The algae may appear brown or green in color and remain damp diminishing the appearance of your home and spreading out over time.
Algae or moss on our siding.
Moss growth is especially common on the north side of homes as this surface receives the smallest amount of sunlight during the day.
Moss can grow on nearly any surface including house siding.
You re most likely to see green stains on siding that is inadequately ventilated.
Moss grows in dark or shady moist areas.
How to remove algae from siding 1.
For wood or aluminum siding combine one third cup powdered laundry detergent two thirds cups trisodium phosphate 1 quart bleach.
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.
Fortunately siding can be cleaned to remove not only green stains but other dirt and stains that may be taking over the homes exterior.
These stains occur naturally over time.
To 1 quart and use it in the same power washer as step 1.
Green stainsare almost always the result of algae or moss.
Shadows moisture variations that collect or don t collect dust on siding even roof leaks or air leaks through building walls can often be diagnosed by a close look at wall stain patterns discussed here.
Green stains on siding are usually the result of mold mildew algae or moss.
Black stainsare usually a sign of mildew algae mold or fungus.
Create a mix of bleach and water 1 tsp.
Yellow stainsmean you probably have damaged insulation or deteriorating sheathing behind the siding.
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.
Blend a moss killing solution appropriate for the siding material.
Maintenance is the first step to preventing the build up of moss algae and mold.