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  1. K

    Increse mortar bed size DPC

    I'm self building a porch, have done some bricklaying in the past but very much a keen amateur ! I've made the mistake of not gauging DOWN from DPC top level so when I checked my levels after raking back 3 courses of first corner i found my top level was going to be short by 10mm, can I make up...
  2. K

    Concrete fill DPC cavity ?

    I am self building a porch, have laid trench fill foundations now ready to lay DPC - 3 courses below ground, 2 above all in class B's. My drawings show the 2 skins tied and filled with lean concrete, are these both necessary ? Above DPC the walls will be solid blocks 265mm wide so no cavity...
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