The kind of insulation used in the construction business – that pink fiberglass stuff that normally is used in attics and walls- is well known. These insulations, mostly fiberglass, are provided with ...

In my experience, glass wool suits many homes in Massachusetts if attic R-values of R-38 and wall R-values of R-13 are used,' says Hedtler. 'Higher R-values provide better insulation for the cost ...

Each inch of thickness provides an average r-value of 3.5. Mineral wool insulation is stone, minerals, glass and industrial by-products that have been melted and processed together to create a ...

This is a desirable feature for do-it-yourselfers with allergy problems. Also consider the R-value of the insulation. The higher the R-value, the better the insulating qualities of the material.

Your home's R-value score will guide you toward the type of insulation you need. In general, an attic's R-value should be between R-30 and R-49. In particularly cold climates, you might go up to R-60.

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 ...