Front door frame advice / removing tiles

Discussion in 'Builders' Talk' started by new_to_it_all, Aug 15, 2023.

  1. new_to_it_all

    new_to_it_all New Member

  2. Mark DM

    Mark DM Well-Known Member

    If referring to the black plastic strip, its a cavity closer. If you remove it the cavity will be open . Not ideal for supporting a mat tho. If there's room for ply beneath the mat then you could create adequate support if not then an option is to remove it, line the cavity with a sheet of dpm (damp proof membrane), forming a continuous tray and then fill it with concrete/ screed. Without dpm then you will create a damp issue.
     

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