Algae On My Siding

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.

Algae on my siding. Last weekend i mixed up some oxygen bleach to clean algae from my lower deck and from the deck railing. Algae is found on siding that is shaded and stays damp. This is an issue with homes that don t have a proper weather barrier installed underneath the siding which is common in older homes as well as homes where the siding was not properly installed. Will algae harm your siding.

Vinyl siding can provide the exterior of your home a fresh clean appearance and requires much less maintenance than paint. Fortunately algae on vinyl siding will not affect the function of your siding or cause it decompose. The algae may appear brown or green in color and remain damp diminishing the appearance of your home and spreading out over time. Maintenance is the first step to preventing the build up of moss algae and mold.

While algae stains on exterior walls are principally a cosmetic concern and can be cleaned using scrubbing mild soaps or more aggressive tsp substitute cleaners or detergents there may remain a hidden problem. Unlike mold this type of growth is mainly cosmetic and can be removed using minimal force and a few basic materials. However if the algae is left to flourish it could permanently stain lighter colored siding with unsightly green brown or black spots. I simply dissolved the powder in warm water poured it into a simple garden hand pump.

However vinyl siding that is left damp can result in the growth of unsightly algae. Algae on vinyl siding. Algae growth is most common in areas that are shaded and due to the lack of sunlight remain damp for longer periods of time after it rains. Any building wall that stays damp and shaded may be at higher risk for hidden insect or rot damage.

How to remove algae from siding 1. 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.