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  1. E

    Building control say I must knock down wall and rebuild??

    Thanks for your replies. Ken
  2. E

    Building control say I must knock down wall and rebuild??

    Thanks for your replies... The building control's problem is not with the U value but with moisture ingress. I spoke to the technical department at celotex who basically said in reality the wall would be fine, but they couldn't issue a certificate for 'one offs' their certificates have to...
  3. E

    Building control say I must knock down wall and rebuild??

    Hi, My builder has built a brick brick cavity wall and filled the cavity with celotex CG4000 and it meets the required U value, but hasn't left the 25mm airgap between the insulation and the external course. There is 10 - 15mm. Building control say I must rebuild with the 25mm gap. My builder...
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