But of course if the roof is really bad i may have to walk the roof with a power washer but set at a very low pressure about 400 psi about 12 inches away.
How to spray roof from ground.
Then spray the cleaner onto the shingles photo 1.
That was 15 feet up.
Before applying the cleaner spray the roof with water to cool it down.
Liquid moss killers cover the roof more evenly than dry powders and they let you stay on the ground for the application.
If the staining is fairly light you can rinse off the cleaning solution with just a garden hose sprayer.
This can be done either while walking the roof or some hi tech equipment i have i can actually spray it from the ground without ever getting on the roof.
White acrylic reflective elastomeric roof coating 15 year limited warranty model 890327920 view the roof coatings 119 00 pail 119 00 pail.
The most common flat or low slope roofing systems include.
Top to bottom side to side from the ladder from the ground only one application two applications two applications with a spot follow up and on and on the list goes.
Cool seal elastomeric roof coating spray polyurethane foam spf.
Spray on roof coatings are applied as a liquid and dry naturally over 8 to 24 hours depending on the weather conditions.
If the water will not reach the peak of the roof from the ground you can spray while standing on a ladder.
Even so you will always need to mount the roof later on in order to remove the dead moss.
Wait about 20 minutes then rinse.
And none are necessarily more right or wrong than the other.
Ask ten different roof cleaning contractors how they spray a roof and you will probably get ten different answers.
My roof is really steep so steep i wasn t going to try to climb the roof to clean it.
But go slowly and use.
The applicator attached to my garden hose and from my ladder at the gutter i was able to spray the roof qse cleaner to the tip of the steepest roof ridge.
If you re hiring a professional.
That ll prevent the cleaner from drying out too quickly.