Insulation By Type & Material
Introduction
- View the full chart here.
- Read more about R-Values, general insulation notes, and more at the Insulation Types page.
Note: This is an ever changing and always growing list, especially with new products and technologies coming out consistently. Please contact us with suggestions and corrections.
- ‘Average’ R-Values listed are for quick calculations and are roughly the ‘mean’ —- erring on the lower side.
- High/Low Ranges given for various products are rough estimates
- Click on product names for an external link to a product of that type (if applicable)
Blanket (Batt, Rolls)
Description & Use
Blanket insulation is made of fiberglass, mineral wool, or natural fibers and comes in rolls or batts. It is usually used to insulate walls, floors, and ceilings. Also is commonly made in flexible duct wraps with typically an integrated vapor retarder facing. The airspace and voids are critical for blanket insulation performance, and you cannot overstuff for better performance.
Types
Fiberglass ◼️ 3.4 avg ◼️ (2.9 to 3.8)
At least 30% post consumer recycled glass. You can buy in higher density or lower (more typical) R-values. Typically sold in exact width sizes for stud spacing and depths to fit in 2x4 or 2x6 wall construction. Comes in faced or unfaced versions. The faced versions have a piece of kraft paper or foil on them which will act as a vapor retarder. The vapor barrier can be broken easily with a couple cuts from a utility knife.