Fast, Reliable Roof Replacement & Installation Across Seattle
A full roof replacement in Seattle typically runs $12,000-$28,000 for standard residential homes, with most asphalt shingle jobs completed in 2-4 days and flat roofing systems on multi-family buildings taking 3-5 days. We’re Ridgeline Roofing Co., and we’ve been replacing and installing roofs since 1984 - long enough to know that Seattle’s relentless marine drizzle and dense urban housing stock demand a different playbook than anywhere else in the Pacific Northwest. Call (844) 563-1816 and a live person will answer, day or night, to schedule your free estimate.
Our crews work throughout Seattle’s core ZIPs - 98105, 98106, 98107, 98108 - and the surrounding neighborhoods where tight lot lines, alley access, and century-old framing make every job a puzzle. We’ve hauled tear-off debris through Ballard’s narrow driveways, craned materials over Fremont’s hillside homes, and navigated Queen Anne’s steep streets where parking a single truck blocks traffic. This city doesn’t forgive roofers who treat it like suburbia.
Seattle’s 150-plus overcast days and persistent low-intensity drizzle keep roofs damp year-round, promoting moss and algae that degrade shingles from the inside out. That’s why our Roof Replacement & Installation team almost always installs zinc or copper ridge strips during replacement - the metal ions leach downslope with every rainfall and suppress moss regrowth for years. It’s a near-standard line item in Ballard and Wallingford estimates that would draw blank stares from a roofer in Phoenix, and it meaningfully distinguishes Seattle practice even from Portland, where the moss pressure is real but less severe.
Why Ridgeline Roofing Co. Is Seattle’s Preferred Roof Replacement & Installation Company
We’ve been in business since 1984 - over 42 years of standing behind local roofs, not chasing storms. Pete Navarro has led Ridgeline Roofing Co. through every economic cycle, every building code revision, and every shift in materials science. We’re still here because we do what we say we’ll do, and if we don’t, our 90-Day Done Right Promise means we come back and make it right - no paperwork, no arguing, no runaround.
Our reputation in Seattle rests on jobs like the 1910s Craftsman we worked on Queen Anne Hill. We stripped a failing cedar shingle roof, installed GAF Timberline Ultra HD in driftwood, and added copper ridge strips to combat the endemic moss. The old flashing around the dormers had failed from sustained moisture, so we replaced all step flashing and installed ice-and-water shield under the valleys to protect against the relentless drizzle. The homeowner still calls us when her neighbors need a referral.
Phones are staffed by a live person 24 hours a day, seven days a week - including nights, weekends, and the middle of a storm. No voicemail trees. No callback windows. Our technicians are background-checked and uniformed, and they document every inspection with photos taken from your actual roof, not a scary speech in the driveway. The number on your estimate is the number on your invoice. A square deal: the price we quote is the price you pay.
Our Roof Replacement & Installation Services in Seattle
Full Roof Replacement
Seattle’s housing stock - dense concentrations of 1910s-1940s Craftsman bungalows and early-century Victorians in ZIPs like 98102, 98103, 98107, and 98109 - means we’re constantly working on steep-pitched gable roofs with complex dormers and multiple penetrations. These roofs are prone to flashing failures under sustained moisture. A full replacement on a typical Seattle single-family home runs $15,000-$28,000 for asphalt architectural shingles, including tear-off, deck inspection, new underlayment, and proper ventilation. We handle the permit pull and coordinate with Seattle’s Department of Construction and Inspections so you don’t have to chase paperwork.
Asphalt Shingles
Asphalt shingles remain the workhorse for Seattle’s residential market, but not all shingles survive this climate. We install GAF Timberline and CertainTeed Landmark lines with enhanced algae resistance - critical in Wallingford and Fremont where heavy shade from mature Douglas firs and big-leaf maples accelerates biological colonization. A typical asphalt shingle replacement in Seattle runs $12,000-$22,000. We specify shingles with AR (algae-resistant) granules and pair them with zinc strip installation at the ridge. Without that metal treatment, you’re looking at moss regrowth within two to three years on north-facing slopes.
Flat Roofing
Older Capitol Hill and First Hill apartment buildings frequently feature low-slope or flat built-up roofs that fail when treated like pitched-roof jobs. These structures need TPO or EPDM systems entirely different from residential shingle work. Water ponds. Biological buildup thrives in the perpetual damp. We install single-ply membranes with proper tapered insulation to move water to drains, and we specify walkable surfaces where HVAC access is required. Flat roof replacement on a typical Seattle multi-family building starts around $18,000 and can exceed $40,000 for larger footprints with multiple penetrations.
New Construction
Seattle’s infill development and ADU boom keeps us busy on new construction across Ballard, Fremont, and the Central District. We coordinate with framers and general contractors on tight urban lots where crane placement, material staging, and debris removal require logistical planning. Our crews understand Seattle’s energy code requirements for cool-roof surfaces and ventilation standards that differ from surrounding jurisdictions. New construction roofing in Seattle typically ranges $8,000-$16,000 for single-family ADUs and small homes, scaling upward for multi-story townhomes with complex rooflines.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Seattle
We are authorized installers for GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral - seven manufacturer lines, with no substitutions without your written approval. For Seattle’s climate, we lean on GAF’s Timberline HDZ with StainGuard Plus and CertainTeed’s Landmark Pro with algae-resistant granules for residential pitched roofs. On flat applications, we specify IKO’s modified bitumen systems and single-ply TPO from major commercial manufacturers. We stock common accessories locally to avoid the supply-chain delays that can strand a Seattle roof mid-project during the wet season. Fast turnaround matters when your old roof is already leaking into the dining room.
