Wundafloor - Tile Advice

[wayne]

has anyone tiled over this piped system before? Starting a job Thursday and this is being laid. Would you backer board over it? The website sells there own 4mm boards and recommends Mapei ultra bond to stick them. Never even heard of it. 900x600 limestone going on top of it as well

 

[Ian]

I think I've got some pics somewhere, I'll dig them out later. Basically, the polystyrene was glued to the floor, 10mm of weber floor flex was poured over the aluminium, then ditra, then tiled. If you are going to go down this route, make sure the aluminium is well stuck down as its a bugger for floating if the SLC gets under it.

 

[J Sid]

as above