Fiber Cement Board Siding R Value

This siding material which can be made to resemble wood grain or even stucco has actually been around for 100 years.

Fiber cement board siding r value.

R value see table 2. That s a little less than you ll get from vinyl siding which. This is an increase of 13 of effective thermal resistance. 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.

Founded in the mid 1950s this diversified japanese company has been quietly producing fiber cement siding products for years mainly for commercial properties. Fiber cement and vinyl r values. This very durable siding material is quickly finding its way onto more homes due to its good looks fire resistance and high resale value. Thermal resistance r values for the panels are as shown in table 2.

James hardie is the world leader in fiber cement siding and backerboard. If you have never heard of nichiha fiber cement siding you are not alone. 07 46 46 fiber cement siding report holder. You may have seen fiber cement board or siding and didn t even recognize it.

When tested in accordance with astm e96. Your nearest restaurant bank theater or grocery store just might be sided with nichiha fiber cement board. According to table 5 1 of the ashrae fundamentals handbook fiber cement has an r value of 15 better than brick and stone but lower than vinyl at r 60 wood at r 81 and insulated vinyl siding at r 2 0 3 5. We ve been providing a better way to build for over 100 years.

R 11 r 15 2 x 4 framing 2 x 6 framing r. Hardiepanel siding cempanel siding. Fiber cement siding doesn t add much insulation to your wall system measuring in at a mere r 0 50. Fiber cement insulated vinyl siding and fiber cement can both provide a durable exterior solution for your project.

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