Fiber Cement Board Siding R Value

Foam thicker than a half inch will yield even higher r values.

Fiber cement board siding r value.

As we said before the r value measures the thermal resistance of a material. When tested in accordance with astm e96. Fiber cement insulated vinyl siding and fiber cement can both provide a durable exterior solution for your project. Fiber cement and vinyl r values.

R 11 r 15 2 x 4 framing 2 x 6 framing r. This siding material which can be made to resemble wood grain or even stucco has actually been around for 100 years. This is an increase of 13 of effective thermal resistance. Board must be fastened to the framing members with 11 4 inch long 32 mm type s gypsum board screws spaced 24 inches 610 mm on center.

We ve been providing a better way to build for over 100 years. R value see table 2. Adding inch of rigid foam insulation r 2 in this example will increase a 2x6 stud wall from an effective r 15 to an effective r 17. That s a little less than you ll get from vinyl siding which.

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. Thermal resistance r values for the panels are as shown in table 2. Fiber cement offers minimal energy savings at 15 r value but can be installed with fanfold or insulating sheathing products to improve the r value of the whole siding system. Your nearest restaurant bank theater or grocery store just might be sided with nichiha fiber cement board.

You may have seen fiber cement board or siding and didn t even recognize it. This very durable siding material is quickly finding its way onto more homes due to its good looks fire resistance and high resale value. Hardiepanel siding cempanel siding. Insulation has an r value of r 2 to r 3 5.

Fiber cement siding doesn t add much insulation to your wall system measuring in at a mere r 0 50. Esr 1844 noncombustibility see page 1 section 3 1 flame spread and smoke developed see page 1 section 3 1 1 hour fire walls see page 2 section 4 3 design wind loads see page 4 5 table 4 r values see page 3 table 2. If you have never heard of nichiha fiber cement siding you are not alone. 07 46 46 fiber cement siding report holder.