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  1. C

    New floor construction

    Hi, constructing new extension. On the floor was going to construct it with the following layers. Hardcore then sand blinding, DPM then 100mm of insulation then 100mm on concrete. Question is, shall I go for a conventional screed - not too sure how thick [75mm or 100mm] or can I lay on top of...
  2. C

    Insulation thickness on cold flat and pitched roof

    Hi, I am building an extension with a part flat roof and also pitched roof construction. The joists are 150mm x 50mm - 400mm centres on pitched roof and 200mm x 50mm on flat roof. Want to have insulation between rafters. Due to the fact that I need an air gap between insulation and breather...
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    Kingspan insulation thinckness on extension

    Hi, I am building an extension with a part flat roof and also pitched roof construction. The joists are 150mm x 50mm - 400mm centres on pitched roof and 200mm x 50mm on flat roof. Want to have insulation between rafters. Due to the fact that I need an air gap between insulation and breather...
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