Tiling on first floor

Better option would be to prep the floor with hardie backer board glued and screwed every 150 mm Ditra is a good product but better suited for screed substrate’s

As said above Ditra matting is not the right product for what you are wanting to do , New build properties usually use floor grades 'chipboard' that you cannot tile onto directly, if you have ever seen kitchen units expand when wet , this is what will happen to your floor . The water in the adhesive has to go somewhere. I personally use a product called no more ply , a cement based backer board that you glue and screw at 300mm centres, You will also need a cement based flexible adhesive, I always use mapei keraquick or ultraflex s2 light . If your house was built by avant or Taylor whimpy then I would use ultraflex s2 . Hope this helps , good luck Dave

If the floor is osb or chipboard, I would use bal board (easy to work)6mm thickness. Install it following the instructions which is adhesive, screw it and tape it. Installation is in a brick pattern (don’t match corners). I would wait 12 hrs to tile and remember to prime (N0 pva) prior tiling, same prior installing the boards. All the best. Om

Hi Regarding going forward on the tiling ditra matting will be perfect as long as the ply is marine ply at least 12mm thickness and screwed at least every 150mm make sure you use a good adhesive such as Bal PTB fibre plus adhesive and Bal micromax flexible grout, hope this helps..