Blown in cellulose is highly recommended if you have the blower to get a higher compression. I used it in a house in 1993 and it is still performing very well. It is also the cheapest option.
If you are space constrained, polyurethane spray is the best (high density, 2lb) and if you can afford it. My installer charges around $1/sq ft/in thick. It can be done cheaper but check the references of the installer. There are ways to cheat with this stuff.
I hate fibreglas in all its forms. Soon it will be labeled a carcinogen. The evidence is building up. ROXUL is a much better batt insulation.
|