K
kevemo
always used ply for overboarding but now thinking of tryin hardibacker after problems with height isues prob is not sure how to use it ,guy in tops tiles reckons for over boarding tounge and groove floors you need a thin layer of adhesive [4mm notch] then 6mm hardibacker screwed down every 200mm and then tile straight on top said this will be fine as good as 12mm ply is this right