Ceramic Fixing Instructions
Fixing instructions for Ceramic Tiles on to Suspended Timber Floor with Electric wire under floor heating
1 Ensure that Joists, floor boards, Waterproof ply, Tongue and grove etc are stable without excessive movement, screwed down, dust free and dry.
2 Cut Ditra matting to fit area then fix using Ditra Adhesive. Ensure sheets are overlapped and a kerdi matting skirting is used if the area is to be water proof.
3 Apply single part rapid flex white adhesive to the Ditra matting to create a level screed 2mm above the Ditra matting. Allow to dry
4 Fix the under floor heating as per manufacturers instructions & test. Ensure that none of the heating elements are in contact with matting.
5 Fix the Tiles with a minimum 2 mm joint using single part rapid flex white adhesive using a notched trowel to create a 4 mm bed again ensure that none of the heating elements are in contact with the tile. Allow to dry
6 Grout using a flexible floor grout
7 Clean and set up a regular maintenance programme.
8 Do not switch on the under floor heating on for at least 2 weeks and then only increase the temperature above room temperature by 2 degree increments per day until the desired temperature has been achieved.
Fixing instructions for Suspended timber floors or floors where there is a mix of substrates, cracked old screed, green screed or water pipe underfloor heating systems
As above omit points 3 & 4 ie creating a screed etc, apply adhesive to the matting using a notched trowel and fix tile immediately to create a 3 mm bed above the matting. Follow points 6,7,8 & 9.
Many fixers prefer fix Ceramic Tiles to a tile backer board or a minimum of 18 mm of water proof plywood which is fine, although we do recommend the use of Ditra matting.
Fixing instructions for Screeded Floors with/without under floor heating
As above omit points 1,2,3 & 4 i.e. creating a screed etc. apply adhesive direct to a primed screed using a notched trowel and fix tile immediately to create a 3 mm bed. Follow points 6,7 & 8
N.B. New Screeds should dry out or cure before tiles can be laid; industry recommendation is 25 mm per week, otherwise use ditra matting as above.
Fixing instructions for walls areas ie plaster/plasterboard, ply, backer board & render
As above omit points1,2,3 & 4 apply adhesive, one can use a Waterproof Tile Adhesive instead of SP Rapid Fix, direct to a primed surface using a notched trowel and fix tile immediately to create a 3 mm bed. Follow points 6,7 & 8
** ALWAYS ADHERE TO MANUFACTURERS INSTRUCTIONS WHEN USING ANY TILES OR TILING PRODUCTS**