Green stains on siding are usually the result of mold mildew algae or moss.
Green stuff on house siding.
The tiny organisms that grow on the roofs and walls of houses can be moss algae lichen or mildew or mold two terms often used interchangeably.
Stubborn mold may require a mixture of water and chlorine bleach.
These stains occur naturally over time.
Green or brown or black algae growth.
Make sure there are not irrigation nozzles facing your home.
When house siding begins to turn green it diminishes the exterior appearance of the home.
Fortunately siding can be cleaned to remove not only green stains but other dirt and stains that may be taking over the homes exterior.
All can create greenish blotches on siding.
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.
It is actually airborne algae that can cause long term damage to the surface.
Unlike mold this type of growth is mainly cosmetic and can be removed using minimal force and a few basic materials.
If it holds water you may want to create a small trench to drain the area or install some drainage.
How to remove algae from siding 1.
Simple green offers an environmentally friendly cleanser that is specially formulated for use on vinyl and aluminum siding stucco terra cotta roof tiles and painted wood.
Areas with a lot of sun will be more likely to grow the green stuff.
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Scrub siding with a stiff brush moving from side to side over green stains.
Water if the area it is growing is constantly damp there is your problem.
Algae is found on siding that is shaded and stays damp.
In our photo at above left shows a common condition that is found on many types of building siding.
Check to see if the area holds water.
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The algae may appear brown or green in color and remain damp diminishing the appearance of your home and spreading out over time.
The green stuff on your siding is more than an eyesore.