To clean your cedar you will need a mix of the appropriate cleaning solution and water.
How to clean cedar roof.
Prepare enough of the mixture to cover the entire roof.
Walk up near the apex of your roof and begin to spread the cleaner across the shingles using right and left motions.
Apply it with a pump sprayerlet it sit for about 15 minutes before rinsing it off with with a garden hose.
Cedar shingles can be easily damaged or torn loose by high pressure cleaning equipment.
Avoid using pressurized cleaning equipment with too much pressure.
Attach the sprayer to a machine and take it onto your roof.
Step 3 cleaning with a liquid cleaner.
Avoid holding the nozzle of your cleaning rod near your shingles and apply the spray from above the shingles rather than from below.
A soft wash also known as a non pressure wash is where you take low pressure water and spray down a surface.
Cleaning away the age is the first step in caring for cedar shingles.
The cedar bureau recommends using a solution of 1 part bleach to 3 parts water.
In addition they have the potential to retain moisture which will allow dow wood destroying fungus to begin growing.
This kind of debris can make it harder for any water runoff of the roof.
Be sure to keep the hose pointed downward to avoid forcing water up behind the shingles.
Use a 12 volt pump system with pressure of about 60 psi.
This is important as standard high pressure power washes might damage cedar shingles.