we're looking into SPF for these spaces.
The crawl is very tight, probably 6" to 18" below the joists, which are 6".
T or F? For crawl space, close cell is better idea for water resistance and R value?
Are all SPF close cell products basically the same?
Our roof will be a project this year.
It is a cathedral with probably 6" joists also.
If we redo the sheathing, is spray in a good choice or SIPs?
And what Is the best idea for preventing ice dams on the roof?
We're on Long Island and just last week we had an ice dam that ripped off and twisted part of a gutter.