Green Algae On House Siding

Black stains are usually a sign of mildew algae mold or fungus.

Green algae on house siding.

Green stains are almost always the result of algae or moss. 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. Set the nozzle on medium force and begin at the. Unlike mold this type of growth is mainly cosmetic and can be removed using minimal force and a few basic materials.

You re most likely to see green stains on siding that is inadequately ventilated. It is actually airborne algae that can cause long term damage to the surface. The green stuff on your siding is more than an eyesore. Yellow stains mean you probably have damaged insulation or deteriorating sheathing behind the siding.

Mix a solution of. How to remove green from siding step 1. Spray down the siding with plain water from the garden hose. The algae may appear brown or green in color and remain damp diminishing the appearance of your home and spreading out over time.