air gap

  1. R

    Advice - add PIR insulation between rafters inside kitchen and plywood over the top

    Hi All, We have a kitchen which is absolutely freezing in the winter, because there is no insulation in the roof. Please see attached picture, we have rafters which are 42mm deep, with plywood, a membrane and the on slate on top of those rafters (no insulation). I would like to buy 40mm PIR...
    • robbotpommp
    • Thread
    • advice please air gap ceiling insulation moisture content pir insulation board rafters
    • Replies: 0
    • Forum: Building
  2. D

    Patio sub base against neighbours garage wall, please dont fall over

    Hi, I am hoping someone is able to help me. I am in the process of planning a garden renovation, which will involve moving the patio down the bottom of the garden. Unfortunately, the garden dips here and requires building up approx 5 inches. My neighbours garage backs onto this space and the...
    • DP87
    • Thread
    • air gap gabion wall retaining heave patio retaining sub base
    • Replies: 5
    • Forum: Your Projects
  3. I

    Dormer cheek and wall insulation

    Hi, in the middle of doing a loft conversion and had a question about the positioning of the kingspan in the dormer cheeks and main dormer wall. The dormer cheeks are constructed with 4x2s and the main dormer wall is 6x2. Both finished with plywood and breathable membrane with clay tiles plus...
  4. B

    Air gap needed if roof has no membrane?

    Hi, Recently purchased my first house, and I'm in the process of sorting out the loft. The plan is to insulate the roof to <0.18U, so that in the future it can be converted to a livable space once I can afford it. This is a mid-terrace house built in the 1930s. The roof construction is slate...
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