The vinyl siding acts as a skin permanently adhered to the insulating foam core.
House insulation under vinyl siding.
It also serves as an air barrier.
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.
Why do homes need house wrap.
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.
The adhesive used to attach the siding to the vinyl actually cures to create a permanent bond between the two components.
Its primary purpose is to prevent air and water leaks that may have seeped past the vinyl exterior.
Rigid foam insulation and vinyl siding.
The insulation also adds some r value or insulating quality to the siding.
Installing foam board insulation under vinyl siding today more than ever before homes are being built with foam board insulation installed on the outside of the sheathing and under the siding.
Learn more about this process in the video.
Insulated vinyl siding is made of two primary components.
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.
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.