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    Suspended timber floor over insulated concrete floor ~ insulation needed?

    Thanks so much for speedy response. The words 'should have' are much used in our house!!
  2. B

    Suspended timber floor over insulated concrete floor ~ insulation needed?

    We have built an extension and had the base built for us ~ the usual layers of hardcore, sand, DPC, rigid insulation, more DPC and poured concrete. Because we want a 'traditional' timber floor, we allowed for joists and floorboards. At last inspection BCO said we needed air-bricks to ventilate...
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