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Bellingham Roof Sealers

Browse these roof sealers with great ratings from Thumbtack customers in Bellingham.

West Sky Remodeling LLC
from 29 reviews
  • 3 years in business
  • 70 hires on Thumbtack
Emily O.
Verified review

I've been working with Victor for 5+ years. He did my personal roof and did a roof for a client of mine. He's also done roof repairs. His work is immaculate and tight. I am so happy to have Victor in my contact list. He does a lot more than roofs as well, framing, and general contracting. He is a good person and I am grateful for all his help and good work. As a Realtor I work with many different tradespeople and Victor is by far the most responsive, available, easy to work with and his crews do quality work!

Top Pro
Northwest Cleaning Services
from 27 reviews
  • 10 years in business
  • 58 hires on Thumbtack
  • Top Pro on Thumbtack
John T.
Verified review

I was looking to have my roof cleaned and gutters cleaned out after a whole lot of cedar dropping fell. One young man responded quickly, and was ready to do the job. I have since had issues with family and can't follow up with the cleaning; this is my problem, not Justin, who said he would do the job. I was disappointed to have only one company make a bid, but that's what happened.

Guerra Family Remodeling
from 25 reviews
  • 7 years in business
  • 40 hires on Thumbtack
Mendy S.
Verified review

Very responsive, met with me the same day and completed the work the day after. He gave me honest information about the condition of our roof and what his scope is and isn't. We had a minor complication with a repair with Ernesto back at our home in 10 minutes. All is well. Will continue to use him and very reasonable in terms of cost.

Centsible Services
from 23 reviews
  • 7 years in business
  • 42 hires on Thumbtack
Marsha B.
Verified review

Jeff started out right by giving me a very thorough and thoughtful estimate clearly based on my specific request for roof cleaning, gutter cleaning and moss treatment. His bid was right in the middle of the range of bids I received. Jeff went above and beyond and trimmed several branches that were hanging on the roof. Both the roof of my main home and the guest house were seriously infested with moss and weeds growing in the gutters. Both cleaned up so well, look beautiful. I was also pleased that he used eco friendly products. He also did a good job cleaning up. I would not hesitate to recommend Centsible Services. I am beyond satisfied with the job!

  • 12 years in business
  • 10 hires on Thumbtack
Cynthia N.
Verified review

Jarrett did a great job cleaning our roof. He answered emails and phone calls in a timely manner and got right on the job. We will be asking for this companies services again. Thank you!

DC Roofing
from 3 reviews
  • 3 hires on Thumbtack
Taryn M.
Verified review

Darwin responded immediately to my request to check out what appeared to be a problem with my roof (mold was appearing in an upstairs bedroom). He came out that same weekend and diagnosed the issue, then explained in to me laymen’s terms. He came out the following weekend to make the repairs. It was clear throughout the process that he is highly experienced, and in addition to that, his price was very reasonable. We have already hired him to do another job. I would highly recommend Darwin.

Peaks Northwest Roofing
from 3 reviews
  • 18 years in business
  • 4 hires on Thumbtack
Karen H.
Verified review

We knew going in that our roof was way past due to be replaced, and that there would be some underlying repair work to be done. Nobody realized just how bad it was though until they were actually into the job. They were able to bring in a carpenter to help with the structural repairs and still had the job done in just a few days, and at a price that we felt was fair and reasonable. My brother-in-law, who is a perfectionist and has worked around the home construction industry for 40 years, was very satisfied with their work. Very professional, did a great job cleaning up after they were done, and met all our expectations. My only slight quibble is that when they offered a discount for paying cash, unlike most businesses they actually meant CASH - a check wasn't considered cash, and that wasn't made clear up front. Considering everything else we had going on though, that is a small complaint.

Topside Roofing & Siding
from 2 reviews
  • 28 years in business
  • 1 hire on Thumbtack

Topside Roofing and Siding is the only MasterElite roofing contractor in Whatcom County which means all our employees are factory trained and separates us apart from the competition

Bolger Roofing Inc.
from 1 review
  • 9 years in business
  • 1 hire on Thumbtack
Walker Motor Works L.
Verified review

Last week the roof on my new business flew off! I called Bolger Roofing and they were out here within an hour. He took a look at the damage and gave me a couple of options to get it fixed. He Had it done within two days, and the only reason it took two was because another storm came in.

Crystal clean roof care
from 1 review
  • 4 years in business
  • 1 hire on Thumbtack
Mike M.
Verified review

They showed up when they said they would, when there was an air flow issue under my sheeting they came up with a solution thato made sense, took care of a couple of small punch list items in short order, I would, and have already recommended Robert and crew to anyone who is looking for a professional company.

