Algae Growing On Siding

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Algae growing on siding. What causes algae and mildew to grow on siding. This moisture flows out the weep hole and works across the underside of the siding due to surface tension. You may have noticed a green growth on your vinyl siding or gotten an hoa violation letter notifying you that your siding needs to have the green growth cleaned off. Algae on vinyl siding occurs because organic materials such as dust dirt pollen bird droppings and spider webs accumulate on the siding and algae uses it as a food source.

So wood siding because it s organic will be especially susceptible to this issue. How to remove algae from siding 1. We even find this on the sunny side of homes. Some effective cleaners include oxygen bleach or trisodium phosphate.

Siding has small weep holes to allow moisture trapped behind it to escape. Unlike mold this type of growth is mainly cosmetic and can be removed using minimal force and a few basic materials. While vinyl and fiber cement are not organic substances they can both accumulate dust dirt and other small specks of natural materials. Rinse the first solution and.

The north exposure provides the perfect conditions for this organic. The algae may appear brown or green in color and remain damp diminishing the appearance of your home and spreading out over time. A small amount mixed with. To put it simply algae and mildew both grow in areas that are damp and organic.

Use a bristle brush attached to a long pole to apply the solution to your siding scrubbing hard to get the surface. But other forms of siding are not necessarily immune.