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Purpose of 20mm black layer over solid floor?

Discussion in 'Floors, Stairs and Lofts' started by Ian H, 6 Jun 2017.

  1. Ian H

    Ian H

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    The downstairs of our house is solid floors with about 20mm of black/purple stuff on top of concrete.

    In the hallway it's in very poor condition all around where it had a 10mm gas pipe channeled into it.

    Is it any sort of damp proof layer or is it more of a leveller?

    Could I chip it all up, insulate then tile the floor? Or should I repair it and tile on top?

    Thanks

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  2. Tigercubrider

    Tigercubrider

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    Isn't it a dpc layer between the sub floor and top floor?

    Is your house 50's?
     
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  4. JobAndKnock

    JobAndKnock

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    Possibly asphalt? Hard as iron and chips rather than breaking. Needs an SDS to drill it
     
  5. Ian H

    Ian H

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    Yes, it is a 50's semi and the stuff has fractured, seems hard but brittle.
     
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