Silver Hammer Roof Co.
from 1 review
  • 1 hire on Thumbtack

We do all types of roofing and roof repairs. We have 30 years of experience, full licensed, bonded and insured, serving Skagit, Island, San Juan and Whatcom counties.


We take care of our customers from start to finish and always do more than expected. Our friendly and skilled staff can do the job safely, quickly with the quality you need in a roof installation.


We do great work at a good fair price. We we are done you never knew we where there except for now you have a new roof.

  • 15 years in business

Johnson's Roofing installs composition shingles, metal roofing, tpo, hot tar, torchdown, wood shakes and wood shingles. We do roof repairs and coatings. We also do roof cleaning and moss removal and treatment. We install skylights and gutters. We are licensed and insured. We focus on performing quality work and offer a ten (10) year workmanship warranty. We have numerous repeat customers due to our quality of work. The majority of our work comes from referrals by satisfied customers. We look forward to the opportunity of serving you. We are here for all your roofing needs. Residential and commercial work.


Proud to be a San Juan Islands local company We price our products fairly and work hard to make sure that our customers get exactly what they order. All of our staff is experienced and certified and has been with us for many years. We hold ongoing training and safety seminars to ensure up-to-date styles and techniques. If you’re in the market for a new roof, new siding, or new gutters, you probably already know what a big investment it can be. You don’t want to let just anyone handle the job. Here are some things to look for when choosing a contractor, and thus why A San Juan Islands Roofing LLC. should be your first choice.


Roofing Services, Lawn Care, Gutter, Landscaping Services, Door Installation, Fencing, Flooring


We provide affordable lawn care and roofing solutions in a timely and professional manner. We have over 20 years of experience!


We love doing an attaboy job for you. Our services include: - Window cleaning - Storm window cleaning - Roof cleaning (all types) - Gutter cleaning - Roof sweeping - Roof treatments - Siding washing - Deck cleaning - Sidewalk cleaning - Driveway cleaning


Western Roofing is located in Bellingham Washington and has been roofing new construction, commercial and residential buildings since 1938. If you need your roof repaired or a new roof, you can be comfortable with us. We will give you a free estimate for the quality of roof of your desire with expert quality installation.


We specialize in roof preservation, moss removal, gutter cleaning, roof treatment, and siding cleaning. We service all styles and slopes of roofs, residential and commerical buildings. We have been in business for 10 years and serviced over 2,000 roofs. Our methods are tried and true, and 100% satisfaction for all our customers.


make a good Job and that way I can keep occupied doing more jobs

Q & A

Answers to commonly asked questions from the experts on Thumbtack.

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.

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.

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.

What is a standing seam metal roof?

A standing seam metal roof may be a strong, durable, safe choice when you’re considering metal roofing installation options. A standing seam refers to the raised seam where the sheet metal roofing panels join. Traditionally, shingles and roof panels lie flush to the roof, making them more prone to rust or penetration by water at their seams. In a standing seam metal roof, the raised (or standing) seams run vertically from the roof ridge to the eaves, with no horizontal seams. In addition, the fasteners joining the metal panels together are concealed, providing even fewer opportunities for water or moisture to build up. The cost to install a standing seam metal roof will depend on the type of metal you select, the size of your roof, and the cost of roofing labor in your region. Materials will play a major role in your metal roofing installation costs. If you select standard galvanized steel, the cost per square (100 square feet) might be in the $150-$300 range, while a high-end choice such as copper or zinc could be between $1,000 and $1,500 per square. Here is one example of cost:   

  • Standing seam metal roof: $300 per square to start, including materials and labor.
    • A 30-square roof could cost $9,000 or more.

Can a metal roof be installed over shingles?

Metal roofs are durable, environmentally friendly, safe and budget-friendly. If you’re considering an update, metal roofing installation doesn’t have to mean completely removing your old roof. In many cases, metal roofing can be installed over your existing shingles. Research building codes in your state, as many require that after two roofs have been installed, all roofing materials must be completely removed before a third roof can be put on. This protects your home’s structural integrity and your family’s safety. Carefully read contractor reviews and choose someone with extensive experience with metal roofing installation. One concern when installing metal over shingles is that over time, condensation can build on the shingles and cause the metal to rust. This will lead to rust around the panels, making them more likely to come loose in a storm. Nationally, the average cost for metal roofing installation ranges from $6,000 to $20,000. The wide price range represents different roof sizes, different types of metal, and the cost of labor in different parts of the country — and can also include the cost of removing an old shingle roof prior to installing the metal. As a line item, the average cost of removing an old roof to prepare for installing a new roof, plus adding new roof decking, costs on average about $45-$75 per square (the pro roofer’s term for 100 square feet), depending on the pitch of the roof. Always make sure you have a clearly written contract and a warranty on both the labor and the metal.


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