Hi
Ive been browsing your forums over the years looking for guidance for odd tiling DIY tasks, and the advice I have read has been very helpful.
Im currently planning to have my ground floor tiled with 600x600 porcelain tiles, with wet underfloor heating. The main two house rooms are fully open plan through to an extension room (just one long room). The house rooms have timber suspended floorboards, and the extension room has a concrete floor. The kitchen joins to this area through two doors and already has tiling, and I estimate the gap from the timber to the top of the kitchen tiles is around 30mm
My builder friend, who is a great builder but not an expert tiler, had planned to use OSB boards cut around the ufh pipes, and then fill in with tiling adhesive and build up to the kitchen level.
On your forums I've read that using OSB or shuttering ply is definitely a bad thing. So I've told him thats not going to work.
My new idea is to screw down the timber floor boards as well as they can, apply ardex af200 and then put down some very thin silver foil underlay. This will act as some insulation. On top of this foil underlay, I plan on laying out the ufh pipes and secure them to the timber (through the foil) using U nails. I would then use Larsen SLC 1550 and build up to around 18mm . The tiles would be then fixed on this base using Larsen flexible standard set+ adhesive.
I would use a couple of metres of thin decoupling membrane under the tiles in the area where timber floorboards meet the extension concrete floor and use Silicon between the tiles instead of grout. Is that an expansion joint?
I have already bought tiles, silver underlay, tile adhesive. I havent yet purchased any of the SLC1550.
Any advice would be appreciated. All the work is around 2 weeks away.
regards
Rajah
Ive been browsing your forums over the years looking for guidance for odd tiling DIY tasks, and the advice I have read has been very helpful.
Im currently planning to have my ground floor tiled with 600x600 porcelain tiles, with wet underfloor heating. The main two house rooms are fully open plan through to an extension room (just one long room). The house rooms have timber suspended floorboards, and the extension room has a concrete floor. The kitchen joins to this area through two doors and already has tiling, and I estimate the gap from the timber to the top of the kitchen tiles is around 30mm
My builder friend, who is a great builder but not an expert tiler, had planned to use OSB boards cut around the ufh pipes, and then fill in with tiling adhesive and build up to the kitchen level.
On your forums I've read that using OSB or shuttering ply is definitely a bad thing. So I've told him thats not going to work.
My new idea is to screw down the timber floor boards as well as they can, apply ardex af200 and then put down some very thin silver foil underlay. This will act as some insulation. On top of this foil underlay, I plan on laying out the ufh pipes and secure them to the timber (through the foil) using U nails. I would then use Larsen SLC 1550 and build up to around 18mm . The tiles would be then fixed on this base using Larsen flexible standard set+ adhesive.
I would use a couple of metres of thin decoupling membrane under the tiles in the area where timber floorboards meet the extension concrete floor and use Silicon between the tiles instead of grout. Is that an expansion joint?
I have already bought tiles, silver underlay, tile adhesive. I havent yet purchased any of the SLC1550.
Any advice would be appreciated. All the work is around 2 weeks away.
regards
Rajah
