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Best way to fill hole after removing overflow and waste pipe

Discussion in 'Building' started by veedee, 1 Oct 2019.

  1. veedee

    veedee

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    I have just removed a copper waste pipe and toilet overflow pipe that is no longer needed..

    The waste pipe in particular has left a large gap (half a brick wide) and I was curious to know the best way to make good/fill the gap

    My wall is of brick/block cavity construction (with no insulation)

    My fear is potential bridging of the dpc
     
  2. charliegolf

    charliegolf

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    Push something into the hole to a depth of 2 inches as a barrier; then fill the 'outside' 2" with expanding foam. Repeat inside and out.
     
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  3. Harry Bloomfield

    Harry Bloomfield

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    I would want remove the half brick, track down a whole brick and set that in the outside face of the wall - just so it looks cosmetically correct. The inside leaf of the wall can be done with brick, just sand and cement, or foam depending on whether it will be on show or hidden.
     
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