Dave Plowman wrote:

In article ,
Space Cowboy wrote:

1. Hard fixings to BWK rather than crazy foam.


Thought the foam was meant to be purely an infill - not the means of
totally supporting a frame.



Foaming glue - just a higher desnity foam - does both, and is in fact a
darned good way of hloding a frame in a cavity wall without cold
brodging it.

It fixes, it draughtproofs, it insulates and it water proofs, and it can
be sliced back, made good and easlt decoretaed after a wipe with
acrylic caulk.

I thnk its exceptionally good stuff for the job.

Hoever its expensive and therefore the temptation is to use insufficient
quantities.

When its worse than useless.