They spray it on the roof and wait for it to dry and then re apply it several times as needed.
How to clean your roof stains.
Make your shingles last longer.
Algae can be killed and the stains removed using chemical cleaners though they usually return over time.
Mix your cleaning solution.
While specialized eco friendly roof cleaners are available they are a little more.
Set the garden hose on the spray setting with the highest pressure water and hold the nozzle close to the shingles when rinsing.
Rinse the section of the soffit you just scrubbed washing away all of the dirt and rinsing enough to clear the surface of detergent and bleach.
Bring your garden hose or water sprayer up to the roof.
How to clean roof stains wash your shingles where the sun doesn t shine.
Out on location darren shows yet another use for one of his professional detailing.
Fit a squeeze trigger nozzle onto the end of your garden hose turning it clockwise to tighten and turn the pressure on high.
Soak the shingles with water.
Use a garden hose to rinse the stains and cleaning solution from the roof.
Allow the oxy bleach mixture to sit on the shingles for about 15 minutes.
Rinse from the top of the roof down to avoid re staining the shingles with the dirty water.
Cleaning moss and algae 1.
Spray your cleaning solution.
Black streaks on the north and west facing and shaded.
Allow the oxygen bleach to sit on the shingles for 20 minutes.
Starting from the bottom.
Rv detailing tips that shows how to simplify your roof cleaning efforts.
Use a cleaner specially made for killing algae or by spraying a mixture of one part bleach to four parts water with tsp trisodium phosphate or other detergent added in a garden pump up sprayer.
This will remove any stains that were loosed up by the oxygen bleach.
Here s how to clean the.
Set the nozzle at the highest pressure setting and hold it 12 inches from the shingles.