Soak the shingles with water.
How to power wash your roof.
For every part water combine 0 05 part mild dish or laundry detergent.
Pressure washing in which highly pressurized water is sprayed on the roof to remove any mold algae dirt or grime and chemical cleaning sometimes called soft washing in which chemicals are the main thing that are removing those harmful things from your roof.
Never pressure wash your roof if you have asphalt shingles.
Most contractors don t recommend pressure washing or power washing a roof.
How to prepare your roof for pressure washing 1.
Use a sprayer attached to garden hose that s filled with equal parts chlorine bleach and water.
This keeps the solution from drying out immediately after application.
The power of a pressure washer can damage the shingles on your roof so it s important that you select the proper spray tip.
Of laundry strength liquid chlorine bleach and water.
For any areas that don t wash away with pressurized water fill a bucket or other container with water.
Test the power washer on a.
Starting from the bottom carefully wet the shingles.
Remove debris and any obstructions from the gutters and make sure that the water will drain freely.
Instead soft washing with a garden hose is least likely to chip dent or crack the tiles or panels.
The two main methods for roof cleaning are.
Once you squeeze the trigger the powerful recoil on the spray wand can throw you off balance and off of a ladder.
Start with a medium pressure spray pattern and adjust from there accordingly.
Use low pressure to spray it clean.
Mix water and mild detergent for stubborn areas.
Bring your garden hose or water sprayer up to the roof.
Not to mention using a pressure washer from a high place is dangerous.
This is because the water comes out too forcefully and can damage the material.
Always stand on a dry area of the roof as wet shingles can be very slippery.
This is the best way to clean a roof if you have asphalt shingles.