These kits typically yield 200 board feets’ worth of spray foam, making them a good candidate for medium-sized projects, like sealing roof and wall junctions, attic walls and basement sill plates.

Some of these are considerable and some are negligible, but unless you buy one of those DIY spray foam insulation kits, the largest ... applying it to basement walls tends to be the most pricey.

I wanted insulate the ceiling of the basement. With polyurethane foam. Mainly to protect dust, and sound. Friends suggested DIY kit and I found this: https://www ...