What is Roof Algae? The black mold-like stains and streaks that appear on roofs, particularly light-colored asphalt shingles, is actually a blue-green algae (Gloeocapsa magma). Commonly found in climates with warm, humid summers, it does no damage to the roofing, but it certainly does looks bad.
How do I get rid of green growth on my roof?
The most effective method of cleaning algae and moss from a roof is with a 50:50 mix of laundry strength liquid chlorine bleach and water. Apply with a sprayer and allow the solution to dwell on the roof surface for 15 to 20 minutes, and then rinse thoroughly with low pressure water.
What is the green stuff on my roof?
Known as black algae or roof mold, Gloeocapsa Magma is usually blamed on dirt accumulation, mold and mildew or defective shingles. It’s actually just a blue-green algae spread by airborne spores. It is easily spread and causes those colorful stains on so many roofs.
How do I stop algae growing on my roof?
How to Prevent Algae Growth on Your Roof
- Trim The Trees. …
- Eliminate Standing Water. …
- Get Your Roof Washed Regularly. …
- Get A New Algae Resistant Roof. …
- Prevent Roof Algae Growth with New Shingles.
What causes green moss on roof?
What causes moss growth? Shaded areas exposed to frequent damp, cool weather will quickly encourage moss to grow on your roof. The presence or absence of sunlight dictates the amount of moss or algae growth. … Furthermore, moss likes to grow on cement and can agitate the bond between ridge/apex tiles and your roof.
Is it bad to have moss growing on your roof?
No matter whether you have cedar shakes, tiles, or composite shingles, moss is bad for your roof! … As it grows it can push under shingles, tiles, and shakes, pushing them up and creating damage to your roof. Leaks – The damage to your roof caused by moss growth can lead to holes, thin spots, and eventually leaks.
Should you clean moss off your roof?
To avoid expensive repairs, moss should be removed from your roof tiles quickly if it is covering a significant area of your roof. Avoid pressure washing your roof to remove moss, as this could cause damage to the tiles and lead to the drenching of your roof interior.
What does algae look like on a roof?
Most often, roof algae will appear as some type of discoloration to roofing materials. You may notice black stains or streaks, or a blanket of green mossy growth. Roof algae can also look like spots of mold – leading to the common misconception. … Green or white spots.
How do I clean my roof myself?
of laundry strength liquid chlorine bleach and water. This is the best way to clean a roof if you have asphalt shingles. After spraying the roof with the mixture, allow it to sit on the surface for 15 to 20 minutes before rinsing thoroughly with clean water.
Why is lichen growing on my roof?
Lichen holds moisture in place against surfaces, which speeds up normal wear and tear. When this surface moisture freezes in cold temperatures, it can lead to frost damage to roof shingles and other exterior surfaces. This can cause your roof shingles to bend, warp, and even separate from each other over time.
What does algae do to a roof?
Roof Algae and Asphalt Shingles
Blue-green algae slowly consume the limestone over time. The more dark stains these algae create, the more your roof loses its reflective ability. The roof will absorb more heat from the sun which will radiate to the house, causing higher cooling expenses.
What is the white stuff on roofs?
When driving by a neighbor’s house, have you ever wondered, “Why is there white powder on their roof?” In short, it is known as zinc sulfate powder which is used to deter roof moss. Zinc deterrents often come in two forms, a zinc strip, or zinc sulfate powder.
Does moss on roof die in winter?
Unfortunately moss won’t die during the winter. During dry spells it goes dormant until conditions improve. This means if you have moss on your roof the best time to take care of it is now.
What does moss on your roof mean?
If you have moss on your roof, it’s likely because your roof is shaded by trees or other structures, allowing moisture to linger and moss to grow. Moss is a non-vascular plant that absorbs water through its leaves instead of roots.
Can I scrape moss off my roof?
If your roof has sprouted a moss infection, you can remove it before it becomes serious enough to impact the performance of your roof. Moss is tough and typically you will not be able to remove it by hand. However, you can use a chemical solution to loosen the moss without damaging the shingles.