Tank under or above ufh????

[poynton phil]

I am doing a wetroom, and the customer has supplied me with PCI Lastogum for the floor tanking. The question is do I put the ufh and slc down, before I use the Lastogum or after. Any advice is appreciated.

 

[DHTiling]

Tanking should really be above slc in a wetroom, mainly to prevent mould growth but do check with PCI for the suitability of that product with UFH .

 

[Stewart]

I always put it on top, but I use membranes rather than paint on products!


Created on iPhone.....

 

[White Room]

Membranes for me also...

 

[Fliselege]

We have 2 ways of doing it. 1 way is a mechanical membrane on floor going 15cm up the walls, then we throw 2cm of screed on the membrane, cover it in mesh, sparks cable ties his heating cables to mesh then we throw another 2cm of screed on top and do our best to make it look like a snooker table. Other way is to glue heating cable to floor, or use mats, then we'll cover it in self levelling screed, and on top of that we use a cement based membrane, spread it in with a 6mm toothed trowel and smooth it off with the straight side, then use membrane strip in the corners, got some pics on here somewhere where I did a cement based membrane