Quality Roofing Workmanship You Can Trust
Local, Family-owned and operated.
Serving King & Snohomish Counties
Since 1996.
Free Roof Estimate
Contact us today to have your roof inspected for Repair or Replacement!
INSPECT
Not sure if your roof is in need of Repair or Replacement? We offer free roof inspections and are happy to evaluate the life of your roof. We will provide you with a proposal based on your roofing needs.
RE-ROOF
Our Re-Roof Division specializes in Composition/ Asphalt Shingle Roof Replacements on steep slope Residential and Commercial properties, along with gutters, downspouts, and skylights.
REPAIR
We have a dedicated Repair Division that specializes in repairing existing roofs’ needs, such as roof leaks, flashing, ventilation issues, skylight re-flashing and replacement, roof maintenance, and more.
Celebrating 30 years in business, Cornerstone Roofing is your local, Family-owned and operated roofing expert since 1996
Residential and Commercial Quality Roof Replacements, Roof Inspections, and Roof Repairs
Our Company
We are a company large enough to handle any of your roofing needs, yet small enough to monitor your project from start to finish to assure your complete satisfaction. Since 1996, we are dedicated to providing our clients with a dependable roof system through high quality workmanship, superior materials, and a premium level of customer service.
Our Services
Cornerstone Roofing specializes in Composition/ Asphalt Shingle Roof Replacements and Repairs on residential homes and commercial properties. We work with HOA’s, Property Managers, realtors, and associations for their steep-slope roofing needs on schools, churches, condominium buildings, apartment and townhome complexes, multi-family structures, duplexes, and more. Our services include:
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- Roof Replacements
- Roof Inspections & Evaluations
- New Roof Installations
- Roof Repairs
- Gutters
- Skylights
- Roof Maintenance
We welcome the opportunity to take a look at your roof and evaluate its current needs.
Workmanship Warranties
OUR ROOFING WORKMANSHIP
To ensure the highest quality workmanship, Cornerstone Roofing employs only experienced, Master Craftsman certified technicians
Re-roof Warranty options
Warranties that meet your roofing needs
STANDARD WARRANTY
- With your new roof, you will receive Cornerstone Roofing’s 10 year Workmanship Warranty, which covers you against leaks and repairs related to our roofing workmanship.
EXTENDED WARRANTY
- Extend your Workmanship Warranty from 10 years to 30 years with one of the trusted manufacturers we work with: replacement coverage of both labor and material is non-prorated for the entire length of the warranty. Transferrable one time within the first 20-years.
LIFETIME WARRANTY
- Comprehensive Lifetime Workmanship Warranty, backed by the manufacturer. 50-years of non-prorated coverage for both labor and materials. Transferrable to a new owner one time within the first 30-years.
Our Offers
ROOF SAVINGS THAT FIT YOUR NEEDS
Summer 2026 Special Offer
$500 Off Your Re-Roof
$500 Off a Complete Roof Replacement this summer. Ask your estimator about details today!
Promotional OfferS
No Payments, No Interest, 12 mo.
We offer Same-As-Cash Loans (No Payments and No Interest for 6 or 12 months) and Traditional Fixed Rate Installment Loans from 1 – 12 years (On Approval of Credit). Ask your estimator for information on the three ways to apply (mobile app, phone, online).
Testimonials from our customers
“The crew did a fantastic job replacing our roof. Their bid was very competitive, and the entire process was seamless and efficient. We were so impressed with the quality of their work and their professionalism that we recommended them to our neighbors, who also had a great experience.”
“Cornerstone Roofing exceeded our expectations with our roof replacement. With such a significant investment, we diligently sought quotes over a span of three years as our roof approached the end of its lifespan. Throughout this process, Cornerstone consistently stood out as a top contender, thanks to their great reviews and transparent, honest professional guidance. We were particularly impressed by the owner’s upfront assessment, which accurately estimated that we had another 2-3 years left before replacement became necessary, rather than rushing us into a decision. It’s refreshing in today’s sales landscape. … From the initial quoting process to ongoing communication throughout the project, every aspect of our experience with CSR was nothing short of outstanding. We are delighted with our new roof and grateful that we entrusted CSR to oversee such a smooth process.”
