Installing Vinyl Siding Over Foam Insulation

This type of insulation may change and flatten the specialty built in contour of the panel causing the siding to bulge or ripple.

Installing vinyl siding over foam insulation.

Always follow the manufacturer s instructions for installing rigid foam insulation. Some people use roofing nails but if a strong gust of wind gets under the siding it may not hold. Of foam and you can t use furring strips which are not a flat solid surface without voiding the warranty. To secure the foam use two inch cap nails.

Vinyl siding can be used in original construction or as a replacement for old siding. This detail is used with both new construction and also with renovation work. Is the fan fold foam an adequate weather resistive barrier. Existing wood siding must be in good shape with no rot or mold and fastened tightly to the wall.

The foam on the outside keeps the wood frame inside the wall warm and dry in. Fit the rigid foam insulation snugly and seal all seams with the specialized tape. It typically is installed over rigid foam board insulation fastened to wood wall sheathing. Plus rigid foam insulation applied over the outside walls.

Some manufacturers strongly recommend against the use of drop in type foam or fiberboard behind its vinyl siding. In fact the two products combined make your home super insulated from outside wind and weather. Apply sealant around windows doors and trim. 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.

So technically speaking you can t nail through or even use 2 in. Siding over rigid foam. Before installing vinyl siding over existing wood siding we first install a layer of fan fold foam insulation. The by the book answer to your question is that vinyl siding manufacturers require a flat solid supportive surface and limit foam installed under their siding to a maximum of 1 in.

Below are some of the design details along with the benefits. The answer happily is yes. A corresponding editor paul fisette responds. Installing house wrap with rigid foam insulation.

If the wood siding is beveled or lapped you. The nails have a plastic cap that keeps them from damaging the foam. It adds up to a robust system. Installing vinyl siding over wood siding wood must be sound.

Vinyl siding must be installed against a flat surface.