Spokane, WA · Flat Roof

Flat Roof Contractors in Spokane, Washington

Commercial or residential flat roof — compare local roofing companies. 30 local roofers listed, 17 verified.

Short answer: Flat and low-slope roofs in Spokane 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 Spokane: 0.5 heavy-rain days a year (1 inch+). 17 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 Spokane in numbers
  • 0.5heavy-rain days a year (1 inch+)
  • 22 inrain a year
  • 20days a year at 90°F or hotter
  • 33%of homes are not single-family houses

How much life is left in my Spokane roof?

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

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In Spokane's high-UV desert climate, the single best investment for a flat roof is reflective coating applied on a defined maintenance cycle: it cuts surface temperature, extends membrane life, and delays full replacement by years. Common flat roof systems in Spokane include TPO (heat-welded, energy-efficient), EPDM (durable rubber membrane), and modified bitumen — each with different cost, longevity, and maintenance profiles worth discussing with a local contractor.

Spokane in numbers

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

  • #201of 209Spokane ranks #201 of the 209 cities we cover for hail days of 1 inch or more (low end).
  • #196of 209Spokane ranks #196 of the 209 cities we cover for damaging thunderstorm-wind days (low end).
  • #15of 209Spokane ranks #15 of the 209 cities we cover for freeze-thaw days.
  • #189of 209Spokane ranks #189 of the 209 cities we cover for yearly rainfall (low end).

When storms hit Spokane

Hail reports by month in the county, all years combined 0 Jan 0 Feb 0 Mar 0 Apr 0 May 2 Jun 3 Jul 3 Aug 0 Sep 0 Oct 0 Nov 0 Dec
Hail reports by month in the county, all years combined
Jan0
Feb0
Mar0
Apr0
May0
Jun2
Jul3
Aug3
Sep0
Oct0
Nov0
Dec0

Most hail reports come in July; the season runs June to August. Book inspections and repairs before that window, not after.

Source: NOAA Storm Events · data as of 2014–June 2026

Roofing trade around Spokane

  • 78 roofing companies with payroll in the county, employing about 678 people; 64% have fewer than 5 employees.
  • A roofer's median pay here is $58,720 a year (Spokane-Spokane Valley, WA Metro Area).
Source: Census CBP · data as of 2023 Source: BLS OEWS, roofers · data as of May 2025

Spokane storm record: Spokane County

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

  • 1871Founded
  • 1,844 ft (562 m)Elevation

Where hail of 1 inch or more was reported in Spokane County

1.25 in hail1.25 in hail1.5 in hail Spokane
  • 31 to 1.74 in
  • 01.75 to 2.74 in, golf ball to tennis ball
  • 02.75 in and up, baseball

Largest plotted stone: 1.5 in. Bigger dots are bigger stones.

3 reports of 1 inch or larger have coordinates. Each dot is a reported location, not a storm path.

Sources: NOAA, Census county outline

Biggest hail days

DateLargest hailReports that dayWhere it was reported
August 11, 2022 2.75 in, about the size of a baseball 1 Latah
August 12, 2022 1.5 in, about the size of a ping-pong ball 1 Plaza
August 24, 2022 1.25 in, about the size of a half dollar 1 Wayside
“A strong thunderstorm dropped hail ranging from half an inch to 2.75. Most hail reports ranged from 0.75 to 1.5. It damaged at least 15000 acres of crops, broke windows and damaged siding of homes in Liberty Lake, and dented numerous vehicles.”
National Weather Service report, August 11, 2022
Source: NOAA Storm Events Database · data as of 2014–2026

Last big hail on record

August 11, 2022

Hail of 1.75 inches (golf ball) or larger fell on 1 day in 2014–2026. Our records end where NOAA's do, so a newer storm may not be listed yet.

Strongest tornado

EF0 · May 6, 2022

It stayed on the ground for 2.14 miles and was up to 250 yards wide. Tornado generated a discontinuous line of damage first observed near the intersection of E. A second area of more significant damage was observed along 6th Avenue that included roof damage and many trees uprooted or snapped at the base. The third and longest track of damage began near E.

Strongest thunderstorm gust

70 mph · July 23, 2014

A wet microburst brought sustained winds of 35 to 50 mph with gusts 60 to 70 mph across Spokane County. The winds descended near Cheney and peaked while passing through Airway Heights, Northwestern Spokane, and Deer Park.

What it means for flat roof

Flat and low-slope roofs hold hail on the surface instead of letting it bounce. With 2.75-inch hail on record in Spokane County, ask what membrane and cover board the contractor specifies.

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

What it costs in Spokane

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

That typical price is about 3.6% of the median Spokane home value ($326,200).

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

Full Spokane cost guide by material →

What Spokane's climate means for flat roof

  • Under Spokane's desert UV, membrane choice and reflective coatings drive lifespan more than anything else — plan on coating renewal to reach full service life.

Roofers in Spokane, WA

30 listed, first 20 shown. 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 Spokane: questions

How do I find a flat roof company in Spokane?
PickARoofer lists roofing companies serving Spokane, 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 Spokane?
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.
When is hail season in Spokane?
July is the worst month: 38% of the 8 hail reports NOAA holds for the county came then. Reports run from June to August. Book the inspection before June, while crews still have open dates.
How big does hail get near Spokane?
The largest hail NOAA logged near Spokane measured 2.75 inches, about the size of a baseball. Hail of an inch or more fell on 4 days in the same record. The biggest day was August 11, 2022, with 1 reports. The National Weather Service calls hail of 1 inch or larger severe; the bigger the stone, the more likely it is to crack a shingle.
How old are the homes in Spokane, and does it matter for the roof?
The median home in Spokane was built in 1961, and 68.6% 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 114 freeze-thaw days a year, which loosens flashing and sealant.
What does roofing cost in Spokane?
For an average 2,000 sq ft home we model asphalt-shingle re-roof at $7,350 to $16,275 in Spokane, around $11,800 in the middle. That is about 3.6% of the median home value of $326,200. Your quote moves with roof size, pitch and how many layers come off.
How many roofing companies work around Spokane?
The Census Bureau counts 78 roofing companies with payroll in Spokane County, employing about 678 people. 64.1% of them have fewer than five employees, so most quotes come from owner-run crews. A roofer's median pay is $58,720 a year (BLS).
How long does a flat roof last in Spokane?
A properly installed flat roof in Spokane lasts 15 to 25 years depending on material and maintenance. TPO and EPDM systems at the higher end; modified bitumen at the lower end without coating renewal. The biggest variable is drainage maintenance: a flat roof that drains properly and gets annual inspections reaches its rated lifespan; one with chronically clogged drains fails years early. Commercial buildings and multi-family properties benefit from a maintenance agreement that includes two drain clearings per year.
What is the difference between TPO, EPDM, and modified bitumen for Spokane properties?
TPO (thermoplastic polyolefin) uses heat-welded seams and a white reflective surface — the current industry standard for new commercial and residential flat roofs, best for energy efficiency. EPDM (ethylene propylene diene monomer) is a rubber membrane installed with taped or adhesive seams — very durable and forgiving, widely used on residential flat roofs for decades. Modified bitumen is a reinforced asphalt sheet applied by torch or cold adhesive — economical and familiar to many local Spokane contractors, though it runs warmer than TPO and may require more frequent coating. Cost, pitch, and building type typically dictate the right choice — a Spokane flat-roof specialist can walk you through the tradeoffs for your specific structure.
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.

More in Spokane

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.