Even at low pressure a power washer can seriously damage shingles.
Chemical to clean roof shingles.
Sodium hydroxide must be used carefully in order to not damage the roof or be harmful to any surrounding plants.
Not for use on metal roofs or homes with out gutters any of these roof cleaning solutions will be effective for removing mildew moss roof algae etc from fiberglass asphalt shingles.
Mix the hot water bleach and detergent and pour into the garden sprayer.
Spray it across the shingles you wish to clean wait about 20 minutes then rinse them with water.
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Plus chlorine bleach is a corrosive agent that can damage metal roof flashings gutters and downspouts.
Clean shingles on a cool humid overcast day to ensure that the cleaner doesn t dry too fast on the roof.
It should be diluted with water in order to breakdown the chemical elements.
Another great roof shingle cleaner is sodium hydroxide or better known as lye.
Alternatively industrial roof cleaning chemical roof cleaner qse a work horse cleaner with black algae stain removing power qse.
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Cleaning asphalt shingles is an important part of protecting your roof.
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This is the best way to clean a roof if you have asphalt shingles.
Mix the hot water bleach and detergent in the bucket until the soap granules dissolve.
Today s homeowner states that algae stains can be removed by cleaning though they usually return.
Apply a storebought or diy cleaning solution to remove the moss.
While an occasional cleaning might not harm your roof repeated use of harsh chemicals or the erosive effects of pressure washing can damage or shorten the life of asphalt shingles.
It can lighten the color of your roof and bleach anything the overspray contacts.
Bleach is caustic to the roof and plants.
This chemical is commonly used in products like drain cleaner and oven cleaner.
Optionally add cup 177 5 ml of a non ammonia heavy cleaner such as tsp trisodium phosphate for extra cleaning power.
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Use a sprayer attached to garden hose that s filled with equal parts chlorine bleach and water.
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And the runoff harms plants.
Fill your low pressure agricultural sprayer with a specialized asphalt cleaning agent.
To stay safe suit up in long sleeves pants and safety goggles.
A home cleaner can be made with a quart 95 l of standard laundry bleach and a gallon 3 8 l of water.
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Of laundry strength liquid chlorine bleach and water.
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