05-03-2025, 01:37 PM
Random thoughts for fodder:
Spray foam requires full access to the stud cavities (or whatever they are called). I was all into spray foam, until I learned how it can trap moisture. Adding it to an existing structure requires thought about how to manage moisture.
We retroed our first house with blown cellulose. You need a hole or two in each stud cavity, that will need to be patched. We did it right before we re-sided the exterior, so it was not an issue. We had a contractor do the insulation (we did our own siding). He had it done in a day, for a small house.
Spray foam requires full access to the stud cavities (or whatever they are called). I was all into spray foam, until I learned how it can trap moisture. Adding it to an existing structure requires thought about how to manage moisture.
We retroed our first house with blown cellulose. You need a hole or two in each stud cavity, that will need to be patched. We did it right before we re-sided the exterior, so it was not an issue. We had a contractor do the insulation (we did our own siding). He had it done in a day, for a small house.