Expanding foam in cavity wall?

Discussion in 'Builders' Talk' started by gawa11, Oct 13, 2021.

  1. gawa11

    gawa11 New Member

    HI there, i have a cavity wall pumped with silver bead. I had to open a few small location in the blockwork which has left small voids. Could i shoot expanding foam in here to fill it up or might that cause issues with damp?
     
  2. rogerk101

    rogerk101 Screwfix Select

    Expanding foam will be no better or worse than what's in there (from a damp point of view), so squirt away!
     
    gawa11 likes this.
  3. gawa11

    gawa11 New Member

    thanks roger, thought bead might allow any water in the cavity to drain better, but as long expanding foam wouldn't soak any moisture up.
     

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