Grey Roof Shingles Turning Black

Leaves twigs and tree bark roof algae stains are seen in nearly eighty percent of the united states in various degrees.

Grey roof shingles turning black.

When that happens it is generally caused by mildew algae mold or dirt stains. It is not uncommon for roof shingles to turn black over time. Though often attributed to an accumulation of dirt defective shingles mold or mildew. The algae feed on the limestone in shingles.

Thus elimination of roof algae may reduce roof fungus and roof mildew accumulation. The algae will worsen and become more noticeable each year trapping moisture and causing premature shingle aging and granule loss. Even the thermal energy with cloudy skies gets picked up with this installation. See proximate cause roof shingle stains types of roof stain by color location probable cause 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. Roof shingles are exposed to a lot of wear and tear as extreme heat sun wind and precipitation come into contact with them. Black roof shingles do an excellent job of absorbing the heat from the sun each day. Why does this algae appear to be black.

The color helps to retain more heat in the home. The most common culprit is actually a blue green algae known as gloeocapsa magmathat is spread by airborne spores. See debris staining roof debris and. This is what makes those unattractive black streaks on your roof.

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. So will removing loose debris from your roof shingle deck and gutters.