Consider this list of typical insulation materials and the average R-values per inch to get a better idea of which type of insulation to use for your house. Loose-fill or blown-in insulation: R-2. ...

Rigid insulation boards: High R-value per inch Each type of insulation comes with different pros and cons. For example, structural insulation panels are hard to add to homes and are better to use ...

Q: I know you have talked about insulation before and you keep mentioning something about a value for the insulation and how much is needed. Where can I find information ...

Q: I read in a column of yours that home insulation should have a "proper R-value." What does that mean? — Doris L., Pittsburgh A: R-value refers to the level of resistance to heat flow that ...