Removing Black Algae From Roof

Once on the roof the bacteria begin to feed on the limestone filler used to create the protective granules asphalt shingles are known for.

Removing black algae from roof.

The gloeocapsa magna bacteria makes its way to roof tops as algae spores carried by the wind squirrels birds and even insects. Moss is a thick organic growth. I have run into what looks like black roof algae on a fiberglass deck below a kynar painted metal roof the roof is ok in a coastal north carolina environment. Thanks for the tips on how to remove black algae stains from a roof.

Wet forget outdoor cleaner works with the wind and the rain to wash away green and black algae stains over time. It cleans up readily but comes back in 6 to 8 weeks. It penetrates black algae s defenses and removes the green algae that can grow on the shaded areas of your roof. Green algae on swing set before using wet forget.

Bleach will neutralize and kill algae off your roof and remove the black streaking. These roof invaders require a moisture rich environment usually. If you ve already removed the algae from your roof once and you want to make sure you don t get it again or if you re building a new house and you want to make sure that your roof doesn t get those black streaks from algae there are 2 things you can do to prevent the algae from forming. Black streaks on the north and west facing and shaded areas of your asphalt shingled roof can really wreck the appearance of your home.

Bill october 16 2011 at 4 27 pm. Mix up oxygen based cleaner with water in a five gallon bucket following the instructions. It must be diluted before applied and plants must be rinsed down. Algae is just a thin film of organic growth that can be removed by washing the roof with certified organic oxygen bleach.

Roof moss removal and algae tips. Roof moss removal usually requires a broom or heavy stream of water. Black stains on asphalt shingle roof caused by algae growth. How to remove algae from the roof.

The streaks look like mold but they re actually algae colonies that form in your shingles and feed on moisture and the limestone filler agents in the shingles. Removing the algae off your roof yourself. Copper strips prevent the growth of moss and algae. To clean an asphalt shingle roof to remove black algae stains.

The bacteria also photolyzes any moisture on the roof to produce oxygen. Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad. However this comes with risks. Bleach is corrosive and dangerous to plants and pets.

Moss is thick algae is paper thin.