North Central Montana’s #1 Commercial Roofing Company

Providing Roofing, Gutter Installation, and Foundation Repair Services Since 2006

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 24-Hour Emergency Services

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Over 20 Years of Experience

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 Military Discounts & Return Customer Discount

The Experts in Commercial Roofing Service in Great Falls

 

trusted Commercial Roofing Services Great Falls, MT

When your business relies on a solid, leak-free roof, there’s no room for guesswork. A-1 Contractors, Inc. is Great Falls’s trusted name in commercial roofing, delivering reliable, efficient, and long-lasting roofing solutions backed by over two decades of experience. We understand the demands of local weather, and we work around your schedule to minimize downtime.

Our expert Great Falls roofing team handles everything from complex flat roofing systems to energy-efficient membrane replacements—all with professionalism and precision. Whether you’re protecting a warehouse, retail space, or office building, we help make sure your business stays open, dry, and protected.

Protect your investment with Great Falls’s commercial roofing pros.

Types of Commercial Roofs We Install

We install a variety of high-performance commercial roofing systems built for durability and energy efficiency.

EPDM Roofing

EPDM (Ethylene Propylene Diene Monomer) is a cost-effective rubber membrane ideal for flat and low-slope roofs. It offers excellent UV resistance and performs well in cold climates, making it a smart choice for Great Falls businesses.

PVC Roofing

PVC (Polyvinyl Chloride) roofing is known for its long lifespan, chemical resistance, and strong waterproofing capabilities. It’s ideal for restaurants or businesses that deal with grease, oils, or harsh runoff.

TPO Roofing

TPO (Thermoplastic Olefin) is an affordable, reflective, and energy-efficient membrane that’s perfect for businesses looking to reduce cooling costs. It’s easy to install and maintain, with great performance in a range of weather conditions.

Roof Coatings

Roof coatings add an extra layer of protection to any roofing project so that your roof’s integrity is secure. They can also be used on older roofs that are becoming less effective against the climate. Rolled or sprayed roof coatings are a smart way to make sure your roof is and stays sealed year after year. Moreover, if the roof does start to wear thin, add another coat, and you’ll be ready for the next decade of wear and tear.

Flat Roofing

Flat roofing is popular in many commercial buildings due to the great protection and minimal maintenance they offer. Because flat roofs have almost no slope, a proper installation is required to avoid any future problems. We’ll be happy to walk you through your options to see whether or not a flat roof is right for your building, as well as how to best maintain your flat roof going forward.

Commercial Roofing Comparison Table

Feature EPDM Roofing PVC Roofing TPO Roofing
Lifespan 20–30 years 25–30 years 20–30 years
Cost (Initial) Lower Higher Moderate
Energy Efficiency Moderate High High (reflective surface)
Chemical Resistance Moderate Excellent Moderate
Installation Speed Fast Moderate Fast
Ideal Use Offices, warehouses Food service, chemical exposure Retail, mixed-use

Roofing Services We Offer

Commercial Roof Installation

Our team designs and installs durable, energy-efficient commercial roofing systems that meet your building’s needs and budget while ensuring long-term performance.

Commercial Roof Repair

From emergency leaks to long-term wear and tear, we provide fast, accurate, and dependable commercial roof repairs that prevent disruptions and extend your roof’s life.

Commercial Roofing Replacement

When your roof is aging or failing, we offer full-system commercial roof replacement services that improve insulation, reflectivity, and durability, all with minimal downtime to your business.

Commercial Projects We Work On

From commercial buildings to multifamily apartment complexes, we provide commercial services to a wide variety of clients. This includes:

Commercial Roofing FAQs

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What type of roofing is best for my commercial building?

The best roofing system depends on your building’s structure, usage, and exposure to environmental stressors. We’ll help you choose between EPDM, PVC, or TPO based on performance, budget, and your long-term goals.

How long does a commercial roof typically last?

