You re most likely to see green stains on siding that is inadequately ventilated.
Green algae on house siding.
Spray down the siding with plain water from the garden hose.
Black stains are usually a sign of mildew algae mold or fungus.
Unlike mold this type of growth is mainly cosmetic and can be removed using minimal force and a few basic materials.
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.
How to remove algae from siding 1.
Mix a solution of.
It is actually airborne algae that can cause long term damage to the surface.
The algae may appear brown or green in color and remain damp diminishing the appearance of your home and spreading out over time.
How to remove green from siding step 1.
Cover any electrical outlets on the exterior of the home with duct tape.
Set the nozzle on medium force and begin at the.
Yellow stains mean you probably have damaged insulation or deteriorating sheathing behind the siding.