R Value of Insulation

From there you will be able to click the links to view details on the uses and installation of each type of insulating product.

What is R-value?

The following insulation values are based on 1" of product thickness.

Vacuum insulated panel R-30–R-50

Silica aerogel R-10

Polyurethane rigid panel (CFC/HCFC expanded) initial R-7–R-8

Polyurethane rigid panel (CFC/HCFC expanded) aged 5–10 years R-6.25

Polyurethane rigid panel (pentane expanded) initial R-6.8

Polyurethane rigid panel (pentane expanded) aged 5–10 years R-5.5

Foil-faced polyisocyanurate rigid panel (pentane expanded ) initial R-6.8

Foil-faced polyisocyanurate rigid panel (pentane expanded) aged 5–10 yrs R-5.5

Polyisocyanurate spray foam R-4.3–R-8.3

Closed-cell polyurethane spray foam R-5.5–R-6.5

Phenolic spray foam R-4.8–R-7

Thinsulate clothing insulation R-5.75

Urea-formaldehyde panels R-5–R-6

Urea foam R-5.25

Extruded expanded polystyrene (XPS) high-density R-5–R-5.4

Polystyrene board R-5.00

Phenolic rigid panel R-4–R-5

Urea-formaldehyde foam R-4–R-4.6

High-density fiberglass batts R-3.6–R-5

Extruded expanded polystyrene (XPS) low-density R-3.6–R-4.7

Icynene loose-fill (pour fill) R-4

Molded expanded polystyrene (EPS) high-density R-4.2 22-32

Air-entrained concrete R-3.90

Fiberglass batts R-3.1–R-4.3

Cotton batts (Blue Jean insulation) R-3.7

Molded expanded polystyrene (EPS) low-density R-3.85

Icynene spray R-3.6

Open-cell polyurethane spray foam R-3.6

Cardboard R-3–R-4

Rock and slag wool batts R-3–R-3.85

Cellulose loose-fill R-3–R-3.8

Cellulose wet-spray R-3–R-3.8

Rock and slag wool loose-fill R-2.5–R-3.7

Fiberglass loose-fill R-2.5–R-3.7

Polyethylene foam R-3

Cementitious foam R-2–R-3.9

Perlite loose-fill R-2.7

Wood panels, such as sheathing R-2.5

Fiberglass rigid panel R-2.5

Vermiculite loose-fill R-2.13–R-2.4

Vermiculite R-2.13

Brick R-0.2

Glass R-0.14

Poured concrete R-0.08