How do I get the black stuff off my roof?

A mixture of trisodium phosphate (TSP), bleach, and water will also remove stains. Oxygen bleach lightens stains as well and is less harmful to the environment, but it doesn't produce as immediate or dramatic an effect as chlorine bleach. Roof cleaned with oxygen bleach (left) and chlorine bleach (center).
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What is the black stuff on my roof?

Answer. Those black streaks on your roof shingles are most likely an algae called gloeocapsa magma, or as it is more commonly referred to, a blue-green or black algae. Algae is a solid deposit of spores and dirt, another form of mold.
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How do you remove black mold from roof shingles?

While wearing protective rubber gloves and a breathing mask, carefully pour ¼-part chlorine bleach into a clean bucket with ¾-part water. Next, put a tablespoon of trisodium phosphate to the bleach solution. Pour the bleach solution into a pump sprayer. Generous spray the moldy roof shingles with the solution.
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Will bleach damage asphalt shingles?

No, bleach will not cause discoloration in your shingles, or asphalt shingles.
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How do you clean mold off a 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.
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How to remove those ugly black stains on a roof with Roof Sparkle



Can I use bleach on roof shingles?

Bleach can effectively clean roof shingles and remove even the toughest stains. Keeping roof shingles clean will not only enhance the overall look of your home, but can also protect the shingles from damage caused by moss and mildew.
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Why is there black mold on my ceiling?

Mold on the ceiling is caused by moisture that has no where to go. Mold loves moisture. Steam from hot showers and bathtubs rises to the ceiling, and without proper ventilation it can settle there. If the moisture remains too long, mold spores begin to grow.
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What is the best chemical to clean a roof?

Experts agree that sodium hydroxide is the product of choice for homeowners who want to clean their concrete, tile, and the materials of their slate roof. Another chemical solution that can be used for cleaning your roof is sodium hypochlorite. This substance turns into salt when all traces of water have evaporated.
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How do you clean a roof with bleach?

Mix equal parts of bleach and water in the ratio of 50:50 to form a bleach cleaning solution. Pour the solution in a garden hose sprayer. Climb the roof using a ladder and spray the shingles with the solution. Leave the solution on the surface of the roof shingles for 15 to 20 minutes.
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Does cleaning your roof damage it?

Professional Cleaning

Standard, high-pressure washers can damage your roof when you're trying to clean it. It's important to use special equipment that does not harm the shingles and cause them to be torn from the high pressure. Reputable roof cleaning companies will also use a biodegradable cleaning solution.
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What is the best way to remove moss from a roof?

Hose off the area with plain water, spraying at a downward angle. Then, use a long-handled soft-bristle scrub brush to remove the moss from the roof, scrubbing from the top down to avoid lifting shingles.
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Will vinegar clean roof shingles?

Vinegar will not hurt roof shingles and is the best way to clean asphalt shingles. Vinegar bough at the store will have different concentrations of acetic acid. 5% is adequate for most roof damage, although you can go as high as 25% for very stained roofs.
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Can you use wet and forget on roof?

Roof cleaning can be made easier with a once a year, no-fuss application of Wet & Forget Xtreme Reach™ Hose End. This outdoor cleaner is safe to use on virtually any type of roof and will help to keep your roof free of moss, mold, mildew, and algae all year long.
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Should I power wash my roof tiles?

Using a pressure washer – not recommended

Using a high powered pressure washer could cause more damage than good, because the strength of the water stream can remove the finish of the roof tiles.
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How do I clean my roof without a pressure washer?

Do: Use a sprayer attached to garden hose that's filled with equal parts chlorine bleach and water. of laundry strength liquid chlorine bleach and water. This is the best way to clean a roof if you have asphalt shingles.
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Is it OK to pressure wash a roof?

NEVER aim your pressure washer up the roof, as it can push water under the shingles. Spraying water under your shingles can both tear off the shingles and force water under them and into your home.
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What is used to soft wash a roof?

When professionals think of soft washing roofs and siding, the top cleaning chemical used is a professional-grade 12.5% sodium hypochlorite, or bleach, mixed with water.
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How harmful is black mold?

There's no link to inhaled Stachybotrys chartarum mycotoxins and deadly diseases. But there are risks for people with allergies, asthma, and other hypersensitivities. There is no evidence that black mold causes symptoms such as fatigue, memory loss, an inability to focus, or a headache.
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Can you paint over mold?

Using mold-resistant paint works to prevent mold growth, but it won't kill it once it's started to grow. You can paint over mold, but it will always reappear if you don't stop it in its tracks. Mold can cause severe respiratory issues for your family and pets.
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How do you get rid of mould permanently?

Simply mix one part bleach to four parts water. Using a damp cloth gently scrub and wipe the mould until the mould is gone. Once finished, dry the area well with a soft cloth.
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