Insulation Under Vinyl Siding

For a cavity r value of 24.

Insulation under vinyl siding.

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. This is typically used to go over the existing siding in order to create an even. 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. Wall 3 r 19 in the cavity plus r6 1 foam board under the vinyl.

Wall 2 insulated with high density spray foam at a nominal 4 inches in the cavity. Installing foam board insulation under vinyl siding improved moisture control. Exterior rigid foam board insulation can make a significant difference in overall thermal. 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.

Foil faced foam board insulation is a great idea but is not a good choice for hot. Does foam board insulation under siding help save energy. 1 2 polystyrine foam board insulation. Foil faced foam board insulation.

Wall 1 insulated with only r 19. 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. It also serves as an air barrier. Wall 4 r 19 in the cavity plus r12 2 foam board under the vinyl.