Green Algae On Roof

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Green algae on roof. We ll explain more of that in a bit. The most common class of roof algae is gloeocapsa magma a bacterium that eats water and expels oxygen. The process can take years. The more these microorganisms are apparent on your roof the more your roof is unable to reflect uv rays.

Some roofs also have regular green algae that comes from trees and things that are near the houses. The algae can cause black or gray streaks that seem to run down your roof. Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad. If the roof is covered with things like moss algae the.

All bets are off when the roof is dirty. The black stains are buildups of algae that can prevent the sun from burning off the bacteria. Blue green algae usually brings images of lakes and waterways clogged with algae causing damage to the ecosystem not a roof. Should i avoid chlorine bleach.

Well there s a way to clean that off as well. The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae gloeocapsa magma. Here in oregon mostly blue green algae grows on the outside of the house or on the roof shingles. The only way to take care of it is to use a high base ch.

However algae is commonly found on roofs across the usa and canada. They are more of an aesthetic issue since they make the roof look horrible. Here s what you do. Both of these algae can be cleaned from the roof however the green algae is far easier to remove than the black algae.

Roof algae generally have a black green hue. The way to clean off roof algae is to go ahead and mix up some oxygen bleach with water. As we said about green algae on roofs the presence of these black fungal or algal stains on the roof is sometimes an indicator that this roof area is in a shaded spot look for shade from trees or nearby buildings where you may want to be alert for development of moss or other roof problems but the level of damage from the black algae is probably low even less than that caused by lichens and certainly less than that caused by moss. Again i m talking about clean roofs.

The green and black algae in my opinion are not harmful to the actual roofing material because they do not develop roots. Algae grow most often on wood and asphalt shingles or concrete tiles especially if they do not get a lot of sunlight. The green color comes from chlorophyll which is the same substance that makes plants green. If you have green stains on your deck or siding it s probably due to either cholophyta algae green algae or a cyanobacterium related to gloeocapsa magma.

Blue green algae slowly eat up the limestone on your roof until it s gone. The unsightly dark stains that the bacteria creates aren t just eyesore but can also compromise the durability of your roof.