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    Garage floor replacement


    The garage floor is composed of block paving, would it be possible to install a concrete floor on top, or would they need lifting? Would a damp proof membrane be required?

    Asked by John on 14th Oct 2019
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    Best Answer

    EMA brickwork & property maintenance


    If the block paving inside the garage is a continuation from drive way the best thing to do would be to lift and remove the paving, install damp proof membrane and then pour new concrete floor slab with reinforcement steel depending on depth.

    Hope this helps"

    Answered on 5th Jan 2020 - Member since Nov 2019 - report

    "You can keep the existing paving, install a membrane, then you put steel mesh and then lay Concrete on top - 100mm."

    Answered on 14th Oct 2019 - Member since Aug 2019 - report
    Thermal Build

    "Take it up then visqueen insulation and then concrete. Hope this helps.


    Answered on 14th Oct 2019 - Member since Sep 2019 - report
    Anthill&Ka LTD

    Ground bearing floors should not be less than 100mm thick.
    Depends for what you will use the garage. If you are planing to park your car then you can install concrete floor on top, but you will need DPM membrane and reinforcement mesh. Just do not forget to check the height.
    If you do a garage conversion, better to lift existing floors. You'll need DPM membrane,100 mm insulation and on the top minimum 75mm screed and then you can put finish floor down."

    Answered on 14th Oct 2019 - Member since Oct 2019 - report
    Hillview services

    "I would suggest lifting the mono block and inserting a membrane.
    Depending on the size it would cost between £1800-£2200."

    Answered on 18th Feb 2020 - Member since Jan 2020 - report
    Easy build

    "Yes, you can lay a concrete floor on the paving. I advise you to place a waterproof membrane on top of the paving."

    Answered on 28th Oct 2019 - Member since Oct 2019 - report
    L J T Landscspes

    "I would lift the blocks and check what foundation they have been laid on. Yes you would need a damp proof membrane and insulation"

    Answered on 18th Apr 2020 - Member since Mar 2020 - report
    PHR limited

    "It would depend on a few factors.
    How thick is the concrete?
    Where is the damp course?
    What is the base under the block paving?
    Personally, I would remove all paving and substrate.
    At this point you would have a far better view of what needs to be done."

    Answered on 21st Nov 2019 - Member since Jan 2018 - report
    leighs property services (NW)Ltd

    "The block paving would need to be lifted and then dug down, ideally 100mm of stone compacted before membrane and concrete"

    Answered on 31st Mar 2020 - Member since Dec 2019 - report

    "Depending on the damp-proof course in the house you could go over the top or dig down and use Visqueen as a damp-proof course below the concrete.

    Hope this helps!"

    Answered on 23rd Nov 2019 - Member since Aug 2019 - report

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