Commercial Roofing
Flat Roof Installation & Repair in Portland, OR
TPO, EPDM, and PVC flat-roof systems installed by the same crew from start to finish. Fixed-price estimates, photo documentation on every job, and a 50-year transferable workmanship warranty. Licensed in Oregon and Washington.
No subcontractors
The crew that shows up on day one is the crew that finishes the job.
50-year workmanship warranty
Fully transferable — covers the building even if ownership changes.
Fixed-price estimates
The number on your estimate is the number on your invoice.
Licensed OR & WA
Oregon CCB #123456 · Washington #ROOFER123XX · $2M general liability
What we install
Full TPO, EPDM, and PVC flat-roof systems
We install all three major low-slope membrane systems and help you choose the right one for your building, climate exposure, and budget. **TPO (Thermoplastic Polyolefin)** — Energy-efficient, heat-welded seams, and strong resistance to UV and puncture. A solid choice for most Portland-area commercial buildings. **EPDM (Rubber Roofing)** — Proven for decades in the Pacific Northwest's wet climate. Flexible in cold weather and straightforward to repair if damage occurs. **PVC (Polyvinyl Chloride)** — Chemical-resistant and ideal for roofs exposed to grease or industrial exhaust. Hot-air welded seams create a watertight bond. Manufacturer material warranties pass through directly to the building owner. We'll walk you through the specs before you sign anything.
Our process
How a commercial flat roof project works
**1. Free on-site inspection** — We walk the roof, check drains, penetrations, and the existing substrate. You get a written report with photos. **2. Fixed-price estimate** — One number. No allowances, no unit-price surprises. We scope the job completely before we quote it. **3. Scheduled installation** — We coordinate around your business operations. The same crew handles tear-off, substrate repair, and membrane installation. **4. Photo documentation** — Every stage is photographed. You receive a complete job record, which also supports any future warranty claim. **5. Final walkthrough** — We review the finished roof with you, confirm drainage is clear, and hand over warranty documents before we leave the site.
Also in our scope
Beyond new installation
Roof repairs & leak diagnosis
Ponding water, failed seams, cracked flashings — we locate the source, quote the fix, and document the repair. No upsell to a full replacement if a repair is the right call.
Storm damage assessment
We inspect, photograph, and document damage for your insurer. We can coordinate directly with your adjuster and provide the supplemental documentation carriers typically require.
Preventive maintenance
Annual or bi-annual inspections catch small issues before they become expensive ones. We clear drains, reseal penetrations, and provide a written condition report each visit.
Recent projects
Commercial flat roofs we've completed
TPO installation — Portland, OR 
EPDM re-roof — Beaverton, OR 
PVC system — Lake Oswego, OR
Booking late summer installs now
Free roof inspection through July
We're scheduling commercial inspections at no charge through the end of July. Get a written condition report and a fixed-price estimate before the busy fall season.
Common questions
Flat roof FAQs
How long does a commercial flat roof last?
It depends on the membrane type and how well the roof is maintained. A properly installed TPO or PVC system typically lasts 20-30 years. EPDM can last 25+ years in the Pacific Northwest climate. Our 50-year workmanship warranty covers installation defects for the life of the building — well beyond the typical contractor guarantee of 10-25 years.
Do you work on occupied buildings?
Yes. Most of our commercial projects are on occupied buildings. We schedule work to minimize disruption, use temporary waterproofing when needed during multi-day projects, and coordinate access with your property manager or facilities team.
Which membrane system is right for my building?
The right choice depends on your roof's slope, drainage design, any chemical or grease exposure, and your long-term budget. TPO is the most common choice for Portland-area commercial buildings. PVC is worth the premium if the roof is near kitchen exhaust or industrial equipment. We'll give you a straight recommendation — and the reasoning behind it — during your free inspection.
Can you handle insurance claims for storm or hail damage?
Yes. We inspect and document the damage, prepare a detailed report suitable for your insurer, and can coordinate directly with your adjuster. We don't pressure you into filing a claim — if the damage is minor and a repair makes more sense, that's what we'll quote.
Do you offer financing for commercial projects?
We offer 0%-down financing options on qualified replacements through a regional lender, with terms from 24 to 84 months. Ask about eligibility when you request your estimate.
Are you licensed to work in Washington as well as Oregon?
Yes. We're licensed in both states — Oregon CCB #123456 and Washington #ROOFER123XX. We carry $2M general liability and full workers' compensation coverage. Certificates of insurance are available on request.