Concrete and bitumen compatability

Discussion in 'Subfloor Preparation' started by IanL, Jul 9, 2021.

  1. IanL

    IanL New Member

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    Hello,

    I am currently renovating a 1920s house. At some point in time the underfloor void has been filled with concrete, wooden joists been laid within it, and topped with bitumen.

    After a lot of hard work we have managed to get the joists out in order to use the channels for new plumbing and electrics. Eventually we were planning to use a bitumen friendly self-levelling latex, but we were unsure as to whether filling the channels with concrete would be do-able with the bitumen sitting below it. Any advice?


    Cheers in advance
     
  2. LKAB Gypsol Alan Jackson

    LKAB Gypsol Alan Jackson Well-Known Member

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    Sbr cement slurry coat the bitumen then concrete away.
     
  3. IanL

    IanL New Member

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    Thanks very much!
     
  4. dazlight

    dazlight Super Moderator

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    How deep are they? You could use ardex NA with granno chips
     

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