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Find a roof cleaning professional near SeaTac, WA

Find a roof cleaning professional near SeaTac, WA

16 near you

Find a roof cleaning professional near SeaTac, WA

16 near you

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Top 10 Roof Cleaning Professionals near SeaTac, WA

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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.

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.

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.

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.

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.

Reviews for SeaTac roof cleaning professionals
Emily H.
Did a great job cleaning my roof and the surrounding areas after the roof was cleaned. Would hire again!
Diamond Pro RoofingDiamond Pro Roofing
Thumbtack Customer
he did not want to get on my roof to clean it. I think he was scared. Roof cleaner- don't think so.
Forest Home MaintenanceForest Home Maintenance
Thumbtack Customer
Reliable, and did a great job cleaning the roof and sealing around a ventilation pipe on the roof.
Proman ServicesProman Services
Thumbtack Customer
Remove roof moss, clean gutters.
Proman ServicesProman Services
Thumbtack Customer
Jorge cleaned all the moss off of our roof and then cleaned up the moss. He also treated the roof with a moss killer. He was on time, professional and efficient. Highly recommend.
Proman ServicesProman Services
Thumbtack Customer
Paul did a good job cleaning my roof and gutter for a reasonable price. He even fix my gutter for free. Also, he help cleanup the debris on ground after cleaning roof.
Gilland Window & Gutter CleaningGilland Window & Gutter Cleaning
Renee B.
Roof looks great! Cleaned up and was very professional and friendly. Will recommend.
Diamond Pro RoofingDiamond Pro Roofing
Thumbtack Customer
Petro cleaned our roof and did a fine job. Will hire him again.
ASAP Graffiti Removal and Pressure Washing LLCASAP Graffiti Removal and Pressure Washing LLC
Larry A.
Happy to recommend Leonardo Roof Cleaning for moss removal. *Roof wash(moss removal) *Gutters and downspouts cleaning *Mosskill for treatment *Clean up around the house after job done *Power wash patio Punctual, hard working, professional, exceeded expectations and reasonably priced. See before and after pix.
Diamond Pro RoofingDiamond Pro Roofing
MeInda B.
Leo did an amazing job cleaning our roof and installing Bird B Gone spikes. He arrived on time, did a perfect job cleaning our roof and cleaning up all the debris all at a reasonable price. I will definitely use him again next year. Thank you Leo!
Diamond Pro RoofingDiamond Pro Roofing
Thumbtack Customer
Mr. Pedro Bonilla and his brother were just GREAT! They even got there early and did an amazing job. They cleaned the moss off the roof and cleaned the gutters of debris .Cleaned up, removed any sign of the moss they removed from the roof. They were very professional and easy to work with. They spent 2hrs+ and did a very good job!
ASAP Graffiti Removal and Pressure Washing LLCASAP Graffiti Removal and Pressure Washing LLC
Thumbtack Customer
He cleaned my rental roof for moss. He was very clean and sprayed it to protect from moss again. Highly recommend. Nice price.
Proman ServicesProman Services
Devin S.
They did an amazing job cleaning out roof, gutters, and even the outside of the house afterward. Great to work with.
Diamond Pro RoofingDiamond Pro Roofing
Vanessa F.
The team at Pro clean were fantastic. Cleaned the roof and cleaned up after themselves. They were also very communicative when they were running a bit behind, which was much appreciated.
The ProClean TeamThe ProClean Team
Thumbtack Customer
Our roof is 23 years old and I did not want to risk the damage involved with pressure washing. The ASAP team made the roof brand new with just a blower and brushing. They also cleaned the outside of the gutters and clear all the debris from the roof. Great experience and would will highly recommend them in the future.
ASAP Graffiti Removal and Pressure Washing LLCASAP Graffiti Removal and Pressure Washing LLC
Mary H.
We are glad we hired Jon to clean our roof and gutters. He was fast, efficient and pleasant to deal with.
US roof careUS roof care
Thumbtack Customer
Showed up on time, did the roofs, cleaned up--NO mess, and even blew off the driveway. Definitely recommend!
ASAP Graffiti Removal and Pressure Washing LLCASAP Graffiti Removal and Pressure Washing LLC
Thumbtack Customer
I hired Jorge to clean some moss from my roof, clean gutters and do a small repair on the gutters. He did a good job for a good price.
Proman ServicesProman Services
Thumbtack Customer
Fantastic work. Cleaned up a moss-covered roof. Left the property spotless. Professional and friendly. I highly recommend
ASAP Graffiti Removal and Pressure Washing LLCASAP Graffiti Removal and Pressure Washing LLC
Jiahui X.
2 guys came out to remove the moss from my roof and apply moss treatment. They spent a good two hours cleaning my roof (my roof was already in decent shape but they were very careful and thorough). They used brushes to thoroughly remove clumps of moss, and they did a fantastic job. They even took photos of my roof after their work and showed them to me. I'll definitely recommend them to my friends.
ASAP Graffiti Removal and Pressure Washing LLCASAP Graffiti Removal and Pressure Washing LLC
Sierra R.
My roof looked brand new after it was cleaned! He did an amazing job cleaning up afterward. I am a very happy customer!! I definitely recommend.
Diamond Pro RoofingDiamond Pro Roofing
Thumbtack Customer
excellent job, done on a short notice,roof is clean recommend to everybody, will definetely hire again, thank you Jorge. Tatiana
Proman ServicesProman Services
Kerston S.
Setting up the appointment to clean my roof was a cinch - very responsive and good listening to what I was looking for. Turns out my roof was in worse shape than originally thought, so the team came back out and finished up the job for a second day! Committed to doing a good job! Prices are reasonable and the roof looks great. Also, I didn't want to use chemicals on the roof so they recommended a more natural, eco-friendly treatment. Solved that right away!
The ProClean TeamThe ProClean Team
Thumbtack Customer
Had a great experience. They responded quickly to my need for roof cleaning. Did a beautiful job. And we're very communicative along the way.
ASAP Graffiti Removal and Pressure Washing LLCASAP Graffiti Removal and Pressure Washing LLC
Thumbtack Customer
Jorge Q did an excellent job of cleaning the roof and gutters. He also cleaned up the area around the house. Very satisfied and would hire him again. Sharon G., Seattle
Proman ServicesProman Services
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