Use a pressure washer which can loosen shingles and seriously damage your roof.
Roof shingles cleaning solutions.
Sodium hydroxide lye products on the other hand work better than bleach and are less harmful to vegetation.
Spray the cleaner on a section of roof and let it sit for about 15 minutes.
Use jomax roof cleaner and mildew stain remover on asphalt wood and composition roofs.
When you apply the bleach do not immediately wipe it off.
For extra cleaning power mix in a non ammonia heavy cleaner like tsp.
Pick a cool overcast day so the cleaning solution doesn t dry too fast.
Rust oleum zinsser jomax roof cleaner and mildew stain remover is a concentrate that quickly removes black streaks dirt and mildew stains from roof shingles.
There is a time when every roof gets moss mildew or agley due to sun rain and snow.
Alternatively industrial roof cleaning chemical roof cleaner qse a work horse cleaner with black algae stain removing power qse.
Clean shingles on a cool humid overcast day to ensure that the cleaner doesn t dry too fast on the roof.
A good efficient roof cleaning formula is 1 gal chlorox 1 gal water 4 oz of dishwashing detergent that doesn t contain ammonia and is safe to mix with bleach and 4 oz of sodium silicate same as sodium metasilicate often available in bags at auto parts stores sold as radiator flush.
Bleach is the best way to clean roof shingles.
Pour the mixture into the garden sprayer.
Kills mold and mildew on.
One part of proper roof maintenance is cleaning the shingles which you can do yourself in less than an hour.
Tile slate and metal non porous roofs.
So the algae colony gets right back to work.
Wet forget no scrub outdoor cleaner.
Bleach may kill the top layer of algae and lighten the stains but it doesn t kill the underlying algae.
Chlorine bleach will effectively kill any mold that is starting to grow and loosen up many of the stains.
Mix the hot water bleach and detergent in the bucket until the soap granules dissolve.
To remove it you can try wet forget no scrub outdoor cleaner.
Of laundry strength liquid chlorine bleach and water.
Life is dirty clean easy.
This is the best way to clean a roof if you have asphalt shingles.
Rust oleum suggests applying a second application of the jomax roof cleaner on moss or heavy mildew areas and from our experience with this product we feel if this roof cleaning solution is used this to clean anything beside very lightly stained or discolored roof growth you will have to apply several coats many more than what is suggested or leave the solution on the roof for a much longer period than the instructions explain.
Use a sprayer attached to garden hose that s filled with equal parts chlorine bleach and water.
To use this roof shingle cleaner correctly you should mix one part of bleach with one part of water.