Do I Need Foam Under My Vinyl Siding

But insulated vinyl siding has one unique feature.

Do i need foam under my vinyl siding.

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. This detail is used with both new construction and also with renovation work. Also during this siding process you may also consider asking your contractor to add foam insulation between the vinyl and the house wrap for increased r value. To secure the foam use two inch cap nails.

With budgets tighter than ever now contractors and do it youselfers are tearing off the original siding and installing a thin foam board underneath claiming it will improve the energy efficiency of the property. That being said the foam should be put on first and left untaped. 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. Vinyl siding can be installed directly over wall sheathing wood siding or stucco.

In order for insulation to really do its job it needs to be in direct contact with what it is insulating. 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. Contoured insulation that is permanently adhered to vinyl siding. And just like flat insulating sheathings and fanfolds insulated siding also levels the wall for a better looking siding job.

But herein lies the problem. Many people install vinyl siding or concrete board sding to improve the look and value of their home. Some people use roofing nails but if a strong gust of wind gets under the siding it may not hold. This will help your house wrap perform better and if you re already siding your house you may as well include it as installing it later will require a complete re siding.

The nails have a plastic cap that keeps them from damaging the foam. Certainteed vinyl siding with the correct rigid foam board backer makes this house look great. Apply sealant around windows doors and trim. By doing so however you miss out on the opportunity to add add energy savings to the project.

Tyvek under 1 4in foam for vinyl siding. Similar to blown in insulation insulated vinyl siding provides r value for improved energy efficiency. Below are some of the design details along with the benefits. Fit the rigid foam insulation snugly and seal all seams with the specialized tape.