V small ensuite floor prep

[samwich]

Hi there, wonder if you can help - a mate wants his 2.5 metres squared ensuite floor in his newbuild house tiling as cheap as possible. I've only tiled onto concrete so far and looked at the floor and it's flat, hard, v sturdy and I'm not sure what it is!Chipboard, plywood?My question is, can I just use flexi adhesive and maybe screw a few more nails in as he doesn't want to pay much and even if I added 6mm hardibacker the floor would raise higher than the door which couldn't be planed as it's hollow and he'd have to get another?
many thanks

 

[DHTiling]

hi samwich..

If the floor is solid and fixed well......then you can use BAL fastflex...and grout with BAL wide joint grout and GT1 admix......but i prefer to overboard..just to make sure......good luck and let us know how you get on...and maybe some pics eh.?..

 

[grumpygrouter]

Dave is the man to listen to, as always. You might be better screwing screws in and not nails though. Unusual technique that!

Grumpy

 

[samwich]

YEs, thanks for that!Wrote the thread fast, that's my excuse. Right, off to hammer some screws in. Joke.