Grey Roof Shingles Turning Black

The algae will worsen and become more noticeable each year trapping moisture and causing premature shingle aging and granule loss.

Grey roof shingles turning black.

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. The color helps to retain more heat in the home. As the blue green algae accumulate they develop a dark hardened outer coating which results in the black stains you see.

If you live in a humid area of the country you ve probably seen unsightly dark streaks on asphalt shingle roofs. Gloeocapsa has the ability to form a protective darkly pigmented outer coating that shields the algae from damaging uv rays. When that happens it is generally caused by mildew algae mold or dirt stains. 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. 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. Though often attributed to an accumulation of dirt defective shingles mold or mildew.

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. Leaves twigs and tree bark roof algae stains are seen in nearly eighty percent of the united states in various degrees. The algae feed on the limestone in shingles. See debris staining roof debris and.

Why does this algae appear to be black. 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.