And still be rinsing at 5 g p m.
Power washing roof is it bad.
I suggest you make amendments to your article just to be on the safe side.
Roof cleaning takes tools designed for the job.
But pressure washing your asphalt roof will do more harm than good.
Pressure cleaning a roof when done properly using rotary cleaning equipment is safe cost effective and will not force water through or under tiles as the jet angle is controlled and always points away and down the roof rather than into or all over the place which is the case when blasting with a lance or wand is used.
There will be some granule loss under the moss and lichen.
Don t try to pressure wash a roof like you would a fence or a sidewalk as doing so could cause damage to surface tiles or shingles while also creating moisture damage.
Pressure washing strips the granules from asphalt shingles.
With roofs its not pressure washers that damage the roof it s high pressure.
The fact is a professional that knows how to use his equipment can pressure wash a roof with as little as 200 p s i.
But that is normal.
The damage caused by pressure washing is not immediately noticeable.
Power washing takes 5 years off the roof surface.
Pressure washing is dangerous.
Never pressure wash your roof if you have asphalt shingles.
Yes it will make it look sparkling clean but also you ll end up replacing the roof system sooner rather than later.
It can take up to 4 to 6 weeks for the moss to come off the roof.
We apply a special blend of soaps and let the rain rinse it off.
When you pressure wash use the minimum force possible to pry the fungus free and wash it from the roof.
You soft wash a roof.
Once you squeeze the trigger the powerful recoil on the spray wand can throw you off balance and off of a ladder.
The two main methods for roof cleaning are.
The water pressure will remove the granules that are important for protecting your roof.
Not to mention using a pressure washer from a high place is dangerous.
Roof materials aren t designed to be pressure washed with an average pressure washer.