What Is The R Value Of Vinyl Siding

On its own vinyl siding is no better than cement board however it is now possible to buy vinyl with built in insulation.

What is the r value of vinyl siding.

For hollow back and 7 50 to 12 50 per sq. The added r value of eps is r 2 to r 2 7. That s a remarkable improvement and that will make a tangible difference in how much energy is saved in your home. In terms of costs vinyl siding averages between 5 50 and 12 50 per sq.

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 insulation does add some r value to a wall but only a modest amount typically estimated at r 2 to r 2 7. What impact does the eps have on the moisture performance of conventional wood framed exterior walls.

Georgia pacific s seasons insulated siding can add an r value of up to 2 8 to your exterior walls in a choice of 14 colors. The primary benefit of insulated vinyl is not what most people expect. 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. Usually it costs around 2 dollars a square foot which roughly translates to about 7 000 when installed in an average sized home.

Some sources cite r 2 13 2 27 30. 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. On the other hand lp smartside siding can cost up to twice the amount of the vinyl cost making it a more expensive choice. Manufactured with rigid foam plastic insulation laminated to thje siding.

It s pretty easy as a building science wonk to dismiss this product. For foam back and or deluxe vinyl siding. Does insulated vinyl siding make a building more airtight. 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. 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. That is it s not that the insulation makes a home much more energy efficient. Certainteed s cedarboards insulated siding offers r values up to 2 7 and thicknesses that may reach 1 1 4 inches.

This breaks down to 5 50 to 8 50 on average per sq.