The R-value for insulation is a way to measure how much resistance the insulation has to heat flow. The higher the R-value, the more the resistance and the better the material is at insulating a home.

Insulation R-value ratings can vary based on the type, thickness, and density of the insulation material. For home improvement work, standard insulation R-values range from R-10 to R-60, depending ...

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 ...

When you talk with insulation contractors, make sure they quote the R-value of the insulation you are getting. Particularly with blown-in, loose-fill insulation, the density can be too low.

R-value is the "resistance of heat transfer" found in home insulation. Every region of the country has a DOE-recommended minimum R-value rating.

In South Georgia, Energy.gov recommends insulation with an R-Value of 30-60 for attics, 22-38 for cathedral ceilings, 13-15 for cavity (room walls), and 13 for floor insulation.

For most types of insulation, the R-value is determined by the thickness of the material. Fiberglass insulation 3 1/2 -inches thick might have an R-value of R-11, while the same material 6 inches ...

Foam insulation has the advantage of sealing, as well as insulating, and has the highest R-value, 5.1 per inch, of all the insulating products. However, it is also the most expensive.

For example, a person living in the southern tip of Florida is in Zone 1 and needs an attic R-value of R-30 to R-49. Alaskans are in Zones 7 and 8, requiring R-values from R-49 to R-60.