Also provides a fire stop.

A spacing clip for use in Lafargepartitions with staggered I studs.

Metal supports used with timber andmetal framing to hold mineral woolinsulation.

Lafarge Intumescent Acoustic sealantis an acrylic emulsion containinginert fillers and fungicide that willintumesce when exposed to fire.Designed to be used to fill air gapsto stop sound transmission throughDrywall. Can be used to seal gapsbetween floors and skirtings oraround doors or window frames.

Metal sections fixed between boardsto control movement of up to 10mm.

Galvanised steel section which canbe used in a variety of systems.

Splayed (135°) corner support angle.

Galvanised steel bracket used indeflection head detail to secure thehead of a C Stud and prevent ittwisting.

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Tape-Ons, Metal Beads and TapesLafarge Tape-On beads are papertape reinforced with galvanisedmetal for protection of externalcorners and board edges. Used fortaping and jointing.Corner 90º External Description Length (mm) Code reference

2400, 3000 90EXT

Stop Beads Description Size (mm) Length (mm) Code reference

9.5 3000 95STOP

12.5 3000 125STOP

Joint Tape Description Length (m) Code reference

150 JOINT

Patching Tape Description Length (m) Code reference

90 PATCH

Flex Tape Description Length (m) Code reference

10 FLEX

Duo Bead Description Length (mm) Code reference

2400 BEAD DUO8

3000 BEAD DUO10

Edging Bead Description Size (mm) Length (mm) Code reference

9.5 3000 BEAD EDGE95

12.5 3000 BEAD EDGE125

Galvanised steel angle bead with3mm nose for drywall cornerreinforcement.

Galvanised steel angle bead gives aneat edge to plasterboard.Perforated to provide a bed forjointing compound.

Wax coated pre-formed 90º cornerprotection.

Wax coated pre-formed drywallstop bead.

Cross fibre tape with heat bondedzinc coated steel strips for theprotection of irregular externalcorner angles or difficult situationswhere rigid angle beads are notsuitable. Used for taping and jointing.

Self adhesive tape for patchingplasterboard.

White perforated cross fibre tapefor reinforcing plasterboard joints.Suitable for hand or mechanicalapplication with Lafarge jointingcompounds.

Cormet Systems: Accessories (continued)Flex Track Description Dimensions (mm) Thickness (mm) Length (mm) Code reference

30x23 0.7 3000 MFLEX

Grommets Description Bag size Code reference

100 HRG25

Galvanised steel section designed toallow the easy construction of curvedpartitions.

25mm rubber grommet.

CovesLafarge Coving is a simple and costeffective way of adding attractiveand distinctive features to the walland ceiling junction. Designed forinternal use Lafarge Cove cancomplement many room styles.Lafarge Cove Description Size Length (mm) Code reference

90mm 3000, 3600 COVE90

120mm 3000, 3600, 4200 COVE120

Lafarge Predeco Cove Description Size Length (mm) Code reference

120mm 3000 PDCOVE120


P R O D U C T S P E C I F I C A T I O NLAFARGE COVE

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Lafarge Cove as detailed above withthe additional benefit of the LafargeDeco pre-sealed surface.

Lafarge Cove is made from plasterencased in a strong paper liner. The square back profile and puregypsum core provide high strengthand rigidity.

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Lafarge Shadowline ProfilesShadowline Uplighter Description Dimensions (mm) Length (mm) Code reference

128 x 121.5 3000 SUS4

Uplighter Support Bracket Description Base (mm) Code reference

104 USB1

Shadowline Reveal Description Dimensions (mm) Length (mm) Code reference

12.5 3000 SWR125

25.0 3000 SWR25

Shadowline Hanging Reveal Description Dimensions (mm) Length (mm) Code reference

12.5 3000 SHR125

Shadowline Picture Hanger Description Code reference

SPH1

Shadowline Corner Step Description Dimensions (mm) Length (mm) Code reference

12.5 (double) 3000 SCS2

12.5 x 8.5 (quad) 3000 SCS4

Shadowline Skirting Description Dimensions (mm) Length (mm) Code reference

104 3000 SWB105

Shadowline Trim Reveal Description Dimensions (mm) Length (mm) Code reference

12.5 3000 STR125

25.0 3000 STR25

Shadowline Z Step Description Dimensions (mm) Length (mm) Code reference

12.5 3000 SWZ125

25.0 3000 SWZ25

Crisp stepped extrusion toincorporate linear lighting.

Provides a means of relievingruns of drywall with recessedaccent lines.

Incorporates a concealed trackfor picture and other lightweighthangings.

Allows complex corner details tobe incorporated into wall angles,ceilings, soffits and columns.

Provides a high strength rebatedskirting to the foot of apartition.

Allows the drywall linings to beeasily raised or recessed.

Enables neat architrave details tobe created around door frames,skirtings and at partitionjunctions.

Support bracket for ShadowlineUplighter.

For use with ShadowlineHanging Reveal.

Lafarge Shadowline Profiles (continued)Shadowline Edge Trim Description Dimensions (mm) Length (mm) Code reference

12.5 3000 ST125

25.0 3000 ST25

Shadowline Flex Trim Description Dimensions (mm) Length (mm) Code reference

12.5 3000 STF125

25.0 3000 STF25


P R O D U C T S P E C I F I C A T I O NLAFARGE PROFILES

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Allows raised or recessed panelsor opening in walls to beconstructed with curved edges.

Sharp 90° aluminium extrusioninstalled against cut edges ofplasterboard.

Lafarge Softform ProfilesSoftform Uplighter Description Dimensions (mm) Length (mm) Code reference

128 x 121.5 3000 SU52

Uplighter Support Bracket Description Base (mm) Code reference

104 USB1

Softform Bullnose Description Dimensions (mm) Length (mm) Code reference

41.0 3000 SB75

52.0 3000 SB95

Outside Corner 90º Description Dimensions (mm) Length (mm) Code reference

64.0 3000 SO64

75.0 3000 SO76

Inside Corner 90º Description Dimensions (mm) Length (mm) Code reference

64.0 3000 SI64

75.0 3000 SI76

Curved casing to incorporate linearlighting.

Creates a smooth round finish to apartition end and projectingbulkhead.

Allows partitions and wall linings tobe constructed with 90° corners. Noadditional impact protection isrequired.

Allows partitions and wall linings tobe constructed with 90° corners. Noadditional impact protection isrequired.

For use in conjunction with theSoftform Uplighter.

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Case study

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