perforations · rg 2516 n round perforation, 90° straight pitch n hole diameter: 2.5 mm n free...

PERFORATIONSIntelligent sound control

Light reflectance [%]Comparitive measurements with coated white RAL 9010 ceiling tiles, including black acoustic fleece on rear side.

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Metal ceilings combine smart soundproofing with an attractive indoor environment. Armstrong Metal Perforations offer a wide range of design options and effective acoustic comfort.

Reverberation timeIt’s important to optimise a room’s reverberation time, according to how it is used – the reverberation depends on the available space and total absorption.

Sound absorptionOne of the key functions of a metal ceiling is to create a pleasant atmosphere enhanced by intelligent noise abatement. Armstrong perforations offer a vast spectrum of aesthetic solutions for effective acoustic comfort. Depending on the intended purpose of a room, reverberation times will need to be optimised as well. This parameter depends on the total absorption capacity of the room. Airborne sound absorption is based on the conversion of sound energy into heat by friction processes which take place in absorbing materials and systems.

Perforation and light reflectance

Measured in accordance with EN ISO 7742-2 & EN ISO 7742-3

The brighter the ceiling surface, the better the light reflectance.Thus a surface with fewer perforations has a higher light reflectance.For example, the Ultra Microperforation Rg 0501, with just a 0.64% perforation level, reflects significantly more light than other variants.

Armstrong perforation description The following product prefixes describe the shape and arrangement of perforations:Rd = Round perforations, 45° diagonal pitchRg = Round perforations, 90° straight pitchRv = Round perforations, various angles pitchesQg = Square perforations, 90° straight pitchQd = Square perforations, 45° diagonal pitchTv = Diamond perforations, various angles pitchesLg = Slotted perforations, 90° straight pitchLv = Slotted perforations, various angles pitches

The numbers define the perforation size and free area. The first two, and occasionally three, numbers denote the hole diameter in tenths of millimetres and the last two digits the proportion of free cross-sectional area.

Example:Rg 2516n Round perforation,

90° straight pitchn Hole diameter:

2.5 mmn Free area: 16%

Manufacturing accreditationIn our manufacturing operations, not only do we continue to take care in the selection of raw materials and energy, reduce waste and embrace effective recycling methods, but we also ensure that our products conform to safety, environmental and quality standards.Our European manufacturing plants are certified to:ISO 9001:2008ISO 14001:2004OHSAS 18001:2007

Memberships and associationsArmstrong is a member of TAIM (Technical Association of Industrial Metal Ceilings).TAIM was founded in 1988 and its primary objective is to promote quality and to set minimum quality standards and requirements for metal ceilings systems.

HOW TO CHOOSE THE RIGHT PERFORATION ?

100

90

80

70

60

50Unperforated

(plain) free area: 0%

Rg 0501Ultra

Microperforationfree area: 0.64%

Rg 0701Extra

Microperforationfree area: 1.5%

Rg 2516Standard

Perforationfree area: 16%

Rd 1522Micro Perforation

free area: 22%

85% 84% 80%

65% 70%

Ultra Microperforation - Rg 0501 Extra Microperforation - Rg 0701

Hole diameter: 1.5 mm

Free area: 22 %


Free area: 0.64%


Free area: 1.5 %

Armstrong metal ceilings with the revolutionary Ultra Microperforation have set new standards. No additional acoustic infills are needed to absorb sound waves; the Armstrong metal ceiling achieves the necessary sound absorption using near-invisible 0.5mm perforations.

Armstrong has a wide range of standard perforation products, with special variants also available. Since the maximum continuity and perforation can vary according to the tool, not all perforations are available in all widths. For further details, please contact us.

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Micro Perforation - Rd 1522 Standard Perforation - Rg 2516


Free area: 16 %

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0125 250 500 1000 2000 4000Hz

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0125 250 500 1000 2000 4000Hz

• Ultra Microperforated no infill

• Microperforated with fleece

• Microperforated with B15

• Microperforated with OP19

• Extra Microperforated with fleece

• Extra Microperforated with B15

• Extra Microperforated with OP19

• Standard Perforated with fleece

• Standard Perforated with B15

• Standard Perforated with 0P19

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0125 250 500 1000 2000 4000Hz

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0125 250 500 1000 2000 4000Hz

aW NRC 125 250 500 1000 2000 4000 Hz Abs Class Cert N° Dncw Cert N° Rw Cert N° Ultra Microperforated - no infill • 0.40(LM) 0.55 0.35 0.65 0.65 0.40 0.35 0.25 aP D 2252 18 dB 3844-98-1 - -

