Roof Cleaning

Find a roof cleaning professional near Olympia, WA

Find a roof cleaning professional near Olympia, WA

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Top 10 Roof Cleaning Professionals near Olympia, WA

Q & A

Answers to commonly asked questions from the experts on Thumbtack.

How often should you clean your roof?

Some roof cleaning companies recommend that you clean your roof every couple of years, but you might need to do maintenance every year depending on the type of roof you have, the climate and the weather. Roofs in harsher climates tend to require more frequent cleaning.

Can a roof be cleaned?

Yes roofs can be cleaned, and yes, it’s a real thing. Roof cleaning may actually be a wise investment to prolong the life of your roof. Overgrowth of moss, grime, lichen or algae can all shorten the life of your roof. If you have black streaks growing on your roof, they are likely caused by gloeocapsa magma algae spores that have landed on your roof and taken up residence. Once the algae has grown into streaks, the organism has usually been growing for several months and it’s high time to have it removed. If you live in a rainy part of the country, such as the Pacific Northwest, there’s a good chance you’ll find moss growing on your roof at some point. The northern part of your roof, as well as any parts that remain shaded all day, will provide a wet, cool haven for moss to flourish. Unfortunately this water-absorbing moss can damage your shingle roof, leading to rot if not removed. Beyond roof health and function, a clean roof can boost your curb appeal and potentially boost your home’s resale value. The national average for roof cleaning costs ranges between $270 and $350, although prices can be higher depending on how large your roof is, how steep your roof is, and what type of cleaning is necessary. Typically pros use either a pressure wash or chemical wash (made with a concentrated bleach solution) to remove algae, lichen, moss and dirt.

Is it worth it to hire a roofer?

There are several reasons why it’s worth it to hire a professional roofer instead of attempting it yourself. The first is safety. Roofing is inherently dangerous, as a fall from a roof could seriously injure or kill you. Roofers have specialized equipment and training to help prevent accidents.  

Next is experience. Roofers know how to spot problems (leaks, missing shingles, moss or mold growth, etc.)  in your roof that could potentially save you from costly repairs down the road. 

And finally, roofers save you time by getting the job done quickly and with a high degree of quality.

Why do I need to clean my roof?

Over time, algae, moss, lichen, dirt and even salt (if you’re near the ocean) can build up on your roof. These buildups can affect the look and function of your roof unless removed. The buildup of organic materials such as moss on a shingle roof can prevent water from sloughing off as it normally would. Trapped water can rot the roof or cause early deterioration of your shingles. Even if you don’t have a shingle roof, moss and lichen absorb water, and that wet material adds weight and stress to your roof — as well as providing a home for insects and other pests, and collecting dirt. For reflective, cool roofs that redirect heat away from the home, algae and moss growths can hamper their ability to deflect the sun, which can affect utility bills. Visually, moss, dirt and algae growths on a roof can have a negative effect on perceived home value and curb appeal. For example, black algae streaks on your roof may cause a potential homebuyer to assume that the roof might need repair or replacement, when it only needs to be cleaned.

How much does it cost to clean a roof?

The national average for roof cleaning costs ranges between $270 and $350. Factors that can affect the cost to clean your roof are the height of your house, the size and pitch (steepness) of your roof, and the complexity of your roof’s design and accessibility. Geographic location also plays a role in roof cleaning costs as regional labor rates and area costs to do business will vary. There are several ways to clean a roof. The most common is pressure washing. Industrial pressure washers can spray over 3,000 pounds per square inch (psi) of water — which is much too powerful for roof cleaning, and may tear off shingles and damage your roof. Confirm that the roof-cleaning pro you choose will only use a low-pressure sprayer to protect your roof investment. For large algae or moss growths, pros often recommend a combination of low-pressure washing with a bleach-based chemical solution. This is referred to soft washing and should handily remove any growths taking over your roof.

What chemicals are used to clean roofs?

Roof cleaning is done to remove moss, lichen, algae, and buildup of other grime and dirt. There are several methods for roof cleaning, which can include a chemical soft wash, pressure washing, low-pressure washing and hand washing. When a chemical soft wash is used, a bleach mixture is sprayed onto the roof. The bleach-based solution is absorbed by the algae or moss, which dies from exposure to the chemical. The roof is then sprayed with a low-pressure rinse of water, which loosens the now-dead material, allowing it to slide off the roof.

For homeowners, the Asphalt Roofing Manufacturers Association recommends a mixture of 50 percent laundry-strength liquid chlorine bleach and 50 percent water. Professional roof cleaning companies will use an industrial mixture that is still safe but may be more effective in eliminating algae and moss growths. Asphalt shingle roofs are the most common type of roof, but each roofing material will have its own cleaning needs, so it’s best to consult with your roofing pro before diving in. Don’t do it yourself unless you can safely navigate your roof, the chemicals and a sprayer system. When in doubt, leave it to the pros.

