Tiling on 18mm ply?

[Tom JE]

Theres a sticky by Gcol on this forum. Have a read because he explains what you are asking in there. From memory though i think he suggests 25mm ply.

 

[Softus]

If I screw and glue...

OMG - why do you want to glue it?

 

[fruitcake]

Just thought it would be thorough and help to eliminate movement. If you think its pointless though I won't bother.

 

[Softus]

If it's screwed down then it's screwed down.

All gluing will achieve is to make lifting the boards difficult in the event that you, or anyone else, ever had to.

 

[fruitcake]

Thanks mate. Perhaps I will give the gluing a miss then. Just thought that when you lay ply for tiling the common practise was to glue it as well.

 

[Softus]

You're doing something different though, aren't you?

Most people lay thinner ply on the existing flooring - you're replacing the flooring, hence the need for 18mm ply.

 

[Richard C]

18mm ply screwed ecery 200mm with nogins to support the edges & any joins not supported along a joist will be fine; as long as there is no undue flex in the floor! & use trade quiality flexible adhesive & grout (BAL) not the DIY stuff.

 

[fruitcake]

Thanks for all your advice everyone. Should be fine with this now!