Extra Microperforated with fleece • 0.55(L) 0.65 0.40 0.80 0.70 0.55 0.55 0.45 aP D 2253 30 dB 2432 - - Extra Microperforated with B15 • 0.65 0.60 0.30 0.45 0.50 0.70 0.75 0.75 aP C 2334 40 dB 2427 - - Extra Microperforated with OP19 • 0.70 0.75 0.50 0.70 0.80 0.75 0.70 0.50 aP C 6714a 31 dB 6720a 15 dB 6725a Microperforated with fleece • 0.75 0.80 0.30 0.80 0.95 0.65 0.75 0.80 aP C 2175 20 dB 2437 6 dB 5939 Microperforated with B15 • 0.60(H) 0.60 0.35 0.40 0.50 0.65 0.75 0.90 aP C 2337 41 dB 2443 18 dB 5941 Microperforated with OP19 • 1.00 0.90 0.50 0.80 0.95 0.95 1.00 1.00 aP A 6713a 27 dB 6719a 12 dB 6724a Standard Perforated with fleece • 0.75 0.75 0.35 0.80 0.65 0.70 0.75 0.70 aP C 141401 20 dB 2437* 6 dB 5939* Standard Perforated with B15 • 0.60(H) 0.60 0.35 0.40 0.50 0.65 0.75 0.90 aP C 2340 41 dB 2443* 18 dB 5941* Standard Perforated with 0P19 • 0.95 0.90 0.50 0.80 0.95 0.90 1.00 0.95 aP A 6715a 28 dB 6721a 13 dB 6726a

Sound absorption

Sound attenuation

Sound reduction

* Highlighted Dncw and Rw performances for the Standard Perforation (16% open area) are estimated as being not less than the tested Microperforated (22% open area) performance.All Armstrong acoustic testing is conducted at independent third party accredited laboratories.

STANDARD PERFORATIONS

SEMI STANDARD PERFORATIONS

Rd 1506Hole diameter: 1.5 mmFree area: 6 %










4.3

4.3

Ø1.6

Rd 3025Hole diameter: 3.0 mFree area: 25 %






Rg 1511Hole diameter: 1.5 mmFree area: 11 %

Rd - Round perforations, 45° diagonal pitch

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Rg - Round perforations, 90° straight pitch


Rg - Round perforations, 90° straight pitch Rv - Round perforations, various angles pitches

8 :::: :::: 98 ::::





Rg 14023Hole diameter: 14 mmFree area: 23 %

Rg 25020*Hole diameter: 25 mmFree area: 20 %

Rv 1517Hole diameter: 1.5 mmFree area: 17 %









50

50Ø25


*Rg 25020 is not to scale.


Qg - Square perforations, 90° straight pitch Qg - Square perforations, 90° straight pitch / Qd - Square perforations, 45° diagonal pitch

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Qg 10059Hole diameter: 10 x 10 mmFree area: 59 %

Qg 10565Hole diameter: 10.5 x 10.5 mmFree area: 65 %

Qg 12515Hole diameter: 12.5 x 12.5mmFree area: 15 %


Qd 20034Hole diameter: 20 x 20 mmFree area: 34 %




Tv 26845Hole diameter: 26.8 x 9 mmFree area: 45 %


4 8 12.2

13.04

32

47

20.45

3 26.8

14.7

27.

369

t = min. 25

32

47 47

23.5

13.0

4

13

13

26.08

26.0

8

4

8 12.2

Tv - Diamond perforations, various angles pitches

Perforation description

Max. perforation width (mm)

Max. opening width (mm)

Material thickness (mm)

