Water Behind Vinyl Siding

While a water resistant house wrap is typically installed under the siding it is punctured by nails during the installation process contributing to leaks.

Water behind vinyl siding.

Vinyl siding must be able to move independently of the wall surface. If an installer uses a material such as incorrectly this only exacerbates the problem. Although vinyl is impervious to water when installed as directed by the manufacturer vinyl siding as a whole is not completely watertight. The exterior walls of your vinyl siding clad home consists of layers of different materials designed to keep your home dry and warm in the winter or.

How to waterproof osb behind vinyl siding. Vinyl siding is designed as an exterior cladding only and is supposed to be installed over other materials such as a weather resistant barrier. Inspect the area above the leak including both indoors and out. It s virtually impossible to completely seal any siding without additional materials.

Vinyl is a potentially leaky material and water trapped behind siding leads to decay and mold. Check to be sure weep holes are open along bottom of window openings. The most common causes of water damage behind vinyl siding include the following. How to prevent water from flowing under vinyl siding.

It is a misconception that vinyl siding doesn t need a water resistant barrier system. In this video this old house general contractor tom silva shows how to prevent water from leaking in behind vinyl siding. Lack of gutters installed on the top roof of the home. In terms of siding this means layering sheeting flashing house wrap caulking siding and trim.

Vinyl siding itself is waterproof and directs most water flow away from the exterior but even a small gap can allow water through.