Best Insulation To Use Under Vinyl Siding

Installing foam board insulation under vinyl siding.

Best insulation to use under vinyl siding.

Most manufacturers charge about 50 percent more for insulated vinyl siding than for non insulated vinyl siding. 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. Many houses built today have a double wall type of insulation with fiberglass batts fastened between the studs on the inside and rigid foam board over. It can help make the installation a smooth process by providing the level surface needed to install new material over existing 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. Contoured insulation that is permanently adhered to vinyl siding. It also serves as an air barrier. Behind this skin is a layer of expanded polystyrene eps that is form fitted to the stepped siding profile of the vinyl.

Insulated vinyl siding has an outer skin made of polyvinyl chloride or pvc just like standard vinyl siding. This detail is used with both new construction and also with renovation work. Before installing vinyl siding over existing wood siding or wall sheathing the wood must be dry and in good condition. But insulated vinyl siding has one unique feature.

The insulation is glued in place for a permanent connection. Insulated vinyl siding is standard vinyl siding with a layer of expanded polystyrene eps foam insulation adhered to it. Installing insulation over moisture or existing rot can create larger headaches later. And just like flat insulating sheathings and fanfolds insulated siding also levels the wall for a better looking siding job.

How to install rigid foam under 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. Kingspan s line of greenguard siding underlayments is designed to be lightweight easy to cut and install durable and highly effective at providing superior moisture control and insulation.