Insulation Under Vinyl Siding

In reality rigid foam board which sometimes comes in fanfold usually only has an insulating factor of r 1 and does not add any appreciable insulation effect to your home.

Insulation under vinyl siding.

By filling the voids behind the siding s stepped profile the insulation makes the complete material stiffer and more resistant to warping and movement than conventional vinyl siding. Wall 3 r 19 in the cavity plus r6 1 foam board under the vinyl. One of the biggest advantages to installing exterior rigid foam board insulation is improved. Does foam board insulation under siding help save energy.

Exterior rigid foam board insulation can make a significant difference in overall thermal. Installing foam board insulation under vinyl siding improved moisture control. 1 2 polystyrine foam board insulation. And even though some manufacturers call it rigid foam insulation for the purpose of vinyl siding it basically has the same insulating value as a piece of plywood.

For a cavity r value of 24. These benefits make insulated vinyl seem like an easy worthwhile upgrade to conventional vinyl but there s a significant cost increase with insulated vinyl and many builders and homeowners question whether the price premium is. Wall 4 r 19 in the cavity plus r12 2 foam board under the vinyl. The insulation also adds some r value or insulating quality to the siding.

Wall 1 insulated with only r 19. Wall 2 insulated with high density spray foam at a nominal 4 inches in the cavity. This is typically used to go over the existing siding in order to create an even. Installing foam insulation under vinyl siding is a wise choice for homeowners who are seeking to protect their homes against moisture infiltration as well as improve energy efficiency.