Carpets, Lino & Flooring

Laying over part floorboard part concrete floor

Anonymous user 01/03/2024 - 3.00 PM

I have recently purchased a house with an old extension, leading up to the extension the floor is suspended and the back 2 metre of the house is concrete. The concrete seems dry with no signs of damp and previously they had T&G chipboard screwed directly to the the concrete with laminate on top. I have been told this is not the correct way to do it and can trap damp under the T&G, I wanted to fit karndean or engineered wood or something similar but was wondering how to do this on the concrete without causing issues with trapping damp etc? my thoughts were paint the concrete with liquid dpm, then latex, then T&G chipboard screwed down Then ply (any idea a on thickness) Featehredge Then karndean or underlay/engineered wood?

MPL flooring.

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Kidderminster

5.5mm flooring grade ply on the wood side. Epoxy DPM on the concrete then self level up to the ply and feather the join

Answered27 January 2023

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Ben gallagher

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Huddersfield

5/6mm ply on the wooden side of the floor . You can then coat the concrete side with an Epoxy dpm , once dry I would lay a moisture tolerant latex screws and level up to the ply and feather the join between the two , once dry you can go ahead and lay your flooring of choice

Answered27 January 2023

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Eclipse flooring

Rating: 5 out of 5

5/58 reviews

Wirral

All about the levels on what thickness plywood to use. But you want a quality plywood like SP101 in 6 or 9mm. Moisture test is needed on the concrete in case a liquid dpm is needed. Then make sure the concrete is clean of contamination. Then level the concrete side to the plywood level. Once dry wood flooring will be ok to lay. If having LVT then feather finish isn’t good enough as the wood side will expand and contract over time leaving an unsightly line, so it will need a fibre screeding compound at 5mm over the whole area.

Answered27 January 2023

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