Insulation properties of building materials

[ROBERT V. YOUNG]

A link to the insulation properties of building materials.
http://www.sizes.com/units/rvalue.htm

[An HI]

Originally Posted by ryoung7

A link to the insulation properties of building materials.
http://www.sizes.com/units/rvalue.htm

Some of the R values quoted appear to be outdated or may be different due to variations in US materials.

Material:-------------- R/inch
cellulose----------------3.8
loose f'glas--------------3.0
f'glas batts--------------3.5
extruded p'styrene-------5.0
p'styrene beadboard-----3.6 to 3.8
urethane foam-----------6.0 to 6.5 (depending on quality)

[ROBERT V. YOUNG]

Thank you for your input.
I though it might help others.