So I mentioned I had a floor with what looked like a paper felt stuck down with bitumen on it. Managed to sort that one out and so the next door neighbour want thiers done. Only problem is its even worse. Same thing in the lounge, bitumen covered paper felt looking stuff and mile off level, kitchen has ceramics with a ramp in the middle and what looks like a bowl in the center of one half, hallway not too bad but all sub floor is over 100 years old with no dpm. Old pipes in the screed and no idea how deep it goes down. Customer wants engineered wood floor put down. Any subfloor prep Gurus please help :cry:
FLOAT IT!,do not attempt to slap it together like a golden wedding or it could be the marriage from hell and no iam "NOT a guidance freak.
yeah in the hallway, the kitchen would need the tiles uplifted or latexed over to sort out the ramp and the dish. One end would need to come up around 20mm to lose the ramp! The lounge is no way possible to float as there is a massive hump in the floor about a meter off one end. Was thinking about going at it with a breaker to lose the hump and then floating it but am worried about the moisture. the bitumen only cover part of the room
The bitumen paper would have been used as the dpm at the time. Fill in the dished areas or any gullys with ardex na then cover the whole area with same. Float the engineered on timbermate excel using vapour strip at joints and around perimeter 50% under 50% up wall. Once wood fitted then cut off excess vapour strip that's still on show.
shouldnt think you will have any problems with moisture, if your gonna float it with a sheet dpm. Overlap,tape and take it up the skirt/wall.
carpet and underlay always been there before so no problems with moisture. and if the subfloor has no dpm will the underlay with built in dpm do the job with wood going over it? Sounds like it should thanks for the replies
The DPM underlays like Timbermate should not be used if moister is above 75% rh. Bit of a false selling point really when they are sold as having a in built DPM. Its a vapour barrier only. I have heard that you can lay a plastic sheet underneath the underlay tho :? not sure how true that is.
