Grey Roof Shingles Turning Black

Why does this algae appear to be black.

Grey roof shingles turning black.

See proximate cause roof shingle stains types of roof stain by color location probable cause and. As the blue green algae accumulate they develop a dark hardened outer coating which results in the black stains you see. The algae feed on the limestone in shingles. The most common culprit is actually a blue green algae known as gloeocapsa magmathat is spread by airborne spores.

So will removing loose debris from your roof shingle deck and gutters. The color helps to retain more heat in the home. Even the thermal energy with cloudy skies gets picked up with this installation. Gloeocapsa has the ability to form a protective darkly pigmented outer coating that shields the algae from damaging uv rays.

Although algae can be found on all types of roofing it tends to be most common on asphalt shingles. Black roof shingles do an excellent job of absorbing the heat from the sun each day. It is not uncommon for roof shingles to turn black over time. When that happens it is generally caused by mildew algae mold or dirt stains.

Roof shingles are exposed to a lot of wear and tear as extreme heat sun wind and precipitation come into contact with them. List of the pros of black roof shingles. Leaves twigs and tree bark roof algae stains are seen in nearly eighty percent of the united states in various degrees. Black brown or gray stains on roofing products due to debris left on the roof surface such as piles of leaves and organic waste from nearby trees.

See debris staining roof debris and. Thus elimination of roof algae may reduce roof fungus and roof mildew accumulation. If you live in a humid area of the country you ve probably seen unsightly dark streaks on asphalt shingle roofs.