Common Roof Replacement & Installation Problems We See in Seattle Homes
- Inadequate flashing repair around complex dormers and penetrations. The 1910s-1940s homes dominating Wallingford and Queen Anne have steep pitches with multiple dormers, skylights, and chimney penetrations. Flashing fails slowly under weeks of steady drizzle, and by the time water shows inside, the sheathing is compromised. We replace all step flashing and install ice-and-water shield in valleys as standard practice.
- Failure to address persistent biological growth. Moss and algae colonization accelerates granule loss and shingle degradation without proper metal strip installation. A roof replaced without zinc or copper treatment in Seattle is a roof that will need premature attention. We treat this as a core competency, not an upsell.
- Wrong materials for low-slope applications. Older Capitol Hill apartment buildings with built-up roofs need TPO or EPDM systems, not asphalt shingles shoehorned onto inadequate pitch. Shingles on a low slope in this climate trap moisture and fail within seasons, not years.
- Ventilation mismatched to dense tree canopy. Seattle’s mature neighborhoods create shaded, humid microclimates. Poor attic ventilation compounds the exterior moisture load, promoting mold in insulation and accelerating deck rot from the inside. We assess ventilation as part of every replacement scope.
Pricing for Roof Replacement & Installation in Seattle, WA
Honest numbers for Seattle’s market, based on jobs we’ve completed in the past 18 months:
- Asphalt shingle replacement, typical single-family home: $12,000-$22,000
- Premium architectural shingle with full ventilation upgrade: $18,000-$28,000
- Metal roofing (standing seam or interlocking panels): $28,000-$55,000
- Flat roof replacement, TPO or EPDM, residential: $18,000-$35,000
- Flat roof replacement, multi-family building: $25,000-$45,000+
- New construction, single-family or ADU: $8,000-$16,000
- Zinc or copper ridge strip installation (add-on to replacement): $800-$1,500
What moves the needle: roof pitch (steeper = more labor), layers of existing material to tear off, deck condition and required repairs, accessibility for material delivery and debris removal, and the complexity of penetrations and dormers. We provide upfront pricing after a photo-documented inspection - the number on the estimate is the number on the invoice. Call (844) 563-1816 for your free estimate. Estimates are free, and we serve all of Seattle and surrounding communities.
We Also Serve Cities Near Seattle
Our crews regularly work in Bellevue, Kirkland, Shoreline, and Redmond - each with its own microclimate and housing character, but all sharing the Puget Sound’s moisture challenges. We schedule Seattle-area jobs to minimize travel overhead and keep response times tight.
Serving Seattle, WA - Our Local Coverage Area
We’re based in the Seattle area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Roof Replacement & Installation in Seattle
Yes. Seattle’s persistent damp and shade demand algae-resistant shingles, proper underlayment, and zinc or copper ridge strips to suppress moss. We specify GAF and CertainTeed products with enhanced AR granules for residential work, and TPO or EPDM membranes for low-slope applications where shingles would trap water. Call (844) 563-1816 for material recommendations specific to your roof - estimates are free.
We remove all existing moss and organic debris during tear-off, treat the deck with a biodegradable cleaner if needed, and install zinc or copper ridge strips that leach metal ions downslope with every rainfall to prevent regrowth. This is standard on our Seattle replacements, not an optional add-on. Without it, moss returns within two to three years on shaded north-facing slopes. Call (844) 563-1816 to schedule an inspection.
Yes. We install TPO and EPDM single-ply systems with proper tapered insulation and drainage detailing for Seattle’s low-slope multi-family buildings. These structures require entirely different materials and techniques than pitched-roof homes, and we’ve completed numerous replacements in Capitol Hill and First Hill where water ponding and biological buildup are the primary failure modes. Call (844) 563-1816 for a flat roof assessment.
Yes. Seattle’s 1910s-1940s Craftsman bungalows in Queen Anne, Wallingford, and Fremont are our specialty. We replace all step flashing around dormers, install ice-and-water shield in valleys, and match historical rooflines with modern materials that withstand the marine climate. The complexity of these roofs demands experienced crews, not day laborers. Call (844) 563-1816 to discuss your project.
Every replacement includes the manufacturer’s material warranty - typically lifetime limited on premium asphalt shingles - plus our written 90-Day Done Right Promise on workmanship. If it’s not right, we make it right, no paperwork, no arguing. We also honor standing offers including $50 off any repair over $250, free second opinions on written estimates, $89 seasonal tune-ups, and a permanent 5% senior and veteran discount. Call (844) 563-1816 for warranty details specific to your chosen materials.
We’re Ridgeline Roofing Co., named for the ridge - the line where a roof proves itself. We’ve served homeowners since 1984, and we plan to be here when your next roof needs attention, too. Call (844) 563-1816 for a free estimate on roof replacement or installation in Seattle. A live person answers every call, 24/7.
Written by Pete Navarro, Owner at Ridgeline Roofing Co., serving Seattle since 1984.