There are four main types of insulation: batt, blown-in (loose fill), rigid board and spray foam. Each has its advantages and limitations, but under the right circumstances, each can meet a ...

Q: We live in a 1925 Berkeley bungalow. The attic is insulated with blown-in cellulose and meets the current code for thickness. Also, the entire underside of the house is insulated with fiberglass.

Question: I have an inquiry regarding spray foam insulation. I am having renovators create a new bedroom in the attic above our existing double attached garage. The renovation professionals and the ...