What's the best insulation to use with 2x4's?

[Steve Barker DLT]

your best bet is wet sprayed in place cellulose. More "R" per inch than fiberglass, AND it stops air infiltration. As a side benefit, it is very fire retardant and also includes borax which is a very good insecticide.

s

check out the info at

[Steve Barker DLT]

If you're stuffing r-19 into 2x4 walls, you're wasting your money.

s