Attach the sprayer to a machine and take it onto your roof.
How to clean cedar roof.
Avoid holding the nozzle of your cleaning rod near your shingles and apply the spray from above the shingles rather than from below.
The cedar bureau recommends using a solution of 1 part bleach to 3 parts water.
A soft wash also known as a non pressure wash is where you take low pressure water and spray down a surface.
In addition they have the potential to retain moisture which will allow dow wood destroying fungus to begin growing.
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.
Use a 12 volt pump system with pressure of about 60 psi.
Conduct a soft wash on your roof.
One of the first steps in cedar roof maintenance is to clean it of any debris.
Apply it with a pump sprayerlet it sit for about 15 minutes before rinsing it off with with a garden hose.
Be sure to keep the hose pointed downward to avoid forcing water up behind the shingles.
Avoid using pressurized cleaning equipment with too much pressure.
This includes things like fallen leaves conifer needles mosses and lichens.
This kind of debris can make it harder for any water runoff of the roof.
Cedar shingles can be easily damaged or torn loose by high pressure cleaning equipment.
Step 3 cleaning with a liquid cleaner.