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Find a roof cleaning professional near Kirkland, WA

Find a roof cleaning professional near Kirkland, WA

14 near you

Find a roof cleaning professional near Kirkland, WA

14 near you

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Top 10 Roof Cleaning Professionals near Kirkland, 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 Kirkland roof cleaning professionals
Raina L.
Good job with the roof and gutter cleaning, very professional and fast. Also appreciate that they cleaned backyard and front yard waste after the roof clean.
Diamond Pro RoofingDiamond Pro Roofing
Vikas G.
Great job done in cleaning the roof
Diamond Pro RoofingDiamond Pro Roofing
Lionel B.
Great job cleaning our roof, on time and efficient !
Diamond Pro RoofingDiamond Pro Roofing
Sharon F.
Proman did an awesome job on our roof! And they cleaned our windows while they were here too. Probably one of the best jobs of cleaning our windows so far! Roof was only 6 years old, so this was the first moss cleaning.
Proman ServicesProman Services
Thumbtack Customer
Pedro and his brother did a great job cleaning my roof and gutters.
ASAP Graffiti Removal and Pressure Washing LLCASAP Graffiti Removal and Pressure Washing LLC
Lingdan M.
Absolutely 5 star service. Great attention to details. Cleaned the roof and deck at one shot. Will definitely come back.
Diamond Pro RoofingDiamond Pro Roofing
Dhrumin N.
Leo was punctual and did a great job in cleaning the roof, gutters and power washing the home. He took his time, was thorough in his work and cleaned up afterwards. Overall, me and my wife are very pleased with the results.
Diamond Pro RoofingDiamond Pro Roofing
Ankush O.
My roof was a mess and Leo did a great job cleaning it spick and span. Looks like a new installation completely. Thanks a ton. Will definitely recommend to friends and others
Diamond Pro RoofingDiamond Pro Roofing
Alelei H.
Leo did an amazing job on my roof, and my mom is very satisfied with his work! I sent a message to him late in the evening for an estimate not expecting a response. Surprisingly, I received a response within minutes, and scheduled an in-person estimate the next day. By the end of the week my mom’s roof was cleaned, as well as the moss removed from the roof and surrounding area. He also noticed some shingles that were missing, and he’ll be repairing those for her soon. Leo’s prices are fair and his quality of work is really good! Thanks Leo!
Diamond Pro RoofingDiamond Pro Roofing
Zeenia B.
Leo arrived on time and did a great job cleaning up our roof and solar panels. He took before and after photos which was very helpful. I will definitely be using his services yearly.
Diamond Pro RoofingDiamond Pro Roofing
Loyce C.
Leo and his partner were awesome! They were quick, efficient, and thorough. The roof has never looked better and the clean up afterwards around the house was like they were never here. Super personable and a great value was a bonus!
Diamond Pro RoofingDiamond Pro Roofing
Thumbtack Customer
Jeffrey cleaned my gutters and downspouts and blew off loose debris. I didn't have him do a complete roof cleaning as moss buildup was not too bad. It took about 3 hours including cleanup which was extremely thorough. Jeffrey is very professional as well as personable. I will definitely have him come back to do a complete cleaning when the situation warrants. I would recommend him to a friend. I have no negative comments.
Ospray Roof CleaningOspray Roof Cleaning
Jayaram K.
Leo is super professional, punctual ,Does great work at value. I started the roof cleaning and driveway pressure wash project over the weekend and Leo responded within minutes. His price was in line with other pro's but he had great reviews. He was able to begin on Monday itself! Once done he sent before and after pictures and when we got home were very happy with the roof. The roof and home were spotless. But, we left our car on the driveway and Leo wasn't able to finish the pressure washing the driveway die to our forgetfulness. Leo offered to come back the next day and finish. He came back today and finished. 5/5 will recommend and consider for all future jobs
Diamond Pro RoofingDiamond Pro Roofing
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