Vinyl siding is designed as an exterior cladding only and is supposed to be installed over other materials such as a weather resistant barrier.
Water leak behind vinyl siding.
Inspect the area above the leak including both indoors and out.
This is a normal condition of these siding products not present on hardboard fibercement board shingle type siding nor plywood sheet siding and is a reason that these siding.
How to prevent water from flowing under vinyl siding.
When siding is put back behind the gutter the lowest piece of flashing running down the pitch of the roof above must be fashioned to divert water into the gutter not behind the siding.
Wind blown rain entering the siding bottom edge vent drain openings present on most aluminum or vinyl siding can pass behind the siding through those openings.
Vinyl is a potentially leaky material and water trapped behind siding leads to decay and mold.
If an installer uses a material such as incorrectly this only exacerbates the problem.
Therefore it is not a watertight covering.
Using detailed examples and photos of leaky building siding siding stains ice or other leak clues for vinyl siding we illustrate the installation mistakes or subsequent siding damage that can cause troublesome even dangerous leaks into a building wall or wall.
Check to be sure weep holes are open along bottom of window openings.
Because of its design and application it provides a supplemental rain screen that enhances the water resistive barrier system by reducing the amount of water that reaches the underlying water resistive barrier.
It is possible for moisture and air leaks to enter through these fine lines and seams wreaking havoc behind the siding that you may not even notice until significant damage has already occurred.
It s virtually impossible to completely seal any siding without additional materials.
Siding leak diagnosis and repair.
If you do find such an area remove the siding and inspect the walls behind it to determine how the water is getting in.
In this video this old house general contractor tom silva shows how to prevent water from leaking in behind vinyl siding.
Leaks in other areas of the home besides windows and doors are not as common as they may be for homes with wood siding but they still may happen.
This article describes the causes of all types of leaks in building siding and wall coverings.
Despite the good qualities of vinyl it does pay to have extra insurance in the form of house wrap.
In terms of siding this means layering sheeting flashing house wrap caulking siding and trim.
