Bathroom Floor Tanking

[Boardrider]

Please could someone let me know if I would need to tank my bathroom floor. The sub floor is pine tongue and groove. If I lay 18mm plywood on top of the sub floor and then tile with flexible adhesive. Would I need to tank the floor?

I may also install electric underfloor heating. Any advice would be greatly appreciated?

 

[Diamond Pool Finishers]

:welcome::welcome::welcome:yes mate tank tank tank

 

[Boardrider]

Cheers Gooner59 is there any particular product that you could recommend? the floor area is about 4m squared.

 

[Diamond Pool Finishers]

i know topps tiles do that homelux wall and floor matting, not knowing were you are ,plus theres loads on the web just look

 

[Deleted member 9966]

hi Boardrider

if you're intending on using the bathroom as a wetroom or know that it will be subjected to a lot of water, then tanking the floor as well as the walls will be a very good idea.

speak to Wetdecs, one of the forums sponsors, as they know a thing or two about wetrooms and tanking

oh and :welcome:

GRR

 

[Boardrider]

Hi GirlRacerRed thanks for the welcome! the room is my downstairs shower room with a normal shower tray. The floor will hopefully not get too wet but you never know.... Thanks for the advice I will speak to wetdecs.

 

[spooner68]

Hi GirlRacerRed thanks for the welcome! the room is my downstairs shower room with a normal shower tray. The floor will hopefully not get too wet but you never know.... Thanks for the advice I will speak to wetdecs.

No need to tank, waste of time and money if you have a properly installed and sealed shower enclosure. More so with it being downstairs. Screw the ply down at 150mm centres (avoiding water pipes) flexible adhesive and grout should do the rest.

The most regular failure I come across is in the foot of the wall plate. You MUST Silicon inside this before you fit the enclosure or water can run inside the wall plate and will leak out at the back of the joint with the tiles. Most enclosures will not tell you to do this. Mistake.

 

[DHTiling]

Just to add , with it bieng a shower room , personally i would use a cement backerboard instead of ply...a lot of air moisture and thermal expansion causes ply to expand and contract...the backerboard gives a more stable substrate IMHO...Just another option..

 

[smurf21]

instead of a tanking kit overboard with No More ply water resistant tile backer board 6mm thick then tile with flexi if you want it waterproof just paint with SBR job done...

 

[Diamond Pool Finishers]

instead of a tanking kit overboard with No More ply water resistant tile backer board 6mm thick then tile with flexi if you want it waterproof just paint with SBR job done...

hows the sbr going to tank wall/floor intersection ,you need a membrane dude