Seattle, WA · Flat Roof

Flat Roof Contractors in Seattle, Washington

Commercial or residential flat roof — compare local roofing companies. 15 local roofers listed, 15 verified.

Short answer: Flat and low-slope roofs in Seattle are usually TPO ($5.50–$9 a sq ft installed), EPDM ($4.50–$8) or modified bitumen ($3–$7); the membrane lasts 15–25 years, mostly decided by how well the drains are kept clear. In Seattle: 5.5 heavy-rain days a year (1 inch+). 15 of the roofers below have a license we checked; for any other, ask for a license number and a certificate of insurance.

Get a free quote See Seattle in numbers
  • 5.5heavy-rain days a year (1 inch+)
  • 50.8 inrain a year
  • 1days a year at 90°F or hotter
  • 56%of homes are not single-family houses

How much life is left in my Seattle roof?

Typical lifespans are published ranges for each material; for a Seattle house, real life also depends on installation, attic ventilation and the weather Seattle gets.

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Seattle in numbers

Public records for Seattle, not estimates. Each figure shows its source.

  • #2of 213Seattle ranks #2 of the 213 cities we cover for median home value.
  • #169of 213Seattle ranks #169 of the 213 cities we cover for freeze-thaw days (low end).

Roofing trade around Seattle

  • 206 roofing companies with payroll in the county, employing about 1,839 people; 63% have fewer than 5 employees.
  • A roofer's median pay here is $64,090 a year (Seattle-Tacoma-Bellevue, WA Metro Area).
Source: Census CBP · data as of 2023 Source: BLS OEWS, roofers · data as of May 2025

Seattle storm record

What the National Weather Service logged in the county in 2014–2026. County level, because storm reports are filed by county, not by city limits.

  • 1851Founded
  • 131 ft (40 m)Elevation
  • Chief SeattleNamed after

Storm data: NOAA Storm Events (public domain). City facts: Wikidata (CC0).

What it costs in Seattle

Asphalt-shingle re-roof, 2,000 sq ft home, adjusted for Seattle labor and material prices. Your quote depends on roof size, pitch and scope.

That typical price is about 1.3% of the median Seattle home value ($912,100).

Source: Census ACS (Seattle city) · data as of 2019–2023

Full Seattle cost guide by material →

What Seattle's climate means for flat roof

  • Reflective TPO or a white coating earns its premium in Seattle, where dark membranes absorb punishing heat and age years faster.

Roofers in Seattle, WA

15 listed. Roofers we verified against a public registry come first.

This list covers roofing companies generally. Confirm flat roof experience, materials, insurance and current availability with each company. A Verified badge refers to the registry check, not a confirmed specialty.

Flat Roof in Seattle: questions

How do I find a flat roof company in Seattle?
PickARoofer lists roofing companies serving Seattle, WA. This is a general roofing directory; confirm flat roof experience and availability with each company. A Verified badge describes a separate registry check, not a confirmed service specialty or insurance check. Confirm scope, insurance and availability directly. Requests go to one contractor at a time, with up to three attempts; a response or start date is not guaranteed. Free for homeowners.
Should I repair or fully re-roof in Seattle?
Ask a roofer to document the damage and compare a written repair scope with a replacement estimate. Roof condition, remaining life, materials and the extent of damage affect the decision. Confirm any inspection fee before booking.
How old are the homes in Seattle, and does it matter for the roof?
In the city of Seattle, the median home was built in 1974, and 54.2% of homes date from before 1980 (Census ACS). A roof on a home that old has often been re-covered at least once, so ask the roofer whether there is a second layer underneath: it changes the tear-off cost. The area sees about 27 freeze-thaw days a year, which loosens flashing and sealant.
What does roofing cost in Seattle?
For an average 2,000 sq ft home we model asphalt-shingle re-roof at $7,350 to $16,275 in Seattle, around $11,800 in the middle. That is about 1.3% of the median home value of $912,100. Your quote moves with roof size, pitch and how many layers come off.
How many roofing companies work around Seattle?
The Census Bureau counts 206 roofing companies with payroll in the county, employing about 1,839 people. 62.6% of them have fewer than five employees, so most quotes come from owner-run crews. A roofer's median pay is $64,090 a year (BLS).
Do I need a permit for flat roof in Washington?
Permit requirements depend on the property, scope of work and local jurisdiction. Check with the city or county building department and confirm who will obtain any required permit before work starts.

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Figures above: NOAA Storm Events Database (hail, wind, tornado; county of the city, 2014–2026), U.S. Census Bureau American Community Survey 5-year estimates (housing), NASA POWER (temperature and rain, 2014–2023). Prices: our published price method. How we collect data.