Washington · Seattle
Metal Roofing Contractor in Seattle, WA
Interlock Metal Roofing – Washington installs lifetime interlocking aluminum roofing in Seattle, Washington — metal shingle, slate, cedar shake and standing seam profiles with concealed fasteners, a warranted 120 mph wind rating, and the Guardian lifetime limited warranty, transferable once. Washington contractor licence #INTERMR75406; serving Seattle since 1997.
Technically reviewed by Scott Plumptree, Director of Marketing · Updated 2026-08-17
Interlock roofs installed in Seattle
Real installations, documented with town, profile and color — no stock photography.
Metal roofing in Seattle: installed once, warranted for life
Every asphalt roof in Seattle is on a 15–20 year replacement clock. An Interlock aluminum system ends it: one installation, four-way interlocked panels with concealed fasteners, a warranted 120 mph wind rating and UL 2218 Class 4 impact rating — and the Guardian lifetime limited warranty, which covers you for as long as you own the home and transfers once to the next owner.
Metal shingles & aluminum roofing profiles for Washington homes
Seattle homeowners choose from shingle, cedar shake, slate and standing seam profiles pressed in aluminum — the character Pacific Northwest architecture expects, in Alunar®-coated colors warranted for 30 years. Aluminum cannot rust the way steel does: there is no iron in the panel, which decides the roof in Salish Sea and Strait of Juan de Fuca salt air and matters again through a long Puget Sound wet season. "Class A Fire Rated Available." Full product specifications live with the manufacturer: Interlock aluminum roofing systems.
Choosing a roofing contractor in Seattle
Ask every contractor the same five questions: how panels attach (clips, single tabs, or four-sided interlock), whether fasteners are exposed, what the coating actually is, whether the warranty is manufacturer-backed and transferable, and how many metal roofs — specifically metal — the crew installed last year. Our answers are on this page and in writing at your estimate. Licensed and insured in Washington under contractor licence #INTERMR75406, carried on every crew along with general liability and workers' compensation. Interlock Metal Roofing (PNW) Inc. is the authorized installer of the Interlock® Lifetime Roofing System in Washington; the licence number is verifiable with the Washington State Department of Labor & Industries.
Roofing in Seattle
Seattle is our head-office city — 5608 17th Ave NW in Ballard — and 394 completed installations are on record here since 1998, more than any other city in Washington. The housing stock is what makes it: Craftsman bungalows and foursquares across Ballard, Wallingford, Green Lake and West Seattle, most of them with a north slope that grows moss every winter because asphalt granules hold water through an eight-month wet season. We check attic ventilation and roof drainage at every Seattle estimate.
Completed Interlock projects around Seattle
Every pin is a real installed roof — browse by profile, color and year.
What Seattle homeowners say
★★★★★“Interlock Metal Roofing (PNW) Inc. provided efficient, professional service in Seattle, WA, installing beautiful Metal Shingles with a skilled team and excellent workmanship.”
★★★★★“Interlock Metal Roofing (PNW) Inc. in Seattle, WA delivered great work—on time, with excellent communication and meticulous cleanup—installing high-quality Metal Shingles. Their installations are designed for Seattle’s heavy annual rainfall and the region’s moss-prone, humid conditions that can accelerate roof wear, helping ensure long-lasting performance.”
★★★★★“Enjoy lasting protection and curb appeal with a premium metal roofing installation from Interlock Metal Roofing (PNW) Inc. in Seattle, WA. Our expert crew successfully replaced the old composite shingles on this 1911 Craftsman home—despite steep roofs, tight access, and multiple bump-outs—installing new underlayment, repairing water-damaged boards, and delivering a beautiful, leak‑free metal roof that impressed both the homeowners and their neighbors.”
★★★★★“Interlock Metal Roofing (PNW) Inc. in Seattle, WA installed our new metal roofing and we couldn't be happier—Michael's professional, thorough presentation answered all our questions.”
Hear it from a homeowner
Interlock Metal Roofing — TV Commercial (as aired on NBC, CBS & FOX)
Can a roof last your entire lifetime? The 60-second answer — interlocking design, hurricane-force wind resistance, and the lifetime limited warranty.
Browse the Interlock product brochure
Profiles, colors and system details — the same brochure we bring to every Seattle estimate.
Common questions in Seattle
Who installs metal roofing in Seattle, WA?
Interlock Metal Roofing – Washington installs lifetime interlocking aluminum roofing in Seattle, Washington — metal shingle, slate, cedar shake and standing seam profiles with concealed fasteners, a warranted 120 mph wind rating, and the Guardian lifetime limited warranty, transferable once. Washington contractor licence #INTERMR75406; serving Seattle since 1997.
Do you have examples of your work near Seattle?
Yes — 2 documented installation photos in Seattle itself, plus verified homeowner reviews from Seattle. Every photo on this page is a real Interlock roof — no stock photography.
Will a metal roof handle Seattle rain and moss?
Yes — aluminum gives moss nothing to root into. It sheds moss and algae instead of feeding them the way asphalt granules and cedar do, and every panel locks to its neighbors on all four sides with no exposed fasteners for a Puget Sound wet season to work through. An Interlock roof ends that cleaning cycle: no granules to hold growth, no zinc strips to maintain, and we check attic ventilation and roof drainage at every Seattle estimate.
Are you licensed and insured in Washington?
Licensed and insured in Washington under contractor licence #INTERMR75406, carried on every crew along with general liability and workers' compensation. Interlock Metal Roofing (PNW) Inc. is the authorized installer of the Interlock® Lifetime Roofing System in Washington; the licence number is verifiable with the Washington State Department of Labor & Industries.
Ready for a fixed, written price in Seattle?
A 30–90 minute visit — including an attic ventilation check and a look at moss, drainage and flashing history — and a written number to decide with. No pressure, no gimmicks.
Serving Seattle and all of Washington from Seattle, WA. See all Washington service areas.
