GENERAL SPECIFICATION FOR WATERPROOFING AND FIXING GLAZED CERAMIC OR PORCELAIN TILES ONTO RENDERED WALLS AND GLAZED CERAMIC OR PORCELAIN MOSAICS ONTO THE SCREEDED FLOOR IN A SHOWER

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.

   

TAL PRODUCT REQUIREMENTS

The TAL products required for this installation are as follows :

Waterproofing Installation

TAL FLOOR PRIMER / TAL FLOORKEY
TAL SUPERFLEX
TAL SUPERFLEX MEMBRANE

Tile Installation
TAL GOLDSTAR 6 – Ceramic and Porcelain Tiles / Mosaics – grey finish
TAL MARBLEFIX – Mosaics – off-white finish
TAL BOND / TAL BOND POWDER
TAL WALL & FLOOR GROUT
NOTCHED FLOOR TROWEL
SPACERS

 

Special note must be taken of the following:

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 a suitable resilient 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.)  

Mosaics :

Mosaics are available in glazed and unglazed ceramic, porcelain, natural stone and glass, in a variety of shapes and sizes.  To facilitate ease of handling, mosaics are assembled as sheets, the individual tessera being glued either face-down onto paper or plastic (paper-faced mosaics), or bed side down onto a synthetic mesh backing, fabric, or onto small tabs.  Paper-faced mosaics are preferable since they allow full contact to be achieved with the adhesive bedding.

When sheets are assembled by means of a backing mesh, the mesh should be made of water-resistant synthetic fabric such as nylon, and not from cotton or paper.

In the case of a mosaic that has been assembled with a fabric backing or tabs, the following is critical for a successful installation:

Furthermore:

 

Note : This installation must be allowed to set sufficiently (minimum 5 days) before being subjected to service conditions.

Should you require any further assistance or have any queries regarding the above, please do not hesitate to contact us.  Assuring you of our best attention at all times.

 

Yours sincerely,  

 

SHARON MARGON

TECHNICAL ADVICE SUPERVISOR

 ©TAL 1972 & 1984

 

 

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