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Tiling of Ceramic Wall Tile onto Rendered Wall

Common problem involved when fixing ceramic wall tiles at jobsite. The solution explains & shows the correct practice & application method when fixing tiles in this situation.

Problem

Substrate Preparation

  • Render are only let to cure for just 2-3 days only. 
  • Tiling onto substrate that is not fully cured  is tiling onto unstable substrate  with potential movement

Fixing material

  • Use of neat cement  or pure OPC cement only when fixing ceramic tile.
  • The traditional specification allows the use of cement sand mix
  • The local aplication practices is to use just  neat OPC cement
  • Using  OPC Cement will expose the installation with high Shrinkage factor 

Shrinkage

  • Use of neat cement  or pure OPC cement exposed the installation with high Shrinkage factor .
  • The high shrinkage factor will have effect such as tile crazing.

Application method

  • Poor chemical property & workability of the cement mix, only allow the application of  buttering system.
  • Buttering system is slow in productivity & expose the installation with void areas

Tile preparation method

  • Need to soak tile in water for at least 24 hours when fixing  using  neat cement
  • The tile will  sometimes soaked in dirty  water &  together with the tile boxes.
  • This will cause problems such as color shading of the tile

Solution

1. Check the screeded floor condition ie. well age, no cracks, no hollow sound.

 

 

2. Dampen the screeded floor  to reduce water suction

 

 

3. Mix Belcem CTF Grey + Clean water (if fixing high water absortion tile ie ceramic wall & floor tile)

 

 

4. Trowel the adhesive at thickness of 6-12mm depending on the size of tile being  installed

 

 

5. Lay and tamp the tile into position & finish level

 

 

6. Allocate suitable joint width with minimum joint 3mm

 

7. Let the tile adhesive cure for at least 24 hour

 

 



8. Apply the suitable color grout 

Solution with the following weber products

Solution 1

weberset CTF grey

Ceramic tile adhesive for interior wall and floor

Solution 2

BELCEM FINE GROUT

Multi colored, water resistant, compressible cement based fine grout

Solution 3

webermix admix I

High Solid content, Water based emulsion polymer admixture for use with Belcem Cement based tile adhesive

webermix admix plus

High performance, Water based emulsion polymer admixture for use with Belcem Cement based tile adhesive

BELBOND SBR

High Solid content, Multi purpose Styrene Butadiene Polymer for a variety building application