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subfloor void

  1. A

    Is this salts or mould in subfloor void?

    I have a subfloor void in a room which has a unused fireplace of a 1930s semi in the north west of england. There is lots of white deposit on the subfloor void and when I dig the floor the ground is like clay. Is this deposit mould or salts? I cant see any on the underside of the floorboards its...
    • Adam78
    • Thread
    • damp dpc mould salts subfloor void
    • Replies: 12
    • Forum: General DIY
  2. L

    Soil-filled subfloor void under Victorian House

    We recently discovered that ground floor living room of our Victorian terrace house is a concrete slab, under which is a layer of DPM, then sand, then soil. When we opened it up, we were expecting to find a suspended timber floor, with a void providing ventillation (this is what the neighbours...
    • LKP1000
    • Thread
    • concrete floor subfloor subfloor void victorian terrace
    • Replies: 11
    • Forum: Building
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