What Do Major Insurance Companies Say About Roof Cleaning and Soft Washing?
What State Farm, Nationwide, Travelers, Amica, Allstate, and Progressive say about professional roof cleaning, moss, algae, and preventive maintenance.
Black streaks on asphalt shingles are common around Winston-Salem and the North Carolina Triad. Many homeowners assume roof cleaning is only about improving curb appeal. But several major insurance companies publish advice about roof condition, algae, moss, and professional roof maintenance.
There is an important distinction: not every insurer specifically recommends soft washing. State Farm and Nationwide discuss professional roof cleaning, while other companies emphasize maintenance and addressing visible roof problems. Together, their guidance helps explain why roof care deserves attention beyond appearance.
The insurance company logos below identify the original sources only. These companies do not endorse or sponsor Patella Exteriors.
Two major insurers specifically discuss professional roof cleaning
State Farm
Professional cleaning guidance
“should be removed by a professional roof cleaner”
State Farm identifies dark roof streaks as blue-green algae and recommends having that growth removed professionally. This is one of the clearest examples of an insurer recognizing professional roof cleaning as a legitimate maintenance service.
Read State Farm's original guidance ↗Nationwide
Professional cleaning guidance
“you can have removed with a professional cleaning”
Nationwide advises homeowners to watch for dark green or black algae stains on asphalt shingles and notes that growth in shaded areas can be addressed by professional cleaning. Its advice covers algae, mold, and moss and connects roof care with early maintenance.
Read Nationwide's original guidance ↗Other insurers emphasize maintaining roof condition
Travelers
Roof-condition and maintenance guidance
“then promptly address the issues”
Travelers advises looking for roof staining, moss growth, and damaged shingles, and addressing problems promptly. Travelers also states that a roof that is not regularly maintained may make it harder to obtain insurance coverage. That is roof-maintenance guidance, not a blanket requirement for soft washing.
Read Travelers's original guidance ↗Amica
Moss and algae awareness
“Moss, mold or algae growth”
Amica identifies moss and algae among the exterior warning signs homeowners should watch for. It explains that moss holds moisture and cautions against scraping moss from shingles yourself. A proper evaluation helps determine whether cleaning, repair, or replacement is appropriate.
Read Amica's original guidance ↗Allstate
Preventive maintenance guidance
“regular maintenance and inspections are key”
Allstate encourages routine roof inspections and professional maintenance to catch potential problems early. Its published guidance does not specifically require homeowners to soft wash asphalt shingles.
Read Allstate's original guidance ↗Progressive
Maintenance and coverage guidance
“Roof damage that results from failing to maintain your roof isn't covered”
Progressive explains that damage caused by neglect or ordinary wear and tear is generally different from an insured event such as a windstorm. Cleaning alone does not establish compliance with an insurance policy or guarantee coverage.
Read Progressive's original guidance ↗Is professional roof soft washing an accepted method?
Yes. The Asphalt Roofing Manufacturers Association (ARMA), a roofing-industry organization rather than an insurance company, publishes technical recommendations for cleaning algae discoloration on asphalt shingles.
ARMA describes careful application of an appropriate diluted cleaning solution, using a gentle application and rinse, and following the individual shingle manufacturer's instructions. It encourages using trained professionals because working on roofing surfaces can be hazardous.
Read ARMA's official guidance on algae discoloration.
This is the basis for professional asphalt-shingle soft washing: the cleaning solution is selected for the material and the organic growth, and the treatment is applied carefully rather than relying on force. Any method should be compatible with the roofing manufacturer's cleaning instructions and warranty terms.
What roof cleaning can—and cannot—do
An appropriate roof cleaning can improve appearance and address algae staining or some forms of organic growth. It can also make it easier to see the roof's condition from the ground.
There is an important difference between dark algae staining and actual roof deterioration. ARMA notes that ordinary algae staining has not been shown to damage standard asphalt shingles; moss growth can present different concerns. Neither staining nor cleaning alone proves that a roof is damaged.
A soft wash cannot fix loose or missing shingles, worn-out materials, active leaks, or structural problems. Those conditions require evaluation by a qualified roofing professional.
Does homeowners insurance require soft washing?
There is no universal soft-washing requirement across these insurance companies. An individual insurer may identify a roof condition during an inspection and request corrective action, but the homeowner should follow the specific written notice and confirm what the carrier will accept.
If an insurance notice mentions roof stains, moss, or debris, professional cleaning may be one possible part of the solution. When the problem is damaged or deteriorated roofing, cleaning is not a substitute for repair.
An informed approach to caring for your roof
The message from these insurance-company resources is straightforward: roof condition and regular maintenance matter. State Farm and Nationwide explicitly recognize professional cleaning of roof growth, and other insurers encourage prompt attention to visible problems.
At Patella Exteriors, we believe homeowners should understand their options before deciding how to care for their property. Appropriate soft washing is a recognized roof-cleaning technique—not merely an attempt to make old shingles look new.
If you have black streaks, moss, or questions about your asphalt-shingle roof in Winston-Salem, Clemmons, Lewisville, Kernersville, or the surrounding North Carolina Triad, contact us to discuss whether professional cleaning makes sense for your roof.
Request an estimate from Patella Exteriors.
Sources and identification notice
Each insurance-company card links to the original company-published article. The brief quotations are presented for education, with context describing what each publisher actually recommends.
Insurance-company names and logos are used solely to identify the publishers of the cited information. No insurer mentioned here sponsors, endorses, recommends, or has a partnership with Patella Exteriors. Brand names and marks belong to their respective owners.
This article summarizes general educational material, not an insurance policy, coverage determination, roof inspection, or warranty. For an actual insurance requirement, consult your own insurer and the written policy or notice.