Fiber Cement Board Siding R Value

As we said before the r value measures the thermal resistance of a material.

Fiber cement board siding r value.

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. We ve been providing a better way to build for over 100 years. Founded in the mid 1950s this diversified japanese company has been quietly producing fiber cement siding products for years mainly for commercial properties.

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. This siding material which can be made to resemble wood grain or even stucco has actually been around for 100 years. You may have seen fiber cement board or siding and didn t even recognize it. This is an increase of 13 of effective thermal resistance.

Fiber cement and vinyl r values. 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. 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. Hardiepanel siding cempanel siding.

When tested in accordance with astm e96. Your nearest restaurant bank theater or grocery store just might be sided with nichiha fiber cement board. Thermal resistance r values for the panels are as shown in table 2. This very durable siding material is quickly finding its way onto more homes due to its good looks fire resistance and high resale value.

That s a little less than you ll get from vinyl siding which. Fiber cement insulated vinyl siding and fiber cement can both provide a durable exterior solution for your project. R value see table 2. 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.

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. Foam thicker than a half inch will yield even higher r values. R 11 r 15 2 x 4 framing 2 x 6 framing r. 07 46 46 fiber cement siding report holder.