“Everything I heard about Cornerstone being the best came out true. Starting from the quote, timeliness, professionalism and follow up support, all interactions were unmatched and I felt comfortable throughout. Work ethics and cleanup speak volumes for the company.“
“I reached out to about 7 different local roofing companies – including Cornerstone – for bids on a full roof replacement project. I never felt any pressure to choose Cornerstone (unlike with some other roofing companies), but we ultimately went with them because their pricing, scope of work, customer service, and responsiveness over email/phone calls were all exceptional and stood above their competition. The crew worked hard, interacted with us kindly, cleaned up after themselves, and finished the project in 2 days. The new roof looks great, and I’d 100% recommend Cornerstone to anyone else considering roof work.“
“I had used Cornerstone a few years back to re-roof our front porch to address a leak that developed. That experience was positive, so we reached out to get a quote to replace our entire roof as it was reaching the end of its lifespan. My next-door neighbor and I both requested quotes from Cornerstone for our roof replacements. Our estimates were very thorough, detailed, and delivered quickly. My neighbor’s brother-in-law works in the construction industry and when asked about Cornerstone, he commented that they have a great reputation and that others in the industry had used them for roofing work. Leading up to the start of construction, the construction manager detailed what to expect during the work, when materials would arrive, and when the work should be completed. The construction crew arrived on time each day and put in a tremendous amount of work. They were professional, courteous, and did meticulous cleanup after the end of the day. They worked so hard that our old roof was removed and the new one replaced in just a day and a half. Our new roof looks amazing, and has numerous upgrades over the original roof.”
Get Started Today!
Click the button below to get a free roof estimate.
Serving King & Snohomish Counties since 1996
OUR SERVICE AREA
Cornerstone Roofing has been servicing King and Snohomish Counties since 1996. We are located in the Maltby area of Snohomish, Washington. Listed below are some of the cities and service areas we perform roofing in:
Northend:
- Arlington
- Marysville
- Lake Stevens
- Smokey Point
- Everett Paine-Field
- Cathcart
- Clearview
- Monroe
- Snohomish
- Maltby
- North Creek
- Picnic Point-North Lynnwood
- Alderwood Manor
- Martha Lake
- Brier
- Mukilteo
- Woodway
- Edmonds
- Mountlake Terrace
Eastside:
- Mill Creek
- Bothell
- Canyon Park
- Woodinville
- Duvall
- Cottage Lake
- Kenmore
- Kingsgate
- Kirkland
- Carillon Point
- Redmond
- Medina
- Clyde Hill
- Hunts Point
- Yarrow Point
- Bellevue
- Mercer Island
Eastside:
- Sammamish
- Issaquah
- North Bend
- Carnation
- Overlake
- Bridal Trails
- Union Hill
- Novelty Hill
- Factoria
- Newcastle
- Mapley Valley
- Mirrormont
- Klahanie
- Ames Lake
- Carnation
- Fall City
- Snoqualmie
Seattle and South:
- Lake City
- Lake Forest Park
- Shoreline
- Northgate
- Seattle
- Tukwila
- SeaTac
- Kent
- Federal Way
- Renton
- East Renton Highlands
- Cascade-Fairwood
- East Hill-Meridian
Why Cornerstone?
Experienced & Reputable
Installing Composite/ Asphalt Shingle roofs since 1996. We have been recognized as one of the Puget Sound’s top rated roofers.
Licensed, Bonded, Insured
Cornerstone has operated under the same license for three decades. License # CORNERI011CM.
Fair Pricing Plus Financing Available
Cornerstone’s experienced estimators are accurate and detailed. We offer No Payments and No Interest for 12 months (OAC).
CORNERSTONE ROOFING, INC.
QUALITY WORKMANSHIP YOU CAN TRUST
Serving King and Snohomish Counties
