Tiling on bowed/warped T&G

[Price]

Hi,

All advice welcome please.

a DIY job, I need to tile my bathroom floor. It currently has T&G floorboards which were carpeted over. I lifted the carpet when we moved in and the floorboards have warped resulting in raised (long) edges. Looking at it another way, they dip in the middle along the length of the floorboard.

If I WPB over them and then tile, does anyone know if I am likely to get problems - or should I cut them as close to the wall as I can and replace with new boards or WPB before tiling ?

 

[Olz]

Personally I'd cut the boards back to the walls and replace with 25mm WBP Ply, you can then add extra noggins as required at the same time.

 

[Frosty]

Yup, as the song says..."rip it up and start again!!"

Same as Oli says, 25mm wbp with extra noggins where required.

 

[david campbell]

ditto,don't think theres any cheaper or quicker method that will leave you a good surface to work from

 

[White Room]

The floor boards sound they are not good a quaility, as the other guys have said.

 

[rob]

Yep agree, do it once and do it right. Might take a little longer but at least you wont have possible grout cracking problems due to movement later down the track!

 

[Price]

Thanks all for the advice - looks like it is out with old t&g and in with the wpb. Challenge now is to cut the old ones as close to the (block) walls as I can. Good stuff - thanks>

 

[Perry]

you could make sure the floorboards are well screwed down and overboard with PCI 10mm backer board the undulations being taken up with the adhesive under the backer board 😛ete

 

[rob]

you could make sure the floorboards are well screwed down and overboard with PCI 10mm backer board the undulations being taken up with the adhesive under the backer board 😛ete

Might lift the level of the floor too much!

 

[Price]

Existing boards are 18-20mm. Does anyone know if 18mm WPB would suffice as I have some left from a different project. Joists are at 400mm centres.