The average garden hose sprays water at 40 to 80 psi.
Roof pressure cleaner.
Make sure to build up pressure.
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Instead spray down the roof with a cleaner that kills mold and moss or apply a 50 50 mixture of bleach and water in a pump sprayer and let the moss die on its own.
See typical tasks and time to pressure wash roof along with per unit costs and material requirements.
Product overview the m 1 deck and roof multi purpose cleaner is designed to clean the dirtiest pine cedar redwood cypress and birch decks or siding.
Chlorine bleach will effectively kill any mold that is starting to grow and loosen up many of the stains.
Start with a medium pressure spray pattern and adjust from there accordingly.
Never pressure wash your roof if you have asphalt shingles.
Always stand on a dry area of the roof as wet shingles can be very slippery.
Instead soft washing with a garden hose is least likely to chip dent or crack the tiles or panels.
The water pressure will remove the granules that are important for protecting your roof.
With our non pressure roof cleaning process we guarantee your roof will stay clean for a minimum of two years.
Bleach is the best way to clean roof shingles.
Not to mention using a pressure washer from a high place is dangerous.
To use this roof shingle cleaner correctly you should mix one part of bleach with one part of water.
Get fair costs for your specific project requirements.
Once you squeeze the trigger the powerful recoil on the spray wand can throw you off balance and off of a ladder.
Pressure washers use 1 300 to 2 800 pounds per square inch to strip dirt moss and even paint from a surface.
When you apply the bleach do not immediately wipe it off.
If algae or mildew returns we will come back and clean it for free.
Traditional pressure washing will destroy and take away the life span from your roof.
By comparison a fire hose sprays at 150 to 300 psi.
Use low pressure to spray it clean.