Roof Cleaning & Moss Removal in Sammamish, WA

Roof Cleaning Services in Sammamish, WA

Living in Sammamish means enjoying beautiful scenery, but the area’s frequent rain and moisture can also create ideal conditions for moss, algae, and organic buildup on your roof. At Alpine Roof Care, we provide professional roof cleaning, choosing the method for each roof based on its material, condition, debris and moss level so roofing materials are cleaned safely. Our experienced roof contractors in Sammamish, WA help homeowners protect their roofs, improve curb appeal, and extend the life of their roofing systems.

Professional Moss Removal

Moss can spread quickly in Sammamish’s damp climate, trapping moisture against the roof and potentially contributing to lifted shingles, wood deterioration, and premature wear. Professional moss removal clears damaging growth while protecting the underlying roofing material. After cleaning, a moss treatment can also be applied to help discourage regrowth and keep your roof cleaner for longer.

Customized Cleaning for Your Roof

Different roofing materials require different cleaning methods. Our team adjusts the cleaning process based on the material, age, and condition of your roof rather than relying on a one-size-fits-all approach. This helps provide a thorough clean while protecting the integrity and appearance of your roofing system.

(425) 487-2884 Free Estimate

      EXCELLENT  
   Based on 124 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Shane Hager 
 
 
 
 Trustindex verifies that the original source of the review is Google. I have to say I was very impressed with the quick response to get my roof cleaned.  I was even more impressed with the hard work that Tyler performed on my roof and the cleanup afterward.  Top rate service!  I would recommend them to anyone!
  
 
      Posted on Google  
   
   B.K. Priest 
 
 
 
 Trustindex verifies that the original source of the review is Google. We got a new roof .I can't recommend Alpine Roofing enough easy to work with ,  reasonable price , good communication. I have also used them for roof cleaning in the past . This is a company you can trust to do a great job . Barb in Shoreline
  
 
      Posted on Google  
   
   Kathleen Florio 
 
 
 
 Trustindex verifies that the original source of the review is Google. I've used Alpine Roof Care for several years to keep my cedar-shingle roof in good condition. The roof is steep, with different pitches in different sections, so it's not an easy job. The technicians arrive on time, do a thorough job, and replace missing or damaged shingles as necessary. I'm always assured that my roof is well-maintained by the folks at Alpine. e
  
 
      Posted on Google  
   
   Brent Kirschenmann 
 
 
 
 Trustindex verifies that the original source of the review is Google. Absolutely incredible expierence, went above and beyond what my expectations were. Three estimates and not only were they the best price, they did an amazing job.  I can tell you with all the options out there, skip the estimates and concers and go with Alpine!
  
 
      Posted on Google  
   
   LeAnn Power 
 
 
 
 Trustindex verifies that the original source of the review is Google. Amazing start to finish, our neighbor was even a bit jealous as the new roof made the house look new!  They had to replace a lot more plywood than expected but made sure the job was done right.
Crew worked non-stop start to finish and the foreman kept us up to date the entire way.  The office staff was also amazing and followed through on everything.
They also offer a 3 year maintenance and will proactively schedule so we don't have to.  I don't often write reviews but this one was worth it.
  
 
      Posted on Google  
   
   janice soler 
 
 
 
 Trustindex verifies that the original source of the review is Google. Alpine worked with me, listened to what I would like to happen during my service, providing tile roof blow off + gutters cleaned/washed, skylights washed/cleaned and then a follow-up inspection of the roof.  my request were put in writing.  In past services they repaired chimney flashing and lead around skylight damaged during a winter storm, replaced damaged tiles, provided matching tiles for any damaged tiles.  Reminder email/phone calls of service provided.  requested repair any leaking gutters/caulked.  Reasonably priced.
  
 
      Posted on Google  
   
   Margy Turner 
 
 
 
 Trustindex verifies that the original source of the review is Google. We have used Alpine Roof Care for years and they always do a thorough job in caring for our roof! They responded quickly to my request to clean my roof after the bomb cyclone!  As always, they did a great job cleaning the roof and cleaning up all the debris afterwards.  The office staff is a delight to work with too!  I highly recommend Alpine!!
  
 
      Posted on Google  
   
   Bruce Brown 
 
 
 
 Trustindex verifies that the original source of the review is Google. Ignacio just finished cleaning my roof and wanted to commend him for his work. Ignacio went above and beyond, making sure the house and surrounding areas were clean and spotless.
I will definitely continue to recommend and use your services. We use them for yearly roof cleaning / moss prevention!
  
