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FAQ — Greater Seattle Metro
Not necessarily — but it depends heavily on the material, installation quality, and maintenance history. A 20-year-old traditional 3-tab asphalt shingle roof in the Seattle area is likely approaching the end of its reliable service life, since standard 3-tab shingles carry a 20–25 year lifespan under ideal conditions.
In Washington's wet climate, with moss exposure, wind events, and heavy rain, that lifespan is often shorter. A 20-year-old architectural shingle roof may still have several good years left if it's been maintained and moss-treated with regular roof and gutter cleanings.
Real Great Roofing recommends a free inspection for any roof 15 years or older in King County and Snohomish County. Are you selling your home? Get a free quote and inspection to increase the value of your home and likelihood of a fast home sale.
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Roofing
40–70 Year Metal Roofing
Standing seam and metal roofing systems rated for 50+ years in the Pacific Northwest.
Architectural Shingle Options
25–30 year dimensional shingles with enhanced wind ratings for Seattle's conditions.
Synthetic Slate & Shake
40–50 year synthetic products that look premium and outlast standard materials.
Annual Maintenance Programs
Regular cleaning and inspection programs that extend your roof's useful lifespan by years.
10-Year Workmanship Warranty
Every installation backed by our guarantee on top of manufacturer material warranties.
Moss-Resistant Material Selection
We specify materials and treatments that resist the moss and algae common in the PNW.
Service Options
Annual
Home Care Program
Bundle & save on annual roof and gutter cleaning
What You Get:
One-Time
Roof Cleaning
What You Get:
Annual
Roof Maintenance
What You Get:
Everything from a one-time cleaning plus:
One-Time
Gutter Cleaning
What You Get:
Annual
Gutter Maintenance
What You Get:
Everything from a one-time cleaning plus:
Roof Age, Lifespan & Longevity — Greater Seattle Metro
Roof lifespan in the Pacific Northwest is significantly influenced by material selection, installation quality, and ongoing maintenance. A standard 3-tab asphalt shingle roof installed correctly in the Seattle Metro might last 15–20 years, while a properly maintained architectural shingle system can reach 30+ years, and metal roofing regularly achieves 50–70 years or more. Real Great Roofing helps King and Snohomish County homeowners understand which investment makes sense for their home, budget, and long-term goals.
The Seattle Metro's combination of steady rainfall, wind events, and moss-promoting humidity puts roofs under unique stress. The same shingles that last 30 years in Phoenix may only last 20 in Kirkland, Sammamish, or Everett — because moisture infiltration, biological growth, and sustained wind exposure accelerate every roofing material's aging process. Choosing the right material and maintaining it properly with regular cleanings and inspections is how homeowners in our region get the most from their roofing investment.
Real Great Roofing installs roofing systems designed to perform long-term in Washington's demanding conditions. From our standard composite shingle replacements to premium metal roofing installations, we spec every job for maximum lifespan in the PNW climate — including proper ventilation, ice and water shield at all vulnerable points, and moss-resistant material selections where applicable. We also offer annual maintenance programs specifically designed to extend your roof's useful life.
What We Install
Every material we specify is selected for durability in Pacific Northwest conditions — resistant to moss, moisture, and wind while delivering the performance King and Snohomish County homeowners expect.
Architectural-grade shingles deliver 30–50-year lifespans, dimensional textures that complement Northwest architecture, and strong resistance to wind-driven rain, UV exposure, and algae growth — the most cost-effective full replacement option for most Seattle Metro homes.
Metal roofs offer 50-plus-year lifespans, exceptional weather resistance, and low maintenance — ideal for high-value homes across Bellevue, Kirkland, Sammamish, and the Eastside. Concealed fasteners shed rain fast and resist moss far better than most alternatives.
Heat-welded single-ply membrane systems for low-slope and flat sections common on modern homes across King and Snohomish County. Fully welded seams create a continuous watertight envelope that stands up to Pacific Northwest rainfall and ponding water.
King & Snohomish County
From the first free inspection to final cleanup, we handle every phase of your roofing project with transparent pricing and a workmanship guarantee that backs up every install.
We inspect every component of your roof system and give you a clear, documented condition report before recommending any work. No obligation, no pressure — just honest information.
Every replacement starts with a complete tear-off to the deck. We inspect and replace any rotted sheathing before a single piece of new material goes down — so your new roof starts on a sound foundation.
We install ice and water shield at all eaves, valleys, and penetrations — the highest-risk zones in any PNW roof. This critical layer prevents the water intrusion that causes interior damage during the heaviest Pacific Northwest storms.
We document storm and wind damage thoroughly for your carrier, work within the insurance process, and rebuild your roof to original specification or better using code-compliant materials and methods.
Soft-wash treatment removes moss and algae and applies anti-growth preventive treatments that extend the life of your existing roof — the most cost-effective maintenance service for any PNW homeowner.
Every installation is backed by our 10-year workmanship warranty on top of manufacturer coverage that comes with the materials. We stand behind every nail and shingle we install.
Built for the PNW
King and Snohomish County roofs face steady rainfall, windstorms, and moss-promoting humidity year-round. Every replacement we install is engineered to resist moisture intrusion, reduce moss growth, and improve attic ventilation — extending the life of your roof and improving energy performance across all seasons.
Licensed & Insured
As a fully licensed, bonded, and insured roofing company serving the Greater Seattle Metro, we know what it takes to deliver a replacement that performs in our climate. Our crews are trained and professional, our pricing is transparent, and our 10-year workmanship warranty means we stand behind every job we complete.
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