Posted here a few times for opionions about the best way to proceed.
Here's another job I'm working on and would appreciate someone's
opinion who has been there, done that.
Baseboard hot water system replace by forced air last year. I have
been slowly removing the old piping and heat shield. Behind the shield
is typically block wall (whole house is block/plaster exterior) with
1x2 strapping for the plaster and to hold the shield.
I have been filling gaps and cracks with foam or caulk, subject to the
size of the crack. There is some room for insulation, but not much.
Should I just put roxul or pink insulation behind the wall and then a
vapor barrier and finally, replace the trim? It's 10" high throughout
the house, so I don't think I need to re-plaster/drywall before
affixing the trim.
Presumably I need something firm to hold the trim level with the wall
- what about insulating with 1" styrofoam which I glue to the 1x2
strips? And then vapor barrier and finally trim?
One other option is the silver-looking rolls of foil with air bubbles
between them. Would that be an appropriate vapor barrier/insualtor,
used in conjunction with styrofoam?