Best way to raise a floor that floods

C

CCB

New Member
Floor is 30m2 with a variance of ~0.04m and ~0.08m (mostly the latter). Needs to be raised to match the rest of the ground floor. The question is what is the best way we could be talking c.3m3 of material? The catch is the floor needs to be solid as it's susceptible to floods. Current floor is concrete with a layer of bitumen. What we don't want is any chance of water being trapped so rules out insulation boards and raised wooden floor. We have no idea if there is DPM, but we assume so or they've used the bitumen as that job. Walls are a combination of solid and plasterboard. Thanks
 
Your best bet would be to turn house upside down make living upstairs and bedrooms downstairs then you lose less when it floods again
 
Possibly a bonded screed with integral waterproofer. What's the cause of flooding and point of ingress. When flooding how much water builds up.
 
Mark DM said:
Possibly a bonded screed with integral waterproofer. What's the cause of flooding and point of ingress. When flooding how much water builds up.
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The brook due to excessive rainfalls and high water table. It's not a big deal to us because it's way of life but whilst we can put in resilient measures there will always be a small risk that water comes in and the room we are talking about is worse hit. It was 10cm but nearly 20 in that room. Raising the floor would minimise the damage. We plan to screed across the whole of the ground floor as it's all "slightly" wonky. I hadn't realised you can screed with a waterproof product within. We planned to tile with a porcelain tile across the board with water based underfloor heating. Might as well seeing as the whole ground floor is being gutted.
 
Obviously I don't know the whole scenario or set up but another possible consideration would be the creation of a sump appropriately positioned with a pump auto controlled
 
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