Plyboard before tiling
Discussion
I found a good guide for doing this here: http://www.ultimatehandyman.co.uk/tiling/tiling_wo...
Borris-Bear said:
I know i'm supposed to lay some WBP Plyboard over the floorboards before tiling my bathroom but what thickness board is recommended?
Before you lay down the ply ensure all existing floorboards are nailed screwed down so there are no kickers or wobblers, they lay your WBP 6mm down and screw it down every 300mm centres seems excessive but this will stop any movement. Overkill is the recipe for success here. Make sure the existing floor boards are completely solid. Then (at least) 12mm ply (I glued mine as well) screwed every 150mm. You really, really don't want this to move. My bathroom is on the first floor with a natural slate floor, and it hasn't yet given any indication of moving in 18 months.
About 5 years ago I put slate directly onto boards as I didn't want a 1.5" step into the bathroom. I was a bit nervous at first but screwed the boards down well, filled the gaps and used flexible grout and adhesive.
There hasn't been a single crack or flexing problem so far but that may be down to the boards being pretty thick to start with & screwed down very well.
There hasn't been a single crack or flexing problem so far but that may be down to the boards being pretty thick to start with & screwed down very well.
Probably overkill, but I completely replaced my floorboards with 18mm WBP before I tiled my bathroom floor with Travertine tiles. I screwed it down at much closer than 300mm centres and added extra 'noggings' between the joists as I was nervous about tiling on a wooden base (all my other tiling has been on concrete floors). It's been down about 18 months without so much as a hairline crack in the grout and I used a flexible adhesive and grout too. It took me a while to do, but I'd hate it even more if I ended up doing it again.


Edited by OldSkoolRS on Sunday 25th October 18:21
squicky said:
Out of curiosity, did you tile the wall before or after the floor (ie are the wall tiles sitting on the end of the floor tiles or the floor tiles sitting next to wall tiles).
(Just pondering for when I next do tiling
)
I think I tiled the walls first and used spacers to make sure there was a gap between the two edges, otherwise there is no room for grout and it will just drop out. I'm sure a professional might do it differently, but I had delays doing the underfloor work and it meant I could at least get some tiles up on the walls to help my morale. (Just pondering for when I next do tiling
)
I also wanted the top row of tiles to be above the join in the plasterboard, so the small increase in tile height helped. I removed upto 1200mm height of the old plasterboard complete with the old tiles and simply replaced the plasterboard with new. Quicker and cheaper than paying for a plasterer.I turned my picture the right way now incase anyone wonders about the water coming out of the sink comments above.

Edited by OldSkoolRS on Sunday 25th October 18:28
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