How To Remove Black Algae From Roof Shingles

That way whenever it rains some of the metal molecules will wash down the roof and kill any algae trying to regain a foothold on your shingles.

How to remove black algae from roof shingles.

You could use regular household bleach to remove the algae from your roof. Common algae that form on roof surfaces including asphalt shingles and roll roofing include the algae shown above and gleocapsa magma a species that generally appears black on the roof surface but under some lighting conditions even on the roof gleocapsa magma can appear as a blue green color as might other algae genera species. Roof algae generally have a black green hue. This is the only safe way to effectively remove algae and moss from roof shingles.

Before applying the cleaner spray the roof with water to cool it down. How to properly remove black streaks from your roof the correct method of attacking gloeocapsa magna is with low pressure or non pressure washing using a special solution that includes sodium hydrochlorite and copper sulfate. Some homeowners also try to get rid of algae by using bleach. However the force of the water can cause your shingles to lose their protective granules.

The most common class of roof algae is gloeocapsa magma a bacterium that eats water and expels oxygen. You may think you have roof algae when really you have moss mildew or mold. The solution almost immediately kills the bacteria and washes away the stains. You might think that pressure washing is the best way to remove algae.

Then spray the cleaner onto the shingles photo 1. Algae grow most often on wood and asphalt shingles or concrete tiles especially if they do not get a lot of sunlight. To remove the algae from asphalt shingles you have a few options. I covered our asphalt shingle roof about five years ago with white 50 year guaranteed shingles that had algae prevention treatment but now the entire north side of our roof is black with algae i bought the shingles from lowe s in marianna florida.

That ll prevent the cleaner from drying out too quickly. I am really disappointed the treated shingles didn t work. Spray wash the roof with a 50 mix of water and bleach to get rid of the algae. No pressure washers please.

Pour it into a pump sprayer strap yourself into a full body harness tie it down and climb to the roof.