Why Does Vinyl Siding Mildew

Your standard household whitener.

Why does vinyl siding mildew.

Even though vinyl is extremely hardy and durable as an exterior siding for your home mildew will form on it in areas that are in the shade or where the vinyl is exposed to moisture on an ongoing basis. Stains the same color as your sidingare typically caused by water streaming down siding due to damaged or misaligned gutters. Stains on vinyl siding. Rust colored stainsare usually a sign that nails in the siding are rusting.

Because it is an exterior product vinyl siding can accumulate a host of dirt grime and stains on account of things like pollen bird and insect droppings spider webs and rust. These leaks can get behind your siding and eventually cause mildew or mold. This may or may not mean you have excess moisture leading to mildew. Clogged gutters can lead to mildew growth because they will leak rainwater on specific areas of your siding.

You re probably wondering how mildew and algae can survive on plastic or vinyl siding. The mildew and algae are feeding on sugars dust dirt or other things that are attached to the siding. Not only does that make the siding look unclean but it can also lead to mildew because fungus often feeds on dirt and dust. It appears to make mildew vanish but on porous surfaces such as wood or vinyl siding chlorine evaporates too quickly to get to the fungi s roots guaranteeing regrowth.

Continue reading below our video of the day tip 2 schedule regular inspections. One of the main reasons someone might see mildew or mold on vinyl siding is that dirt has accumulated on the surface. As rainwater and condensation accumulate on vinyl siding it can develop black spots of mold and mildew. When mildew gains a foothold homeowners often turn to diluted chlorine bleach sodium hypochlorite a k a.