How much does a commercial roof replacement cost in Portland Oregon?

Commercial roof replacement in Portland Oregon typically ranges from $6 to $18 per square foot installed. For a 10,000 sq ft building budget roughly $60,000 to $180,000. TPO averages $7-$12 per square foot, PVC runs $9-$14 per square foot, and metal roofing $12-$18 per square foot. Flow Roofing provides free inspections and written estimates with no obligation. Commercial estimates vary from 24 hours to 2 weeks depending on project scope. Licensed Oregon CCB #218471, Washington FLOWRR*791Q4.

What is the best commercial roofing system for Portland Oregon?

For flat and low-slope commercial roofs in Portland Oregon, TPO and PVC membranes are the top choice. Both handle Oregon's 43 inches of annual rainfall well and last 20-30 years when properly installed. TPO costs $7-$12 per square foot. PVC costs $9-$14 per square foot and offers superior resistance to ponding water. For steep-slope buildings, metal roofing is the longest-lasting option at $12-$18 per square foot.

How do I know if my roof needs repair or full replacement?

If your roof is under 15 years old with isolated damage, repair is usually the right call. If your roof is over 20 years old, you have recurring leaks, or repair costs are becoming frequent, replacement is likely the better long-term investment. Flow Roofing provides honest written assessments and will recommend repair over replacement when that is the right answer.

What workmanship warranty does Flow Roofing provide?

Flow Roofing provides a 10-year workmanship warranty on standard roof packages. A lifetime workmanship warranty is available on MaxFlow Systems installations. Every project is also backed by the manufacturer warranty behind the materials installed. Flow Roofing is a Malarkey Certified Premium Installer which allows us to offer extended manufacturer warranties including No Dollar Limit coverage that non-certified contractors cannot provide.

What is a No Dollar Limit NDL warranty on a commercial roof?

A No Dollar Limit NDL warranty is the highest level of commercial roofing warranty available. Unlike standard warranties that cap the payout, an NDL warranty covers the full cost of repair or replacement for the duration of the warranty period, typically 15-35 years. NDL warranties are transferable if the property is sold. Flow Roofing is a certified installer and can offer NDL warranties that non-certified contractors cannot.

Does Flow Roofing offer emergency roof repair in Portland?

Yes. Flow Roofing responds to emergency roof repair and emergency tarping calls for commercial and residential properties across Portland Oregon and Vancouver Washington. Same day response is possible depending on scope. Call 503-936-2476 for urgent roofing issues.

Is Flow Roofing licensed in Oregon and Washington?

Yes. Flow Roofing holds active contractor licenses in Oregon CCB #218471 and Washington FLOWRR*791Q4. Flow Roofing is also an NRCA member contractor and a Malarkey Certified Premium Installer. All projects are completed to manufacturer specifications and local building codes in both Oregon and Washington.

What areas does Flow Roofing serve?

Flow Roofing serves the greater Portland Oregon metro area including Portland, Beaverton, Lake Oswego, Tigard, Gresham, Hillsboro, Tualatin, West Linn, Oregon City, Wilsonville, and the Oregon Coast. We are also licensed in Washington and serve Vancouver WA, Camas, Washougal, and surrounding Southwest Washington communities.

503-936-2476

Asphalt Shingle Roof Replacement

High performance shingle systems built for lasting protection, curb appeal, and long term value.

Flow Roofing specializes in asphalt shingle roof replacement for homeowners looking for long term protection, improved curb appeal, and dependable performance. Our roofing systems are designed to handle the moisture, weather, and seasonal demands of the Pacific Northwest while giving your home a clean, finished look that lasts.

Roof Replacement in Portland Oregon by Flow Roofing

The Highest Performing
Shingles Available

Why Choose Asphalt Shingles

Asphalt shingles remain the most popular roofing option for homeowners because they offer a strong balance of durability, appearance, and cost. Modern architectural shingles resist weather exposure, shed water effectively, and provide reliable performance for decades when properly installed. They are also available in a wide range of colors and profiles, making it easier to match the style of your home.

Signs It May Be Time for Replacement

If your roof is showing visible wear or recurring problems, it may be time to consider a full replacement instead of continued repairs.

Missing, curling, or cracked shingles
Repeated leaks or water intrusion
Noticeable sagging or uneven roof lines
Granule loss or excessive aging
Storm related damage
A roof at or beyond its expected lifespan
Repairs that continue to add up over time

Our Roof Replacement Process

Discuss Your Needs Every homeowner qualifies for a free 25 point inspection. We examine your roof and recommend the best options for your home.
Create a Plan Based on what we find, we create a clear plan with materials, scope, and timeline. Our team stays in contact with you at every stage.
Replace Your Roof Our crew completes the replacement using high quality materials and proven methods, with safety protocols in place to protect your home, family, and neighbors throughout the process.
Inspect Our Work A detailed final inspection confirms every aspect of the replacement meets our standards and manufacturer specifications.
Peace of Mind Standard residential installations are backed by our 10 year workmanship warranty. MaxFlow System installations qualify for a lifetime workmanship warranty.

Cleaner Air With 3M Protection

What You Can Expect From Flow

PROTECTING YOUR INVESTMENT

Your roof is a major investment in your home, especially in a climate where constant rain and moisture take a toll over time. Keeping your roof in top condition protects your home from the elements, prevents costly damage, and improves property value and curb appeal.

A TEAM OF ROOFING EXPERTS

Our licensed residential roofing professionals specialize in asphalt shingle roof replacement. After a thorough inspection, we provide a detailed written estimate and a clear scope of work so you know exactly what to expect. We install materials designed for the Pacific Northwest climate, ensuring your new roof is durable, reliable, and built to last.

CLEAR COMMUNICATION THROUGHOUT YOUR ROOFING PROJECT

Clear communication is essential for a successful roof replacement. We keep you informed at every stage, from inspection through completion, so you always know the status of your project. Timelines, expectations, and next steps are clearly communicated for a smooth experience.

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DISCUSS
YOUR NEEDS

Every homeowner qualifies for a free 25 point inspection. We’ll examine your roof and recommend the best options for your home.

CREATE A CUSTOM PLAN

We’ll create a plan based on the route you decide to go. Our team will remain in contact with you at every stage of the process.

UPGRADE

OR REPLACE YOUR ROOF

Next, it’s time to build your roof. Our crew is dedicated to making sure you and your neighbors are safe throughout the process.

INSPECT OUR WORK

Our team will inspect your roof using our thorough checklist and making sure every detail has been attended to with care.

ENJOY PEACE

OF MIND

Feel confident that your roof is in great shape. We guarantee satisfaction with our 10-year workmanship warranty.

A Roof That Pays You Back

Like any major home improvement, a new roof can meaningfully increase the value and equity of your home. Flow Roofing uses 100 percent American made materials backed by industry leading manufacturer warranties. Our installation techniques follow manufacturer training and guidelines because a warranty is only as strong as the installation behind it. The goal is simple. Put a roof on your home that protects it for decades and gives you the documentation to prove it.

FINANCING AVAILABLE

Roofing projects are easier to budget with flexible financing. Over 75 percent of our customers use financing to manage costs. Even with less than perfect credit, our financing partners can help find a fit.

TOP RATED WARRANTIES

The strongest protection on the market is a transferable 50 year asphalt shingle warranty from the nation's leading manufacturers. Flow Roofing installs advanced asphalt roofing systems designed for long term performance.

SEE WARRANTY