 
      Posted on Google  
   
   Diana Pinto 
 
 
 
 Trustindex verifies that the original source of the review is Google. GREAT EXPERIENCE.  Purchasing a roof is a huge investment and it can be overwhelming.  I got 5 bids before deciding to select Alpine.  They were low pressure, they presented options without overselling and they took the time to educate me on roofing materials and the process itself.  They were very thorough and I felt confident in my decisions along the way.  They were also super responsive.  The install went as planned without any delays.  Site left clean every day.   They even connected some duct work in my attic that was not done correctly initially.  And they include 3 free cleanings of your roof.  Fair price, great company, and experience!  Highly recommend!
  
 
      Posted on Google  
   
   Steve Hendrickson 
 
 
 
 Trustindex verifies that the original source of the review is Google. Greg did an amazing job cleaning our roof and took the time to do a thorough job cleaning up around our home!
We have used Alpine for over 10 years, which included a roof replacement and yearly maintenance.  They provide great service at a great price!

Safe Roof Cleaning in Sammamish

Protecting your roof is especially important in Sammamish, where rainy seasons and year-round moisture encourage organic growth. Instead of aggressive pressure washing, we use gentle methods matched to your roof, such as air blow-off and high-volume, low-pressure water cleaning when appropriate, to remove moss, algae, staining, and buildup. The exact cleaning process is tailored to the roofing material and its condition.

Composition Shingle Roof Cleaning – Gentle moss and algae removal helps preserve the shingles and their protective surface while improving the appearance of the roof.
Cedar Shake Roof Cleaning – Specialized care helps remove moss and buildup that can contribute to moisture retention, timber rot, and splitting. Depending on the condition of the cedar, we may use high-volume, low-pressure water cleaning or gentle air cleaning.
Metal Roof Cleaning – Safe cleaning clears dark streak algae, pollen, dirt, and environmental buildup without damaging the roof’s coating or finish.
Tile Roof Cleaning – Gentle treatment removes moss, algae, and staining from concrete and clay tiles without unnecessary pressure that could cause chipping or displacement.

After cleaning, we may recommend a moss treatment to help slow future growth, particularly on roofs surrounded by trees or areas that receive limited sunlight.

Alpine Roof Care also provides pressure washing for driveways, patios, decks, pavers, vinyl siding, and other durable exterior surfaces throughout Sammamish.

before and after roof cleaning in everett

Roof Cleaning – before and after

Cedar Shake Roof Cleaning in Sammamish, WA

Cedar shake roofs require specialized care, especially in Sammamish’s wet Pacific Northwest climate. Moss and organic debris can collect between the shakes and retain moisture against the natural wood. Our cedar shake cleaning methods are designed to remove this buildup while protecting the roof from unnecessary damage. Depending on the age and condition of the shakes, we may use high-volume, low-pressure water cleaning or gentle air cleaning to preserve the wood while restoring a cleaner appearance.

Metal and Tile Roof Cleaning

Metal and tile roofs are durable, but they still collect algae, pollen, dirt, moss, and environmental buildup over time. Metal roof cleaning helps remove dark streaks and organic growth while protecting the roof’s coating and finish. For concrete and clay tile roofs, we use careful cleaning techniques that remove buildup without aggressive pressure that could chip, crack, or shift individual tiles.

Moss Treatment and Prevention

Removing existing moss is only part of maintaining a roof in Sammamish. Once the roof is clean, a professional moss treatment can help prevent spores from quickly taking hold again. Regular roof maintenance, debris removal, and preventative moss treatments can reduce moisture-related buildup and help protect your roofing system between cleanings.

Why Choose Alpine Roof Care?

Since 1992, Alpine Roof Care has been trusted by homeowners throughout the Sammamish area for professional roof cleaning and maintenance. Our team understands how the Pacific Northwest climate affects different roofing materials and uses cleaning methods appropriate for composition shingles, cedar shakes, metal roofs, and tile. From roof cleaning and moss treatments to repairs and sealing, we provide the services needed to keep your roof in good condition throughout the year.

We also offer complete roofing solutions, including repairs, reroofing, and roof replacement, so homeowners can work with one experienced company for both routine maintenance and larger roofing needs.

We are proud to be a forward-thinking roofing company committed to sustainable practices throughout the region. Alpine Roof Care was among the first in the region to introduce a green roofing program, recycling 90% of tear-off materials from roof repairs and replacements. By combining environmentally conscious practices with experienced roofing and maintenance services, we help Sammamish homeowners protect their homes for years to come.

Before and after roof cleaning in the Pacific Northwest

Get Started with Alpine Roof Care

(425) 487-2884 Free Estimate