Commercial Roofing Backed by a 10-Year Transferable Warranty

Commercial Roofing in Portland & Southern Maine

Commercial roof installation, repair, and maintenance built around your business, with minimal disruption to your operations.

A Commercial Roof That Protects Your Business, Not Just Your Building

A failing commercial roof isn't just a maintenance issue, it's a risk to your inventory, your equipment, and your ability to stay open. 1Call Roofing provides commercial roof installation, repair, and maintenance for businesses across Portland, South Portland, Scarborough, Westbrook, Saco, Biddeford, Old Orchard Beach, Gorham, and Falmouth, with the same 20+ years of roofing experience behind every commercial project as every residential one.

Commercial Roofing Systems We Install

Most commercial buildings need a different roofing approach than a residential home, and we install the systems that actually fit commercial applications:

- TPO (thermoplastic polyolefin), a reflective, energy-efficient single-ply membrane with heat-welded seams, a strong choice for buildings with significant cooling loads.

- EPDM (rubber membrane), a proven, cost-effective single-ply system with excellent cold-weather flexibility, well-suited to Maine's freeze-thaw climate.

- Metal roofing for sloped commercial buildings, offering the longest lifespan and lowest long-term maintenance of any commercial option.

We'll walk you through the real tradeoffs between systems for your specific building, not just push whichever one we happen to have the most supply of.

What Commercial Roofing Costs

Commercial roofing typically runs $3.50 to $14 per square foot depending on the system, with EPDM on the lower end, TPO in the mid-range, and metal roofing at the higher end for sloped applications. Upfront cost isn't the whole story: TPO's reflectivity can meaningfully reduce cooling costs over the life of the roof, while EPDM's lower upfront cost sometimes comes with slightly more frequent maintenance. We'll walk you through the full picture, not just the number on page one of the quote.

Minimizing Disruption to Your Business

We understand that a commercial roofing project happening over your head is a real operational concern, not just a construction project. Wherever possible, we schedule work around your operating hours, and for larger buildings, we can phase the project section by section so your building stays weather-tight and your business keeps running throughout.

Ponding Water: The Most Common Cause of Commercial Roof Failure

If there's one thing that shortens a commercial roof's life faster than anything else, it's standing water that doesn't drain properly. Ponding water accelerates membrane degradation regardless of which system is installed, and it's often the first thing we check during a commercial roof inspection. Proper drainage design and regular drain maintenance are two of the most important factors in how long your commercial roof actually lasts.

Commercial Roof Maintenance Programs

Commercial roofs benefit enormously from a proactive maintenance approach, and many manufacturer warranties actually require documented regular maintenance to stay valid. A solid maintenance routine, drain and gutter cleaning, seam inspections, and prompt minor repairs, can extend a commercial roof's life by 5 to 10 years and catch small problems before they become expensive emergencies. Roof maintenance isn't optional overhead on a commercial building, it's one of the highest-return investments you can make in the roof.

A 10-Year Transferable Warranty on Every Commercial Roof We Install

Every roof 1Call Roofing installs, residential or commercial, comes with our 10-year transferable warranty, in addition to any manufacturer material warranty that applies to the specific system installed. If you sell the property, that protection transfers with it.

Why Southern Maine Businesses Choose 1Call Roofing

Businesses across Portland, South Portland, Scarborough, Saco, Biddeford, Westbrook, and Greater Southern Maine trust 1Call Roofing with their commercial roofs because we treat a commercial project with the same seriousness as a residential one, on schedule, honest about what your building actually needs, and built to minimize disruption to your operations. With 20+ years of roofing experience, we know commercial systems as well as we know residential ones.

Your Commercial Roofing Questions, Answered

What types of commercial roofing systems do you install?

We install TPO and EPDM single-ply membrane systems for flat and low-slope commercial roofs, as well as metal roofing for sloped commercial buildings. The right system depends on your building type, budget, and energy goals, and we'll walk you through the tradeoffs honestly.

How much does commercial roofing cost?

Commercial roofing typically ranges from $3.50 to $14 per square foot depending on the system, with EPDM on the lower end, TPO in the mid-range, and metal roofing at the higher end for sloped applications. We provide a detailed, itemized estimate for your specific building.

How do you minimize disruption to my business during roofing work?

We schedule commercial projects around your operating hours whenever possible and can phase larger jobs section by section to keep the building weather-tight and your business running throughout the project.

Do commercial roofs need a maintenance program?

Yes, and many manufacturer warranties require documented regular maintenance to remain valid. A proactive maintenance program, including drain and gutter cleaning, seam inspections, and prompt minor repairs, can extend a commercial roof's life by 5 to 10 years.

What's the most common cause of commercial roof failure?

Ponding water is one of the leading causes of shortened commercial roof lifespan. Standing water that doesn't drain properly accelerates membrane degradation and can lead to leaks well before the roof's expected lifespan is reached.

What warranty do you offer on commercial roofing?

Every roof 1Call Roofing installs, residential or commercial, is backed by a 10-year transferable warranty, in addition to any applicable manufacturer material warranty on the system installed.

Protect Your Business With a Commercial Roof Built to Last

Get an honest system recommendation and a project plan built around keeping your business running.