Grey Roof Shingles Turning Black

Thus elimination of roof algae may reduce roof fungus and roof mildew accumulation.

Grey roof shingles turning black. The color helps to retain more heat in the home. Leaves twigs and tree bark roof algae stains are seen in nearly eighty percent of the united states in various degrees. It is not uncommon for roof shingles to turn black over time. See proximate cause roof shingle stains types of roof stain by color location probable cause and.

If you live in a humid area of the country you ve probably seen unsightly dark streaks on asphalt shingle roofs. The algae will worsen and become more noticeable each year trapping moisture and causing premature shingle aging and granule loss. Why does this algae appear to be black. Black roof shingles do an excellent job of absorbing the heat from the sun each day.

This is what makes those unattractive black streaks on your roof. See debris staining roof debris and. 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. List of the pros of black roof shingles.

Roof shingles are exposed to a lot of wear and tear as extreme heat sun wind and precipitation come into contact with them. Gloeocapsa has the ability to form a protective darkly pigmented outer coating that shields the algae from damaging uv rays. The most common culprit is actually a blue green algae known as gloeocapsa magmathat is spread by airborne spores. As the blue green algae accumulate they develop a dark hardened outer coating which results in the black stains you see.

Although algae can be found on all types of roofing it tends to be most common on asphalt shingles. The algae feed on the limestone in shingles. Even the thermal energy with cloudy skies gets picked up with this installation.