Reviews for Olympia roof cleaning professionals
Thumbtack Customer
Justice did a great job communicating, showed up on time and cleaned up following the roof cleaning. Roof looks great.
Anderson Window Cleaning & Pressure WashingAnderson Window Cleaning & Pressure Washing
Serina H.
Did a great job, very professional. I wasn’t there to see after the roof was cleaned . Justice send pictures so I can see the clean roof.
Anderson Window Cleaning & Pressure WashingAnderson Window Cleaning & Pressure Washing
Nancy t.
Roof/gutters/moss cleaning. More to come. Only allowed to pick 3 thing I liked. Coming back next week to cut wood and clean gutters again after roof cleaner does its thing.
PNW Solutions & Services LLCPNW Solutions & Services LLC
Katie L.
Best roof cleaning we’ve ever had. Thanks Tyler!
Exterior ShineExterior Shine
Lisa P.
He went above and beyond to get our roof as clean as possible.
Gary MarshallGary Marshall
John C.
Cleaned house, shop, gazebo and shed roofs. Prompt, delivered as proposed, cleaned up afterwards, Courteous and responsive.
Anderson Window Cleaning & Pressure WashingAnderson Window Cleaning & Pressure Washing
Brenda N.
I will definitely hire them again for gutter and roof cleaning. Great service!
Ken cleaning services LLCKen cleaning services LLC
Natalie B.
Anderson was great! Cleaned our whole roof, treated it, and charged exactly what they estimated.
Anderson Window Cleaning & Pressure WashingAnderson Window Cleaning & Pressure Washing
Elisa B.
Great work cleaning up the roof and windows! Definitely I will contact Andrew in the future!
Andrew’s Home DetailAndrew’s Home Detail
Phil L.
had my roof and gutters cleaned. the job was done to perfection even the clean up. dave is very professional and very polite
Rainier Window & Gutter CleaningRainier Window & Gutter Cleaning
Ashleigh R.
Very professional & now works on our families roofs. Anderson Window Cleaning & Pressure Washing is the best!
Anderson Window Cleaning & Pressure WashingAnderson Window Cleaning & Pressure Washing
Jeff O.
Did a great job with moss removal on our roof, cleaned up everything too! I highly recommend!
Exterior ShineExterior Shine
Yang Q.
Nice job, my roof looks like brand new. The cleaning crew is professional and fast, came to my house the same day, just took 2 hours to make my roof fabulous. Highly recommend to choose him.
Ken cleaning services LLCKen cleaning services LLC
Wendy L.
Quick response to cleaning my roof, they also cleaned my little shed that I had not asked them to do. Super happy with the service and the price. Thank you!
Rainier Window & Gutter CleaningRainier Window & Gutter Cleaning
Mardi k.
Friendly. Answers questions. Roof looks so clean!Removed the debris and left the yard better than when they arrived! Prompt service.
Ken cleaning services LLCKen cleaning services LLC
Carol H.
What a nice man! He did a great job of cleaning our roof for us. I will definitely hire him again in the future!
Wash Me Window CleaningWash Me Window Cleaning
Laura R.
These guys rock. The roof and gutters are cleaner then I’ve ever seen them. It was nice that they took pictures of the gutters and roof from above so I know they were all cleaned. They were also very careful to rinse all the grime that had splattered in the house, windows and cars. I will definitely have them come back next time I need this done. 👍🏻
Ken cleaning services LLCKen cleaning services LLC
Thumbtack Customer
Justice showed up on time and was very professional. He knew exactly what to do for my roof and what not to do so he would not damage it. His quote was accurate and his work ethic was superb. I will be hiring him again for the next cleaning. The roof looks outstanding!
Anderson Window Cleaning & Pressure WashingAnderson Window Cleaning & Pressure Washing
Thumbtack Customer
Justice was on time and professional. He cleaned my 3 second-story windows, cleaned and moss treated my roof, and cleaned out my gutters. He also removed a nest a family of pigeons had constructed on one roof peak behind a drain pipe. After clearing out the nest and birds he put chicken wire up to help prevent them from roosting there again, all without additional charge! I will be recommending him to family and friends!
Anderson Window Cleaning & Pressure WashingAnderson Window Cleaning & Pressure Washing
Thumbtack Customer
Couldn't be better. Always on time, communicated as necessary, did a tremendous job cleaning and repairing our tile roof - above and beyond the call of duty. Would recommend to anyone.
Forest Home MaintenanceForest Home Maintenance
Robert w.
Arrived an hour late, but did e-mail me to let me know. Didn't see it because I wasn't online. Not a problem because they are two hours away. 15 years on asphalt roof and it looks as good as new. Took 6 hours and price seems to be quite reasonable. Will definitely consider Brock in the future for roof cleaning.
Brock's Exterior ServicesBrock's Exterior Services
Diane P.
Brock and his assistant did an excellent job cleaning and treating our roof. I have already asked him to return to help us solve a gutter cover problem.
Brock's Exterior ServicesBrock's Exterior Services
Justice of Anderson did an excellent job. He cleaned my roof and gutters . I would highly recommend this company to anyone wanting the job done right and at a reasonable price.
Anderson Window Cleaning & Pressure WashingAnderson Window Cleaning & Pressure Washing
Michael L.
Aaron did a great job on our roof, looks like new again. Whole process and interactions were very good. I highly recommend Rainier Window & Gutter Cleaning.
Rainier Window & Gutter CleaningRainier Window & Gutter Cleaning
DeeAnna W.
They sent on person to clean my roof,siding and deck. The worker was not able to communicate in English. There were a lot of areas missed and wood damaged by pressure washer. Very dissatisfied and won’t be recommending!
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