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  1. T

    Insulate existing gable wall? BCO

    Hi guys/gals I’ve just had a plans appraisal back from our independent buildings inspector regarding a rear extension and loft conversion. He’s asked my architect to explain how the existing gable end wall will be insulated to ensure a u-value of 0.28W/m2k. Obviously the most practical way of...
    • Tyrone Thompson
    • Thread
    • building control cavity conversion extension fill insulation loft officer
    • Replies: 11
    • Forum: Trade Talk
  2. T

    Trench foundation at boundary? Cavity wall position

    I’m building a rear extension on my end of terrace bungalow, my Architect has specified a 600mm x 1000mm concrete foundation. At the adjoining boundary to next door we have a concrete post fence, the 150mm “toe” of foundation on that side of the 300mm cavity wall will need to go slightly past...
    • Tyrone Thompson
    • Thread
    • boundary building control cavity wall concrete extension foundation officer trench
    • Replies: 13
    • Forum: Trade Talk
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