cov 09 how to avoid failure c
Post on 20-Oct-2014
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How to avoid common failures in ceramic tile installationsTRANSCRIPT
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How to Avoid FailuresDavid M. Gobis CTC CSI
©2009
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Coverings is a Registered Provider with The American Institute of Architects Continuing Education Systems. Credit earned on completion of this program will be reported to CES Records for AIA members. Certificates of Completion for non-AIA members are available on request.
This program is registered with the AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.
Learning Objectives• All tile and setting material is not created
equal. Are yours up to the task?
• Tile Industry and substrate trades guidelines, valuable resouces.
• Is your available labor qualified to do the job?
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Material Selection
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It is all about•Planning•Selection
• Execution
Planning
The right materials for the application
The right method for the application
The right labor skills for the job
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Proper Planning is About
This Not this
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Most Common Complaints
• Movement Joints
• Substrates
• Waterproofing
• Large Tile
• Thinsets7
Substrate Issues
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Appropriate SubstrateConcrete
American Concrete Institute
• ACI 302.2R-21• CHAPTER 5—FLOOR COVERING
AND ADHESIVE MANUFACTURER’S RECOMMENDATIONS
• 5.1—Introduction
The architect and engineer should communicate to ensure that the requirements for floor coverings in Division 9 of Construction Specifications Institute (2000) specifications are compatible with Division 3 requirements for concrete in the same specification
Tile Council of North America
American National Standards
• F-113
slab to be well cured, dimensionally stable, and free of cracks, waxy or oily films, and curing compounds.
• ANSI A108.01• 3.1.2.1• Do not use liquid curing compounds or
other coatings that may prevent bonding of tile setting materials to slabs. Use control joints through the slab and tile finish as specified or where cracks are anticipated.”
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Substrate Preparation
Clean Bondable
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Proper Substrate Preparation
YES ! NO !!!!!
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Wood Substrates
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Appropriate SubstrateWood
Engineered Wood Assoc. Tile Industry• maximum variation in plywood
surface shall not exceed 1/4" in10'-0" and 1/16" in 1'-0" from the required plane. Adjacent edges of plywood sheets—max. 1/32" above or below each other.
• floor systems, including the framing system and subfloor panels, over which tile will be installed shall be in conformance with the IRC
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www.apawood.org
Large Tile
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Big Tile and Patterns
Consider 1/3 offset with 12x24 tile
Make sure modular patterns fit
To minimize any natural warpage
This recent Standards revision now includes a category for Rectified Tile
Lippage Allowances (minus warpage)
Tile Type Tile Size Grout Joint Width Allowable
Glazed wall/Mosaics 1” x 1” to 6”x6” 1/8” or less 1/32”
Quarry 6” x 6” to 8”x8” 1/4“ or greater 1/16”
Paver (porcelain) All 1/8” to 1/4“ 1/32”
Paver (porcelain) All 1/4“ or greater 1/16”
1/32” of an inch is .0312 or about the thickness of a credit card1/16” of an inch is .0625 or about the thickness of a penny
Lighting
Critical Lighting Effects
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Planning for Waterproofing
The right materials for the application
The right method for the application
The right labor skills for the job
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Appropriate Design
3 Years Old 2 Years Old
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Appropriate Design
One Year Old
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Appropriate Design
And Even More Bad Ideas
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Appropriate Design
Showers Need Effective Waterproofing
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Board set on tub
DoorNail
Waterproofing
Appropriate Design
Plumbing code may be insufficient to protect the structure
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Appropriate DesignConsider waterproofing the entire area at the surface
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Enhanced?
Thinsets
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Mortar / Dry-Set / Thin-setConfusing Terminology
• ANSI 118.1 Dry-Portland Cement (Un-modified Thin-set)
• ANSI 118.4 Latex or Polymer-Portland Cement Mortar (Modified Thin-set)– Wall Tile Thin-set Mortar (Non-Sag Mortar)– Crack Prevention Mortar (Flexible Thin-set)– Complete Contact Mortar (No Back Buttering over flat
surfaces)– Rapid Setting Mortar (allows grouting and foot traffic
faster)– Medium Bed Mortars (Apply up to ¾” without excess
shinkage )
– ANSI 118.11 EGP Latex Mortar (Thin-set Over Plywood)
Get Specific Recommendations for Glass Tile
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Not All Thinsets Suitable for Exterior Use
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Ceramic Tile is NOT Structural
Always make surethe method used for
installation provides at
least 80% coverage
equally distributed, 95%
in wet areas or exterior
applications.
Dots Don’t Work!
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Ridges, Exterior Deck, Freeze/Thaw
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Movement Joints
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Always Provide Movement Joints
• interior — 20’ to 25' in each direction.
• exterior — 8' to 12' in each direction.
• interior tilework exposed to direct sunlight or moisture — 8’ to 12'
• where tilework abuts restraining surfaces
• same as grout joint, but not less than 1/4".
Incorporated into Every Job
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Recent Job
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The Question is NOT Will There be Movement
It Is How Much
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