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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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Concrete floor - screeding - final brain check
Hi again,
Quick recap - got to make up a floor with about 25-35mm screed. The current surface is solid, but it's a bit of a "farmer's concrete" special, meaning it was made with small round pebbles and in a few patches the pebbles are not well attached. ie they're attached but it doesn't take much to loosen them. I suspect if we go digging the less well attached pebbles out we'll get to earth fairly quickly. No vapour barrier either. I should add, that the floor's been fine under quarry tiles so I don't see any need to go replacing it - I just want to make sure the screed gets a good bond. How does this sound: 1) Soak the floor in a stabiliser. 2) Prime the floor with SBR/cement slurry 3) Screed with 4:1 sand/cement + SBR 4) Paint damp proof membrane on top. 5) Finish (ceramic tile or engineered wood depending on location) ? ===== What would be good for 1): Liquid SBR? I think PVA will bite the dust due to the fact there's no vapour barrier. Also, any good recommendations of a paint on DPC membrane? Many thanks Tim |
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