Top Rated
Puget Sound Roofing Co.
4.9
Price range: $$–$$$
- WA L&I registered
- moss removal specialist
- composition & cedar shake
- wind damage repair
- lifetime warranty available
How We Evaluate Seattle Roofing Contractors
Seattle's rainy climate — averaging 152 days of precipitation annually — creates unique roofing challenges. Moss and algae growth, roof deck rot, and ventilation issues are far more common here than in dry climates. We evaluate Seattle roofing contractors based on moss remediation expertise, rain damage repair experience, Washington state licensing, and verified homeowner reviews.
Washington State requires roofing contractors to register with the Department of Labor and Industries (L&I) as Specialty Contractors. Always verify your Seattle roofer's L&I registration before signing a contract. Every company on this list holds a valid Washington State contractor registration.
Cedar shake and composition shingle roofs are the most common Seattle roof types. Moss-resistant zinc or copper strips installed at the ridge and proper attic ventilation are key to maximizing roof lifespan in the Pacific Northwest.
Top Seattle Roofing Companies Compared
Northwest Storm Pros
4.8
Price range: $$
- WA L&I registered
- insured
- rain damage specialist
- free inspection
- moss prevention systems
Cascade Roofing Masters
4.7
Price range: $$–$$$
- WA L&I registered
- insured
- cedar shake restoration
- attic ventilation upgrades
- locally owned since 2001
Seattle Roofing Group
4.5
Price range: $$
- WA L&I registered
- insured
- roof deck inspection & repair
- free estimates
- 10-year labor warranty
Seattle, WA
Serving Greater Seattle
- Coverage across Seattle, Bellevue, Redmond, Kirkland, Renton, Tacoma, and Everett
- Pacific Northwest moss and algae expertise — all listed companies provide zinc strip installation and moss prevention treatment
- Every contractor experienced with both composition shingle and cedar shake roofing
- Free moss and rain damage inspections available from all listed companies
Why Local Matters
Contractors who know your area, your climate, and your local codes
Every contractor in our network is established locally — no out-of-state storm chasers. They know the permitting requirements, the climate challenges, and they'll be there for warranty work.
Frequently Asked Questions About Roofing in Seattle WA
How does Seattle's rain affect my roof lifespan?
Seattle's high annual rainfall and persistent dampness accelerate moss growth, which traps moisture and degrades shingles. Without treatment, moss can shorten an asphalt shingle roof's lifespan by 5–10 years. Zinc or copper ridge strips kill moss as rainwater washes over them. Proper attic ventilation (preventing moisture buildup from inside) is equally important — Seattle homes often have ventilation deficiencies that cause premature deck rot.
Does Washington State require a roofing contractor license?
Washington State requires roofing contractors to register as Specialty Contractors with the Department of Labor and Industries (L&I). This registration requires proof of insurance, a surety bond, and an active UBI number. Always verify your contractor's L&I registration number on the L&I website before hiring. The registration number should appear on all contracts and bids.
How much does roof replacement cost in Seattle WA?
Composition (asphalt shingle) roof replacement in Seattle typically runs $9,000 to $22,000. Cedar shake roof replacement costs $18,000 to $40,000 — cedar is premium but well-suited to Seattle's wet climate when properly maintained. Metal roofing costs $16,000 to $42,000 and is increasingly popular for its longevity in rainy climates. All prices include disposal of old roofing materials.
Should I repair or replace my Seattle cedar shake roof?
Cedar shake roofs in Seattle typically last 25–40 years with proper maintenance. If your cedar roof is under 20 years old, has isolated damage, and has been properly maintained with annual moss treatment, repair may extend its life 5–10 more years. If the roof is over 25 years old, has significant moss infiltration into the deck, or shows widespread curling, cracking, or missing shakes, full replacement is more cost-effective. Have a qualified contractor assess the deck condition before deciding.