By billie jo jannen it s generally not necessary to pressure wash a shingle roof for the purpose of removing ordinary dirt and leaves and pressure washing can potentially damage the shingles.
Should you power wash a roof.
The damage caused by pressure washing is not immediately noticeable.
The short answer is no when you search this very same question you ll see the internet shout back with words like never and don t.
Yes it will make it look sparkling clean but also you ll end up replacing the roof system sooner rather than later.
Of laundry strength liquid chlorine bleach and water.
Of course some chemicals can harm your roof as well and the runoff could cause problems with your landscape or parts of your home.
The powerful stream of water can also loosen roof shingles and with asphalt shingles strip them of the embedded granules that help extend the life of your roof.
The course you take is up to you and what you re comfortable with.
Advice from nfrc national federation of roofing contractors.
The response isn t wrong.
Never pressure wash your roof if you have asphalt shingles.
Pressure washing strips the granules from asphalt shingles.
If you must have a beautiful roof for some special guests or your own personal happiness you certainly can gently wash your asphalt roof while being aware that you are potentially shortening its life.
Use a pressure washer which can loosen shingles and seriously damage your roof.
There is a chance that the pressurized water could damage your shingles.
Instead spray down the roof with.
You might be among the vast collective of homeowners with a power washer stowed away in your garage so you wonder can you care for your roof safely by pressure washing its shingles.
The water pressure will remove the granules that are important for protecting your roof.
Pressure washing is very effective but may be best for metal or concrete roofs.
But pressure washing your asphalt roof will do more harm than good.
Once you squeeze the trigger the powerful recoil on the spray wand can throw you off balance and off of a ladder.
Power washing the tiles will remove fines in the concrete which will affect the lifespan of the tiles.
As a manufacturer of concrete roof tiles we would not advocate power washing or recoating tiles as this would invalidate any guarantee.