Do I Need Foam Under Vinyl Siding

Vinyl siding can be installed directly over wall sheathing wood siding or stucco.

Do i need foam under vinyl siding.

Some manufacturers of vinyl siding do not recommend the use of drop in backers with certain vinyl siding configurations. But herein lies the problem. Some people use roofing nails but if a strong gust of wind gets under the siding it may not hold. If they use a backer board at all contractors will often call it and sell it as insulation board.

To secure the foam use two inch cap nails. 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. By doing so however you miss out on the opportunity to add add energy savings to the project. 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.

And just like flat insulating sheathings and fanfolds insulated siding also levels the wall for a better looking siding job. Contoured insulation that is permanently adhered to 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 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.

But insulated vinyl siding has one unique feature. The nails have a plastic cap that keeps them from damaging the foam. 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. Fit the rigid foam insulation snugly and seal all seams with the specialized tape.

Below are some of the design details along with the benefits. Certainteed vinyl siding with the correct rigid foam board backer makes this house look great. Many people install vinyl siding or concrete board sding to improve the look and value of their home. How to install rigid foam under siding.

Similar to blown in insulation insulated vinyl siding provides r value for improved energy efficiency. Apply sealant around windows doors and trim. As an alternative installation of specific types of drop in contoured foam underlayments for various styles of vinyl siding are available. Vinyl siding must never be applied directly to studs without sheathing.