For home improvement purposes, R-values range from about R10 for some flooring materials to R60 for dense attic insulation materials. But, this is where it gets complicated: The assigned ...

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.

What does that mean? — Doris L., Pittsburgh A: R-value refers to the level of resistance to heat flow that insulation — from fiberglass attic insulation to pipe wrap — provides. Heat ...

Once you find your zone on the map, you can then use the R-value insulation chart below to determine the level of insulation you will need to insulate your attic, ceiling, walls, floor ...

This means you get a lot of inches of depth, but the resultant insulation R-value is not as high as you expected. For your attic, blown-in insulation is always a good choice. This can be ...

Homes and buildings need insulation ... R-value - as much as 50 percent. By some estimates, 50-60% of your heat escapes through light fixtures, vents, and directly through your ceiling into the ...

Say you find 14 inches of blown-in cellulose insulation, which has a typical R-value of around R-3.5 per inch, in your attic. That means your attic is insulated to about R-49, or 14 x 3.5. Keep in ...