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    Cavity Wall Insulation Problem

    They are, but haven't seen this. Do I talk to the builder or building control? Will it cause a problem?
  2. L

    Cavity Wall Insulation Problem

    My builder has installed a PIR insulation solution for a block/block cavity wall. The PIR solution suggests that it should be tight to the inside cavity providing a void on the back of the outer skin. This is to allow any water ingress to drop to the bottom. However they have filled the cavity...
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