Do I Need Foam Under Vinyl Siding

To secure the foam use two inch cap nails.

Do i need foam under vinyl 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. 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. 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. Below are some of the design details along with the benefits.

Apply sealant around windows doors and trim. 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. 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. Some manufacturers of vinyl siding do not recommend the use of drop in backers with certain vinyl siding configurations.

As an alternative installation of specific types of drop in contoured foam underlayments for various styles of vinyl siding are available. Contoured insulation that is permanently adhered to vinyl siding. Vinyl siding can be installed directly over wall sheathing wood siding or stucco. Vinyl siding must never be applied directly to studs without sheathing.

Insulated vinyl siding is standard vinyl siding with a backing of solid rigid foam insulation. Similar to blown in insulation insulated vinyl siding provides r value for improved energy efficiency. This detail is used with both new construction and also with renovation work. If they use a backer board at all contractors will often call it and sell it as insulation board.

But herein lies the problem. 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. How to install rigid foam under siding. Some people use roofing nails but if a strong gust of wind gets under the siding it may not hold.

And just like flat insulating sheathings and fanfolds insulated siding also levels the wall for a better looking siding job. Fit the rigid foam insulation snugly and seal all seams with the specialized tape. By doing so however you miss out on the opportunity to add add energy savings to the project. But insulated vinyl siding has one unique feature.