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Break out concrete, lay DPC, insulation, then screed?
If your base floor isn’t great, then structural concrete instead of screed.
We took up our floor as part of the extension, and it ended up being concrete rather than screed, so took the builders ages to take it up, with the idea that we would insulate, wet underfloor heating and then screed.
The block and beam ended up being beam and polystyrene blocks, so needed to pour normal concrete on the underfloor heating pipes.
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Does anyone still have a step down kitchen
Yes.
if so do you have air-bricks/vents from under the raised floor into the lower kitchen?
There's been a large gap there since we redid the living room floor. Will be putting a generous vent as kitchen is redone. Previously very damp in that corner, seems fine now.
Doesn't it smell damp / you get small beasties in the kitchen? I'm trying to work out how the hallway was supposed to ventilate originally. It doesn't make sense to be a dead corner, and in a terrace you can't go sideways.
It did while it was drying out initially but seems to have gone. You get the odd whiff of damp in the morning when it's been really wet out for a few days, but that could just as easily be from the poorly fitting cellar door (house is 1890s, no DPanything under floor or in cellar, just dirt and bad concreting). Kitchen itself is well ventilated, some days you can feel quite the breeze from under the step, very reassuring. We have a fair few spiders around an about the house, can't say there's more or less since we opened that up. No sign of anything else crawling about though.
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Acliff
atk
@hoefla
I may have asked this before, but have not got any more decisive in my thinking...
Does anyone have experience of breaking out a concrete floor and replacing it - either with more concrete and insulation under screed, or with raised timber floor?
I have a 1915-ish house, brick walls, raised timber ground floor, which would have originally stepped down into the little kitchen at the back onto presumably quarry tiles on blinding or whatever went under them. It's now level through from the hall to the kitchen, I haven't done any proper investigation but I assume at some point it's been filled in and concreted. It's bloody cold in winter and I suspect is contributing to damp issues.
Does anyone still have a step down kitchen - if so do you have air-bricks/vents from under the raised floor into the lower kitchen? Doesn't it smell damp / you get small beasties in the kitchen? I'm trying to work out how the hallway was supposed to ventilate originally. It doesn't make sense to be a dead corner, and in a terrace you can't go sideways.
I think my options are:
I am also planning to insulate the rest of the ground floor (and some of the walls). Anyone done this? (Themselves or getting people in.)