mickespite Posted October 20 Share Posted October 20 About to do some insulation work and trying to figure out if it would be worth pumping my cavity walls with beads ? I live upstairs in a (2004 build) Duplex apartment, Concrete slab floor, I have been told by an Engineer that its probably 100mm cavity and 50mm expanded polystyrene insulation inside, pumping would give me an extra 50mm of insulation. Worth it ? I heard the outer leaf can remain wet once the cavity is gone ? Link to comment Share on other sites More sharing options...
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