Vinyl Siding Water Barrier

Vinyl siding has always been designed as an exterior cladding not a water resistive barrier.

Vinyl siding water barrier.

Another benefit of quality vinyl siding is that it is highly water resistant when correctly installed. Installation of a water barrier behind this siding combined with proper window and door flashing would significantly reduce the risk of future building damage. As a result it can contribute to improved building durability by helping to protect homes against damaging wind and rain that can penetrate the exterior cladding. Furthermore i reported water seeping in on the top of the front door way where the the front of the house is brick faced.

Before the vinyl siding is installed on the house a waterproof underlayment called house wrap must be placed on the osb to prevent water from seeping through the siding and reaching the osb. Vinyl siding is one of if not the most popular exterior cladding for residential homes. Although vinyl is impervious to water when installed as directed by the manufacturer vinyl siding as a whole is not completely watertight. Dupont tyvek homewrap is the original house wrap incorporating unique material science that helps keep air and water out while letting water vapor escape.

Sizing up vinyl siding the requirement for a moisture barrier beneath vinyl siding u s. Vinyl siding is designed to allow the material underneath it to breathe. Requirements for moisture barrier beneath behind vinyl siding. This article series discusses best practices construction details for building exteriors including water and air barriers building flashing products installation wood siding material choices installation vinyl siding stucco exteriors building trim.

I did not see anything wrong with the vinyl siding on the the back of the. Therefore it is not a watertight covering. How to prevent water from flowing under vinyl siding. The vinyl siding on the home does not have a weather resistant barrier as a second layer of protection.

It is relatively easy to care for has a decent lifespan comes in a variety of colors and is very affordable. Engineered for lasting performance and superior resistance to high winds great barrier offers peace of mind to contractors and homeowners alike. Because of its design and application it provides a supplemental rain screen. This article explains the need for water resistant barriers on building exterior walls and explains the concept of a rain screen.

I looked closely at the windows above on the secound floor to see if they had been channeling water into the wall cavity. The manufacturer of the siding recommends it as well as good building practices but unfortunately the state of nc home inspector license board does not allow me to tell you that this is or is not against the building code.