KB_S1 wrote on Mon, 08 February 2010 16:24 |
The exterior walls are brick with a cavity to frame and plasterboard. |
Quote: |
It would be the type where small holes are drilled into the exterior wall and foam insulation is pumped into the cavity. |
johnR wrote on Fri, 12 February 2010 13:45 |
I'd be wary of relying on expanding foam to improve isolation. It sets rigid and is probably worse than an air gap. Normally in the UK a cavity wall is one with two layers of brick or cement blocks separated by an air gap. This would be where foam is pumped in. I suspect that if you tried to pump it in behind a plaster board wall the pressure would blow the board off. Some cavity wall insulation is in the form of fibres or granules that are blown in. It might be worth investigating one of these. |
J.F.Oros wrote on Fri, 12 February 2010 03:53 |
He was actually asking if he can just pump expanding foam in the cavity through holes |