Asphalt Siding R Value

If any readers think that the r value of cedar shingles might be higher it s worth consulting standard r value tables for a reality check.

Asphalt siding r value.

As we said before the r value measures the thermal resistance of a material. For instance if you have a material with an r value of 12 attached to another material with an r value of 3 then both materials combined have an r value of 15. Here s a closeup shot of the side of an inselbric panel. Georgia pacific s fiberboard wall sheathing offers high insulation value a sturdy panel and sound deadening and can be used in many above ground applications.

Therefore the doe s value is on the high end of the r value of a log wall. Fiberboard sheathing 1 52 gypsum wallboard or drywall 0 90. R value table common building materials siding materials hardboard 1 2 0 34 plywood 5 8 0 77 3 4 0 93 wood bevel lapped 0 80 aluminum steel vinyl. If you are using thicker 5 8 inch shingles the installed siding will have an r value of at most about r 1 9.

Energy and the environment. It s about 1 2 inch thick wood fiber panels with interlocking male and female grooves an tongues. Energy star fiber glass insulation fact. Achieve a higher total r value by combining two different r values.

Concrete homes magazine web search 5 18 2010 r value for concrete glass other materials wikipedia web search 5 18 2010 citing ristinen robert a and jack j. Cea unit 2 lesson 2 2 cost efficiency and analy sis r value and densities chart page 1 r value and densities chart material r value per inch r value per unit inside air film 0 68 air space between studs 0 95 building paper 0 06 in. This asphalt siding is an ingenious product. For example r 38 added to an r 11 results in r 49.

Most such r value tables ascribe an r value of r 0 87 for wood shingle siding. R values of uninsulated concrete. This cost efficient product features interknit wood fibers that protect against on the job abuse and help supplement required wall bracing in traditional stud wall construction. When you re purchasing insulation buy or specify r value not inches as r values of materials vary.