C
celt
Just seeing a clip on youtube where a guy was showing how to install floor tiles and he was using a cement backer board ontop of a concrete/sand cement floor. Im wondering how common is this. The reason why i ask this is that when working on site all these years, i have never once seen a tiler lay the cement backer board then tiles over it. Its always on top of the screed or ontop of plywood if its ontop of joists.