On Apr 29, 12:26 am, BZ wrote:
Edwin Pawlowski wrote:
Consider the spray in foam. Probably will cost a bit more, but would do a
very good job.

That might be the way I have to go just because the other options would
be so labor-intensive. But my Googling says that this is a
professionals-only technique. I was hoping for a cheaper alternative.

The best is blown in foam, forget Reflextic. Foamboard
Polyisocyanurate R .7.2" is also an option. You will get a payback
with better insulation