( Roofing — King County )
Roofingin Seattle.
Seattle roofs live under trees, in the wet, with moss working at every shingle edge. Ventilation and flashing decide how long they last — not the shingle brand.
( Seattle )
Roofing for Seattle homes
The city's tree canopy is beautiful and hard on roofing. Shade keeps surfaces damp, needles and debris hold water in valleys, and moss lifts shingle edges until water gets underneath. Combine that with the under-ventilated attics common in older Seattle homes and you get decking that rots from below while the roof still looks fine from the street.
Older Seattle rooflines are also complicated: dormers, additions built across generations, and low-slope sections over porches and bump-outs that cannot take shingles at all. Those transitions between steep and low-slope are where most leaks we chase begin. Getting them right means the correct membrane on the flat sections and properly flashed intersections, not more sealant.
Permits for Seattle projects run through Seattle Department of Construction & Inspections (SDCI), and we handle the filing and inspections as part of the job. For the full picture on how we approach this work, see our roofing page — and for everything we build locally, our Seattle contractor page.
Typical Seattle investment
Broad ranges for orientation — your written estimate is free and itemized.
| Tier | Range | What it covers |
|---|---|---|
| Repair & flashing | $800–$5k | Leak diagnosis, flashing correction, localized shingle and decking repair. |
| Architectural asphalt | $15k–$40k | Full tear-off, deck repair, ventilation correction, underlayment and new shingles. |
| Metal & low-slope | $30k–$80k+ | Standing-seam metal or membrane systems, complex rooflines and transitions. |
Seattle questions
- How long does a roof last in Seattle?
- Architectural asphalt typically gives 20–30 years here when the attic is properly ventilated and moss is kept off. Under heavy tree cover with poor ventilation, the same roof can fail a decade early — ventilation is the biggest variable.
- What should I do about moss on my roof?
- Keep it off rather than letting it establish. Moss holds moisture against shingles and lifts their edges until water gets beneath. On a replacement we address the conditions that let it thrive — trimming overhang where possible and correcting drainage and ventilation.
- My house has a flat section over the porch — can it be shingled?
- No. Low-slope sections need a membrane system, and the transition where it meets the steep roof has to be flashed correctly. Shingling a near-flat area is one of the most common causes of the leaks we get called to fix.
Free In-Home Estimate
Let’s talk about your place.
Free estimates across Everett, Seattle & the Eastside. You’ll talk directly to Eduard — no call centers, no sales layer.