The best way to clean a roof is to use a roof cleaning chemical and let it sit for awhile.
Safe way to clean roof in south florida.
Therefore low pressure roof cleaning is the safest and most effective way to clean a roof.
Here s how i do it.
This pressure will erode a surface layer causing it to be more porous.
Most roof and pressure cleaning services use high pressure power washing devices to remove these stains.
With most good cleaners that s all you need to do.
This method is stressful on your roof.
I mix up my cleaner in bug sprayer container and spray it all over the roof.
These black stains are called gloeocapsa magma a type of algae.
Never allow any contractor to use a south florida high pressure washer on your roof.
Instead of relying on high pressure to remove the algae and dirt we use soaps and tile roof cleaning chemicals specially designed to clean your roof the safest and most long lasting way possible.
Use a pressure washer which can loosen shingles and seriously damage your roof.
Just spray it on and leave it.
Use a sprayer attached to garden hose that s filled with equal parts chlorine bleach and water.
This is the best way to clean a roof if you have asphalt shingles.
Even some soft roof washing companies sometimes opt to use high pressure washers for small periods of time on certain areas of roofs.
Since pressure washing water does not kill the mold mildew and algae your roof will get dirty within 6 months.
Of laundry strength liquid chlorine bleach and water.
It s either a soft wash or it s a high pressure wash there are no in betweens 2.
It will rinse off the next time it rains.