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most cost effective cavity wall construction

Discussion in 'Building' started by browfish, 12 Apr 2012.

  1. browfish

    Joined:
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    Location:
    Southampton
    Country:
    United Kingdom
    I am just about to cast the footings of our extension and time to think about the next phase.

    I need to build a cavity wall and was wondering what the most cost effective materials are.

    I have been looking at thermalite turbo blocks (0.11W/m2k) and understand these can be used on both the inner and outer skin (walls are being rendered and cedar clad on outside an plastered on the inside. Using this i can acheive 0.28 with 25mm celotex CW4025.

    Are there other brands/products that would be cheaper than this? Would a normal concrete block and thicker insulation be cheaper?

    thanks
     

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