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.
Should you power wash a roof.
If the slope is too steep to easily traverse or if your house is more than one story you should hire a pro.
Why you should never pressure wash your roof shingles.
The reason is simple.
It takes a professional to clean a roof and they don t employ the use of high pressure equipment.
If you do get up on your roof wear well fitting shoes with slip resistant rubber soles and be sure to don eye and skin protection.
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.
It can t be a new roof because roofers haven t been there.
When you pressure wash use the minimum force possible to pry the fungus free and wash it from the roof.
You come home one day and your neighbor s roof looks spectacular and so clean.
Not to mention using a pressure washer from a high place is dangerous.
The response isn t wrong.
Once you squeeze the trigger the powerful recoil on the spray wand can throw you off balance and off of a ladder.
1 attach a 35 degree spray wand to the pressure washer hose and fill the pressure washer.
Tempting as it might be to blast away unsightly moss and algae using a pressure washer to clean your roof is dangerous not to mention potentially damaging.
Clean your roof only after determining that you can safely walk its surface.
Even with growth forming on your roof s surface you should not break out the pressure washer on your asphalt shingles.
Should you pressure wash it.
Never pressure wash your roof if you have asphalt shingles.
Now you re thinking of having your roof cleaned too.
You ll do more harm than good.
The water pressure will remove the granules that are important for protecting your roof.