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Is it harmful to pressure wash an asphalt shingle roof?

Yes
52%
No
18%
In some cases
26%
Unsure
3%
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Question: Is it harmful to pressure wash an asphalt shingle roof?
Top Answer (52% of 92 votes): Yes.

Answer: Yes
Explanation: Sure, it's tempting to want to get any moss, algae, dirt, etc. off of your roofing shingles. But pressure washing your asphalt roof will do more harm than good. ... The damage caused by pressure washing is not immediately noticeable. Pressure washing strips the granules from asphalt shingles.
Pro Clean
Answer: In some cases
Explanation: If the contractor is not experienced in cleaning roofs they can cause excess roof gravel removal.
Brightway Window Cleaning & Powerwashing
Answer: In some cases
Explanation: Porter’s Powerwashing currently does not offer roof cleaning.
Porter’s Powerwashing
ProMatcher
Answer: Yes
Explanation: Can affect the integrity of the roof
Hood Technologies Fire Safety I nc
Answer: In some cases
Explanation: Not all cases it’s not harmful but just have to light wash it
D.A. Meadows Cleaning Service LLC
Answer: Yes
Explanation: High pressure will remove the granular's within the asphalt, I would not recommend it.
AAA Power Washers Inc.
ProMatcher
Answer: In some cases
Explanation: Depends on the age of material
Hallelujah mobile detail & pressure washing
Answer: In some cases
Explanation: Ask for Experience in shingle roof ... is need it if you don’t want damaged
Miami Pro Pressure Washer LLC
Answer: Unsure
Explanation: I Don't Do Roofs At The Present Time
DDJ Mobile Pressure Washing and Car Washing, Detailing inc.
ProMatcher
Answer: No
Explanation: Not using lower pressures
Cutt-N-Crew
Answer: Yes
Explanation: A shingle roof should be low pressure washed. Using more the chemicals to clean it.
S. Williams Painting
Answer: No
Explanation: mildew and grime build up and roof wears out quicker
2 POWERWASH GUYS
ProMatcher
Answer: Yes
Explanation: NEVER PRESSURE WASH A ASPHALT ROOF !! Only soft wash method should be allowed !!
Building Wash NC
Answer: No
Explanation: If trees leave a coating on your roof or you have mosey coats growing then you should get it washed
Saul Reyes Contracting.
Answer: In some cases
Explanation: If shingles are brittle
HAMMER & SONS CONSTRUCTION
ProMatcher
Answer: No
Explanation: low sweeping presher
Artios Painting 309 788 9432
Answer: Yes
Explanation: The loose particles that have been sitting for a long period of time and shingles can get damaged. I do not power wash roofs.
Dan's Pressure Washing and Sealing
Answer: Yes
Explanation: The pressure can remove the protective granules
Mallett Pro Wash
ProMatcher
Answer: Yes
Explanation: We do not pressure wash roofs; we only soft wash roofs.
5 Star Property Maintenance & Pressure Washing, LLC
Answer: In some cases
Explanation: We would use soft wash rather than actual pressure
H2O Environmental Alabama LLC
Answer: No
Explanation: if done properly
G M M Property Inspections
ProMatcher
Answer: Yes
Explanation: Pressure washing an asphalt shingle will lessen the life expectancy of a shingle as you end up removing roofing granules when you pressure wash
American roofing &remodeling
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Related Questions

What is the best way to remove algae from a wood shingle roof?Top answer: Power wash with a chemical mix

What is the best way to remove algae from an asphalt roof?Top answer: Power wash with a chemical mix

Will roof cleaning extend the life of a roof?Top answer: Yes

What is the best way to remove algae from a tile roof?Top answer: Pressure wash with a water chemical mix

Is it advisable to power wash a wood shingle roof?Top answer: No

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