Steel AluminiumRd 1511 1,258 1,280 0.5 - 0.7 0.6 - 0.8

Rd 15221,595.5 1,600 0.5 - 0.7 0.6 - 0.81,551.5 1,600 1.0 - 1.25 1.0 - 1.25

Rd 1622 820 830 0.5 - 0.7 --Rd 1506 1,595.5 1,600 0.5 - 0.7 0.6 - 0.8Rd 1810 815 820 0.5 - 0.7 0.6 -0.8Rd 1820 675 750 0.5 - 0.6 --Rd 2228 1,497.2 1,600 0.5 - 1.0 0.6 -1.0Rd 2508 1,509.5 1,600 0.5 - 1.0 0.6 -1.2Rd 2535 1,274.5 1,280 0.5 - 0.7 0.6 -0.8Rd 3013 621 745 0.5 - 1.0 0.6 -1.0Rd 3019 708 770 0.5 - 0.9 0.6 -1.0Rd 3025 708 770 0.5 - 0.9 0.6 -1.0Rd 3139 901.41 950 0.5 - 0.7 0.6 -0.8Rd 4006 704 770 0.5 - 0.9 0.6 -1.0Rd 4011 611.5 745 0.5 - 1.0 0.6 -1.0Rd 4015 702 735 0.5 - 0.6 --Rd 4045 815 820 0.5 - 0.6 --Rg 0501 625.5 745 0.5 --Rg 0701 1,500 1,600 0.5 - 0.7 0.6 - 0.7

Rg 15111,593.5 1,600 0.5 - 0.7 0.6 - 0.81,549.5 1,600 1.0 - 1.25 1.0 - 1.25

Rg 1821 815 820 0.5 - 0.7 0.6 -0.8Rg 2516 1,509.5 1,600 0.5 - 1.0 0.6 -1.2Rg 2504 1,498.5 1,600 0.5 - 1.0 0.6 -1.2

Rg 3013708 770 0.5 - 0.9 0.6 -1.0615 745 0.5 - 1.0 0.6 -1.0

Rg 3027 616.5 745 0.5 - 1.0 0.6 -1.0Rg 3529 1,575.3 1,600 0.5 - 1.0 0.6 -2.0Rg 4022 611.5 745 0.5 - 1.0 0.6 -1.0Rg 4030 702 735 0.5 - 0.6 --Rg 4007 702 735 0.5 - 0.6 --Rg 14023 638 745 0.5 - 1.0 0.6 -1.0Rg 25020 575 745 0.5 - 1.0 --

Rv 1517 1,510.25 1,600 0.5 - 0.75 --Rv 2523 1,252.5 1,280 0.5 - 0.9 0.6 -1.0Rv 2532 1,590 1,600 0.5 - 0.75 0.6 -1.2Rv 2919 686 740 0.5 - 0.6 --Rv 4058 775 1,010 0.6 - 0.8 --Rv 4625 949.6 1,080 0.5 - 0.7 0.6 -1.0Rv 5036 483 535 0.5 - 0.6 --Qg 3056 699 1,280 0.5 - 0.7 --Qg 4025 708 770 0.5 - 0.7 0.6 -0.8Qg 8043 642.4 745 0.5 - 1.0 0.6 -1.0

Qg 10059647 745 0.5 - 0.8 --713 745 0.5 - 0.6 --

Qg 10015 713 745 0.5 - 0.6 --Qg 10565 647 745 0.5 - 0.8 --Qg 12515 1,004.5 1,280 0.5 - 0.7 0.6 -0.8Qg 20018 631 745 0.5 - 0.8 0.6 -0.8Qd 20034 631 745 0.5 - 0.8 0.6 -0.8Lg 16032 775 790 0.5 - 0.6 --Lg 25042 619 745 0.5 - 0.8 0.6 -0.8Lg 42003 1,001 1,100 0.5 - 0.8 0.6 -0.8

SonoPerf D® 950 950 0.6 - 0.7 --Lv 27045 850.5 855 0.5 - 0.7 --Tv 26845 803.7 1,010 0.6 - 0.7 --

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Lg - Slotted perforations, square pitch

12 ::::

Lg 16032Hole diameter: 16 x 2 mmFree area: 32 %



Lv 27045Hole diameter: 3.18 x 26.99 mmFree area: 45 %

42

37

a

2


20 16

2

5

25a

53

26.99

33.34

5.56 3.18

SonoPerf D®Hole diameter: 3 x 0.3 mmFree area: 10 %

6.2

0.3 3

3

Lv - Slotted perforations, various angles pitches

PAS

110

5 -

02/2

017

- A

rmst

rong

Bui

ldin

g P

rodu

cts

- R

CS

Bes

anço

n B

784

131

575

Prin

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on fr

ee c

hlor

ine

pape

r.

WESTERN EUROPEBelgium & LuxembourgArmstrong Building Products B.V.Postbus 38034800 DV BredaNetherlandsTel.: +32 02 223 00 72Fax: +31 (0) 76 521 04 07e-mail: [email protected]

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perforations · rg 2516 n round perforation, 90° straight pitch n hole diameter: 2.5 mm n free...

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