Most commercial flat roofing systems last between 20–30 years, depending on materials and maintenance. Regular inspections and timely repairs can significantly extend that lifespan.

Can you install a new roof without disrupting my business?

Yes. We work efficiently and can schedule work during off-hours or in stages to reduce disruption. Our crews prioritize cleanliness, safety, and clear communication to keep your operations running smoothly.

Do you offer commercial roof inspections and maintenance?

Absolutely. Regular inspections help identify minor issues before they escalate. We offer professional maintenance programs tailored to commercial buildings of all sizes.

Choose A-1 Contractors, Inc. as Your Commercial Roofing Company

With over 20 years of experience, a commitment to quality, and unmatched local expertise, A-1 Contractors, Inc. is the trusted choice for commercial roofing in Great Falls.

Let us help protect your business

The Best Roofing North Central Montana Can Provide

A-1 Contractors, Inc. IconA-1 Contractors, Inc.

2755 Fern Dr, Great Falls

4.8 55 reviews

  • Avatar kristine conover ★★★★★ a week ago
    We highly recommend A-1 contractors! What professionals! And they aren’t kidding when they say no job too big or too small. We needed a new roof on a small … More home in the mountains, and we needed it before fall weather set in. Joe, Beau, Jacob, Jose, Sean and Bird fit us in and made the drive out to help us on a Sunday. With A-1 we didn’t have to worry about a thing. They were prompt, prepared, and there were no additional or unexpected costs added to our original estimate. The roof was completed as if by magic, and when they left there was no trace of them having been there at all, except for a beautifully installed roof.
    I love the fact that the company is family owned, now with their second or third generation of family members in charge, and also appreciate the fact that Joe, one of the owners, came out to work side by side, with the rest of his crew. The precision of their work was impressive. It seemed as if every move was finely orchestrated. With their attention to quality and detail, you can tell that this is a team who has worked together for a while, almost making me wish that I needed another roof so that I could call them again.
  • Avatar Gregg Smith ★★★★★ a month ago
    We recently had A-1 re-do our vinyl flat roof on our home. They were great. They were prompt, professional and the price was exactly what they quoted us. … More The work is done well, and they are giving us a 5-year warranty on workmanship. The employees who showed up were courteous and friendly. This was a big and expensive job, and they were really top notch. I have no problem recommending them.
  • Avatar Amy Loncki ★★★★★ 3 years ago
    They are amazing! My mother needed a last minute replacement on her roof for the sale of the house. Within 24 hours they had the estimate back to us and … More the job scheduled. They did everything they had to so they could squeeze us in last minute. They job was done within two days! We have had roofs replaced before and usually find nails and wood all over the yard after. I couldnt believe how clean the yard was after! They really came through for us in a critical moment. We appreciate them and their professionalism so much!
  • Avatar Brooke James ★★★★★ a year ago
    This company was so great to work with! Every single person involved in the project conducted themselves in a professional and friendly manner.
    From the
    … More initial conversation to the completion of the project, everything was handled beyond my expectations.
    They were quick, communicative and respectful. We are impressed by how our project was handled and thrilled with the results.
    Our roof looks great!!
    I would recommend this company to anyone and can’t say enough good things! A few points that stood out to me the most:
    - I knew I wanted to do business with A-1 Contractors Inc. immediately after reading through the first page of their bid. It was thorough, informative, and gave me confidence in their abilities.
    - I was also impressed with their punctuality on the job site. The crew had arrived on time and within 5-10 minutes of their arrival our old roof was being taken off.
    - Every single crew member addressed us as “Sir” and/or “Ma’am” and had a smile on their face the entire time. It was very apparent that they liked each other and their job. There was a sense of pride amongst their team and it showed in their work.
    - Finally, our roof was completed in 2 days and our yard was left cleaner than when they arrived!! I couldn’t be more impressed.

SCHEDULE YOUR FREE ROOF ESTIMATE TODAY!

Hire a Team of Roofing Experts You Can Trust