Floor tiling - 18mm ply

[GaryVenters]

Yep, that's the way to do it, use WBP ply and use an SBR primer on the UNDERSIDE and edges, if there's any movement in the floor at the moment then brace the joists, then get a good flexible adhesive suitable for ply, cement based ( bags ) not tubbed gear

You say use an SBR primer on the UNDERSIDE and edges, do you have to prime the Topside aswell of the ply ?

 

[david campbell]

not unless the adhesive recommends this,to my knowledge only unibond instructs this and not many tilers would use there stuff

 

[GaryVenters]

not unless the adhesive recommends this,to my knowledge only unibond instructs this and not many tilers would use there stuff

Thanks Dave, thinking about it I may also put 6mm hardiebacker on top of the 18mm ply, do you reckon thats best ?

 

[david campbell]

it's a more stable backing for tiles mate so if you have the space then i would go for it