Hi,
Part of a new mini series :)
The other day I needed to fix some celotex in place in a rather fiddly location (bay window ceiling retrofit) so it wasn't possible to make it all a snug fit.
Tried some of the Siroflex PU drywall adhesive
The conduit are drops for any future lighting in that area.
Now I'm off to B&Q to see if I can rig a bit of metal tube and plastic pipe to make a nozzel extension for my foam gun - that upside down work was fiddly and I did get as much foam on me as on the board!
Cheers
Tim