dpc 7n blocks cavity wall class b blues

  1. J

    Concrete Blocks above Engineering Bricks

    Hi everyone, first post here. I'm in the process of designing a garden hobby room which is to be built using a cavity wall. My initial idea was to construct it entirely from concrete blocks (considerably cheaper), however I have read here that engineering bricks are better around the DPC and...
  2. T

    Can I build internal leaf of cavity entirely of blocks

    Hi, I'm building an extension and was wondering, can I build the internal leaf entirely of blocks. 7n below ground up to dpc and 3.5n above. Also do I need two course of blues on the inner leaf? I was thinking 9 course of blues outside (ground slopes away a tad and nearly all are visible) and...
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