Mold and algae are not the same.
Why doesnt roof algae grow under windows.
Getting your roof professionally cleaned at least once a year will help keep that bacteria under control and get rid of it so that it doesn t become a breeding ground for algae.
Common algae that form on roof surfaces including asphalt shingles and roll roofing include the algae shown above and gleocapsa magma a species that generally appears black on the roof surface but under some lighting conditions even on the roof gleocapsa magma can appear as a blue green color as might other algae genera species.
Known as black algae or roof mold gloeocapsa.
Read more below to find the causes of why mold and algae grow on your roof and how to remove it.
Given the right conditions moss can grow almost anywhere on a home s exterior including roofs siding masonry and window glass.
Algae and other microscopic growths on the roofs are an age old problem but the solution is on the mind of both roofing contractors and homeowners.
Algae growth is mainly a cosmetic issue and can resolve with a bit of scrubbing using a mild soap.
Algae grow most often on wood and asphalt shingles or concrete tiles especially if they do not get a lot of sunlight.
Humidity moisture and limited sunlight provide moss with the necessary conditions to flourish.
You may think you have roof algae when really you have moss mildew or mold.
In order to prevent algae growth on your windows the right approach would be to check your windows for any leaks.
Vinyl siding stain diagnosis.
Distinguishing the type of stain found on siding is useful in deciding on the cause and thus the cure or prevention of staining.
Roof algae generally have a black green hue.
Algae may appear green or brown and will stay damp on your siding.
They also appear specifically on the north side of the roof.
The black streaks on your roof don t appear for everyone they usually only appear on roofs in humid parts of the country.
No matter how diligent you are there will always be some bacteria that will manage to get on the roof.
Certain conditions must exist in order to notice algae on your windows.
The most common class of roof algae is gloeocapsa magma a bacterium that eats water and expels oxygen.
This article discusses common causes of stains or discoloration found on vinyl building siding.
If there is no standing water on the roof the algae won t be able to grow and your roof will be safe from mold and algae.
Get your roof washed regularly.
If you have drafty windows then it s possible that water can leak inside your window panes which can cause algae to grow inside.
Siding sealants can help prevent algae growth.
Algae may grow due to dirt and dust attached to your siding.
The usage of copper as the prime hindrance to algae growth is picking up speed and picking up clients for the alert contractor who can increase sales and charge a small premium for a growing need.
Algae can grow in moist shaded areas so if a homeowner has trees hanging over their roof tell them to trim them back to let the sunshine warm and dry the roof.
Copper or zinc retards the growth of algae which is why stains are not usually present below metal roof flashings.
Left to grow moss spreads to window frames and siding where it causes damage to the substrate.
