What Is The R Value Of Vinyl Siding

For foam back and or deluxe vinyl siding.

What is the r value of vinyl siding.

Certainteed s cedarboards insulated siding offers r values up to 2 7 and thicknesses that may reach 1 1 4 inches. That s a remarkable improvement and that will make a tangible difference in how much energy is saved in your home. Does insulated vinyl siding make a building more airtight. What impact does the eps have on the moisture performance of conventional wood framed exterior walls.

It s pretty easy as a building science wonk to dismiss this product. On its own vinyl siding is no better than cement board however it is now possible to buy vinyl with built in insulation. The average price of insulated vinyl siding material is 2 25 to 3 50 per square foot depending on the brand profile and color. 1 16 0 175 to 3 32 0 093 thick vinyl siding hollow backed.

The r value of cement board or measure of insulating qualities is around r 0 50 which is very low when one considers that fiberglass matting has an r value of r 19. On the other hand lp smartside siding can cost up to twice the amount of the vinyl cost making it a more expensive choice. 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.

For hollow back and 7 50 to 12 50 per sq. That is it s not that the insulation makes a home much more energy efficient. The r value of insulated vinyl steel and aluminum siding when you choose one of these siding products backed with quality foam insulation you will increase the r value of the siding to 3 0 4 0. Manufactured with rigid foam plastic insulation laminated to thje siding.

The insulation does add some r value to a wall but only a modest amount typically estimated at r 2 to r 2 7. In terms of costs vinyl siding averages between 5 50 and 12 50 per sq. Conclusions about insulated vinyl siding and its alternatives the data seems to suggest that for most consumers insulated vinyl siding is not a cost effective method of reducing heating and air conditioning bills. Many insulated selections that can increase your home s r value have earned energy star ratings.

Astm d7793 requires insulated siding to demonstrate a minimum r value of 2 0. The foam back provides at least 3 times or more the r value while increasing the cost by at most 3 times or usually doubling it. Usually it costs around 2 dollars a square foot which roughly translates to about 7 000 when installed in an average sized home. This breaks down to 5 50 to 8 50 on average per sq.

Some sources cite r 2 13 2 27 30.