Grey Roof Shingles Turning Black

Although algae can be found on all types of roofing it tends to be most common on asphalt shingles.

Grey roof shingles turning black.

See debris staining roof debris and. Even the thermal energy with cloudy skies gets picked up with this installation. So will removing loose debris from your roof shingle deck and gutters. See proximate cause roof shingle stains types of roof stain by color location probable cause and.

Gloeocapsa has the ability to form a protective darkly pigmented outer coating that shields the algae from damaging uv rays. 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. The algae feed on the limestone in shingles. Black roof shingles do an excellent job of absorbing the heat from the sun each day.

When that happens it is generally caused by mildew algae mold or dirt stains. Thus elimination of roof algae may reduce roof fungus and roof mildew accumulation. Why does this algae appear to be black. This is what makes those unattractive black streaks on your roof.

List of the pros of black roof shingles. The color helps to retain more heat in the home. Though often attributed to an accumulation of dirt defective shingles mold or mildew. The algae will worsen and become more noticeable each year trapping moisture and causing premature shingle aging and granule loss.

The most common culprit is actually a blue green algae known as gloeocapsa magmathat is spread by airborne spores. It is not uncommon for roof shingles to turn black over time. If you live in a humid area of the country you ve probably seen unsightly dark streaks on asphalt shingle roofs.