R/Factor: (Thermal Resistance) A measure of ability
to retard heat flow rather than ability to transmit heat.

Wood bevel siding, 1/2X8 lapped

R-0.81

Wood siding shingles 16" 7-1/2" exposure

R-0.87

Stucco, per inch of thickness

R-0.20

Building Paper

R-0.06

1/2" Foil 2 Sides Insulation Board

R-3.6

1" Foil 2 Sides Insulation Board

R-7.2

2" Foil 2 Sides Insulation Board

R-14.4

1/2" Blue Dow Styrofoam

R-3.0

1" Blue Dow Styrofoam

R-5.0

2" Blue Dow Styrofoam

R-10

3/8" Plywood

R-0.47

1/2" Plywood

R-0.62

5/8" Plywood

R-0.78

Pine Board 3/4"

R-0.94

Spruce Boards per 1" of thickness

R-1.25

Common Brick per 1" of thickness

R-0.20

Face Brick per 1" of thickness

R-0.11

1/2" Gypsum Board

R-0.45

5/8" Gypsum Goard

R-0.56

25/32" Finish Hardwood Flooring

R-0.68

Vinyl Flooring

R-0.05

Carpet and fibrous pad

R-2.08

Asphalt Roof Shingles

R-0.44

Wood Roof Shingles

R-0.94