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John Rumm wrote:
wrote:
John Rumm wrote:
wrote:
Hi

Cavity wall (brick & block) with a slightly narrow 1.5" cavity, any
advice re cavity filling it? What fill, if any, would work with such a
cavity? Any tips on diying it?
Do you want to insulate and existing wall, or is this insulating a new
one as it is built?

Its an existing wall, and making holes in it to fill it is no problem.

Any of the normal loose blown in or injected cavity wall insulation
products then...

I thought most of them needed blowing in, I dont have the equipment.
I'd be looking at pour in, and polystyrene bead is the only one I
believe that can be done with. Are there any others? Any specific bead
size, coating, etc? The issue Tim mentioned of beads pouring out of
holes shouldnt be a problem.

NT