What is roof fungus?

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. It needs heat, moisture and nutrients to grow.

How do I get rid of roof fungus?

The less expensive solution is to spray wash the roof with a 50 percent mix of water and bleach to get rid of the algae. (No pressure washers, please. They’re likely to damage the shingles.) Just be sure to wet your foundation plantings first, and rinse everything in clean water when you’re done.

What causes fungus on roof?

Common Factors. After discussing these fungi, there is an underlying factor they all have in common: Moisture, dampness, humidity. Excess amounts of moisture on your roof can lead to any one of these fungi infestations. Remember, the two most dangerous fungi are Mold and Mildew.

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Is a moldy roof dangerous?

Impact Of Roof Mould On Your Home

Roof mould causes structural damage to your home. As mould grows, it digests the surface it is attached to, breaking down the surface and weakening it like termites. If you don’t fix roof mould quickly, the damage can be expensive.

What does roof algae look like?

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.

How do I get rid of green mold on my roof?

You may spray wash the roof with 1 part water and 1 part bleach to clean off the algae. Let is sit for around 60 minutes before rinsing. If you find bleach and water solution weak for your moldy roof, you may use trisodium phosphate. Mix a cup of it for every gallon of water.

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.

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.

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How do I stop mold growing on my roof?

Most commonly algae and moss grow on roof surfaces that are shaded and remain humid. Cutting off tree branches that overhang the roof and block sunlight will surely help keeping your roof algae and moss free. Keep the roof surface clean by blowing off leaves and fallen branches during seasonal maintenance.

How do I stop algae growing on my roof?

How to Prevent Algae Growth on Your Roof

  1. Trim The Trees. …
  2. Eliminate Standing Water. …
  3. Get Your Roof Washed Regularly. …
  4. Get A New Algae Resistant Roof. …
  5. Prevent Roof Algae Growth with New Shingles.

Can mold on roof make you sick?

Join us as we go over some of the dangers of mold and roof algae. No matter how you cut it, mold will always have a negative impact on your health. While many reports chronicle the affect of mold on those with allergy problems, the fact remains living in a mold infested home can make anyone sick.

What does mold look like on roof?

Mold growth can look like soot and dirt and be black, gray, brown, green or even white in color. While mold often appears as small black spots, it can also emerge white and thread-like.

How can you tell if you have mold in your ceiling?

How to tell if You Have Ceiling Mold

  1. Brown or gray ceiling discoloration.
  2. Visible mold growth (usually dark green, brown, or black)
  3. A musty odor near the area of the roof leak.


What causes algae on a roof?

Though often attributed to an accumulation of dirt, defective shingles, mold, or mildew; the most common culprit is actually a blue-green algae known as Gloeocapsa Magma that is spread by airborne spores. … Every time it rains, trace amounts of metals are washed down the roof, inhibiting algae growth.

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What is growing on my roof?

The most common culprit causing these unsighlty stains on asphalt roofs is a blue green algae called Gloeocapsa magma. … As the roof algae grows and decomposes, it holds moisture which accelerates its growth and the deterioration of your asphalt shingles.

What causes green algae on roofs?

Algae Growth

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. It needs heat, moisture and nutrients to grow. The sun and the humidity on your roof give it the first two.

Roofs and roofing