Hello! 1ST FLOOR ISSUE I've just bought a semi detached home and ripped up the carpets and the floors are all chipboard tongue and groove. They creak in a range of spots. We drilled a hole from the ground floor into the ceiling and there is no insulation of any kind, the boards are on the joists I think. The boards are a bit dirty in various places. We have had a variety of builders come around to discuss the issue of removing creaking and making more sound proof as walking around upstairs is loud downstairs, even with the original carpet that was there. I am really looking for an expert in this area to advise. The options we have had so far: * Do nothing, screw down the places it's creaking and put an overlay and thicker carpet on * Replace with plywood, with something like Rockwool insulation under * Replace with chipboard that comes with a sort of foam backing (Deckfon?) and float it on the joists - one guy said you can put this right onto the joists and another has said the manufacturer says it has to go on top of another subfloor - nobody is sure what is right * Use traditional floor boards with gaps - I cannot see how this would stop sound with gaps - suggestion to put insulation inside however I'm at a loss as to what the best solution is and would really value opinions on this. BATHROOM ISSUE The second point on flooring was the bathroom and whether it is better to use marine ply then with a concrete-backed board or DITRA mat to aid tile stability. The floor would need underfloor heating. Thanks so much to anyone who has time to help.