Mix a solution of.
Green algae on house siding.
Yellow stains mean you probably have damaged insulation or deteriorating sheathing behind the siding.
Cover any electrical outlets on the exterior of the home with duct tape.
You re most likely to see green stains on siding that is inadequately ventilated.
Set the nozzle on medium force and begin at the.
Black stains are usually a sign of mildew algae mold or fungus.
The algae may appear brown or green in color and remain damp diminishing the appearance of your home and spreading out over time.
Unlike mold this type of growth is mainly cosmetic and can be removed using minimal force and a few basic materials.
How to remove algae from siding 1.
Spray down the siding with plain water from the garden hose.
While it is not uncommon to see homes with an accumulation of green stuff it is important to take care of it in a timely fashion.
Green stains are almost always the result of algae or moss.
The green stuff on your siding is more than an eyesore.