While specialized eco friendly roof cleaners are available they are a little more.
How to clean clear roof stains.
Bring your garden hose or water sprayer up to the roof.
Spray your cleaning solution.
Removal make algae a thing of the past there are two methods for removing algae stains.
Mix your cleaning solution.
Rinse from the top of the roof down to avoid re staining the shingles with the dirty water.
For the many homeowners who want to return the roof to its original color there are two methods for dealing with a stained roof.
Never mix chemicals together.
Work slowly using even strokes.
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.
Set the nozzle at the highest pressure setting and hold it 12 inches from the shingles.
Soak the shingles with water.
Chemicals and metal strips.
Spray the roof with the diluted substance and let it sit for about an hour.
Vinegar bleach ammonia and salt will all effectively change the ph level of your roof allowing you to clean it.
How to clean roof stains wash your shingles where the sun doesn t shine.
Black streaks on the north and west facing and shaded.
Cleaning moss and algae 1.
Use a side to side motion and apply minimal pressure.
Allow the oxygen bleach to sit on the shingles for 20 minutes.
The chlorine bleach roof cleaning method roof cleaning contractors who use sodium hypochlorite chlorine bleach mix it in high concentrations with other chemicals such as trisodium phosphate also known as tsp.
Here s how to clean the.
Next use a pump sprayer attachment to apply the cleaning solution to your roof.
Make your shingles last longer.
Use only one of these substances mixed with water at a time.
Do shingles on your north west or other shaded roofs have streaky moldy stains.
If you don t you risk splotchy areas of clean and less clean shingles based on which areas got a better dose of solution.
Starting from the bottom.
Rub the cleaner gently over any stains.
Do not move the towel in a circular motion as this may damage the fabric or underlying structure.
Let the solution soak in for about 20 minutes then spray down the roof with water again to rinse it off.