GENERAL SPECIFICATION FOR FIXING GLAZED CERAMIC FLOOR TILES OR PORCELAIN TILES ONTO A SUSPENDED WOODEN FLOOR  

 

Please note that ‘general’ specifications are issued for information purposes, and should not be used as project specifications.

As each and every project needs to be assessed individually on its own merits and characteristics please contact the TAL Technical Advice Centre for a project-specific detailed materials and methods specification for specific projects.

 

It is important that the tile selected is suitable for the application, preferably against a written Supplier’s specification.  Factors such as water absorption, irreversible moisture expansion, MOR and PEI ratings, chemical resistance and overall stability of the product need to meet the requirements of the service conditions.  

The backs of all tiles must be clean and free from dust and contaminants.  

 

Please note that any “wet” areas, such as showers or balconies, should be waterproofed using TAL SUPERFLEX I or TAL SUREPROOF waterproofing compounds prior to commencing tiling.  Please feel free to contact us for a specification for waterproofing and tiling these areas, as well as for technical literature on any of our products.  

 

TAL PRODUCT REQUIREMENTS

The TAL products required for this installation are as follows:

TAL SUPERPRIME

TAL KEYCOAT

TAL GOLDSTAR 6

TAL BOND / TAL BOND POWDER

TAL WALL & FLOOR GROUT

NOTCHED FLOOR TROWEL

SPACERS

TAL SEALMASTER CORD

TAL GOLDSTAR SEALMASTER 1000

 

Special note must be taken of the following:

Suspended Wooden Floors:

The following is an extract from SANS 10107 : 2011, Code of Practice for the Design & Installation for Ceramic Tiling:

"An important consideration with this type of background is that the sheets or boards shall be adequately braced to provide a rigid surface, free from any springiness and surface undulations.  They shall also not undergo any distortion during and after completion of the tiling."

Wood exhibits various types of movement, making it one of the most difficult substrates on which to tile. Latex modified adhesives will allow for lateral and horizontal movement in the floor, but the tile itself remains a rigid material and excessive vertical deflection movement in the background could result in an installation failure, ie tiles cracking or coming loose, or both. 

Only exterior grade board should be used externally or in ‘wet’ applications.

 

Adhesive System:

We have specified the use of TAL GOLDSTAR 6 rapid setting high strength adhesive for the installation of these tiles.  However, if timing on this project allows for a quick setting adhesive option, then TAL GOLDSTAR 12 can be considered.     

The advantages of using TAL GOLDSTAR 12 are as follows :

It is however important that newly installed tiles are protected from traffic (other trades, etc.) for a minimum of 12 hours, while the adhesive sets.   This is especially important in fast-track installations.

 

Tile Panel Movement Joints & Perimeter Joints:

It should be noted that the lack of movement joints in a tile panel, or poorly constructed joints,  is a major cause of tile failure.  Joints must be created at the required spacing and must be well raked out to remove all traces of adhesive residues, debris, contamination, etc, ie the joint must extend through the tile and tile adhesive layers. These joints must be filled with TAL GOLDSTAR SEALMASTER 1000 Polyurethane Joint Sealant (and suitable backing cord where applicable) in accordance with the manufacturer’s instructions.

(See later detail of correctly constructed tile panel movement joint and perimeter joint.)

 



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