Asphalt Siding R Value

Achieve a higher total r value by combining two different r values.

Asphalt siding r value.

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. Asphalt siding material was made in two common versions one much like asphalt roof shingles but in larger sheets right side of the building photo near the top of this article and the other was comprised of an asphalt coating laminated to hardboard siding material or laminated to a softer wood based insulating board panel often sold as. Therefore the doe s value is on the high end of the r value of a log wall. This asphalt siding is an ingenious product.

As we said before the r value measures the thermal resistance of a material. 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. Most such r value tables ascribe an r value of r 0 87 for wood shingle siding. 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.

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. R inch r thick ness insulation materials fiberglass batt 3 14 fiberglass blown attic 2 20 1 fiberglass blown wall 3 20 rock wool batt 3 14 rock wool blown attic 3 10 rock wool blown wall 3 03 cellulose blown attic 3 13 cellulose blown wall 3 70 vermiculite 2 13 air entrained concrete 3 90 urea terpolymer foam 4 48. When you re purchasing insulation buy or specify r value not inches as r values of materials vary. R values of uninsulated concrete.

It s about 1 2 inch thick wood fiber panels with interlocking male and female grooves an tongues. For example r 38 added to an r 11 results in r 49. Here s a closeup shot of the side of an inselbric panel. 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.

Fiberboard sheathing 1 52 gypsum wallboard or drywall 0 90. Energy and the environment. Energy star fiber glass insulation fact. 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.