Commercial Roofing in New Hampshire

Commercial Roofing Solutions That Keep Your Business Covered

Commercial roofing in NH. Marquis Roofing installs, replaces and repairs roofs on retail buildings, offices, warehouses, churches and other commercial properties across New Hampshire, from flat and low-slope EPDM rubber roofs to standing seam metal. Every project starts with a free estimate and a clear written proposal.

At Marquis Roofing, we understand that your commercial property is more than just a building—it’s the foundation of your business. That’s why we provide professional commercial roofing services designed to protect your investment and keep operations running smoothly. Serving businesses across New Hampshire, we specialize in high-quality roofing solutions including flat roofs, EPDM, standing seam metal roofs, repairs & maintenance, and emergency leak response. Whether you own a retail space, office building, warehouse, or industrial facility, our team delivers.

With over 25 years of experience in the roofing industry, we’ve built a reputation for durability, efficiency, and attention to detail. Our crews are fully trained, never first-timers, and committed to finishing every project on time and within budget. We use only the highest-quality materials and offer warranties that stand among the best in the industry. From small repairs to complete roof installations, Marquis Roofing provides the expertise and craftsmanship needed to give your business lasting protection.

From flat roof repairs to full commercial roof installations, Marquis Roofing delivers reliable, long-lasting protection for New Hampshire businesses.

We offer a 100% satisfaction guarantee that includes a lifetime warranty on most of the roofing materials and a 25 year labor warranty. We guarantee you will be happy with the work!

100% Satisfaction Guarantee

We offer a 100% satisfaction guarantee that includes a lifetime warranty on most of the roofing materials and a 25 year labor warranty. We guarantee you will be happy with the work!

Tailored Roofing Solutions for Every Type of Business

Flat Roof Installation & Replacement

Flat roof installation and replacement provides durable, weather-resistant protection for commercial and residential properties with low-slope roofing needs using quality materials.

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Rubber (EPDM) Roofing Systems

Rubber (EPDM) roofing systems offer a cost-effective, long-lasting solution for flat or low-slope roofs, providing exceptional waterproofing and resistance to New England’s toughest weather conditions.

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Standing Seam Metal Roofing

Standing seam metal roofing delivers unmatched strength, energy efficiency, and modern curb appeal, with interlocking panels that provide superior protection against leaks and harsh weather.

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Roof Repair & Maintenance

Commercial roof repairs and maintenance extend the lifespan of your roofing system by addressing leaks, damage, and wear early, ensuring your business stays protected.

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Emergency Leak Response

Emergency leak response provides fast, reliable service to quickly locate and repair roof leaks, minimizing water damage and protecting your home or business from costly disruptions.

(603) 825-4140

Inspections & Reports for Insurance

Roof inspections and reports for insurance provide detailed documentation of your roof’s condition, helping homeowners and businesses validate claims, and confirm coverage.

The Commercial Roofing Partner You Can Rely On

At Marquis Roofing, we are the trusted experts in commercial roof installation and replacement across New Hampshire. Businesses rely on us because:

25+ Years of Local Expertise – Trusted commercial roofing services backed by decades of hands-on experience in New Hampshire.
Licensed, Bonded & Insured – Full protection and peace of mind on every project, no matter the size.
Safety-Certified Crews – OSHA-trained professionals who follow strict safety-first practices on every job site.
Clear, Transparent Proposals – Detailed project plans with upfront pricing—no hidden costs, ever.
Premium, Warranty-Backed Materials – We use only top manufacturer products for long-lasting performance.
Efficient Project Management – Fast response times, streamlined communication, and professional oversight from start to finish.

What Affects Commercial Roofing Cost?

Every commercial building is different, so every proposal is built around your roof. The main cost factors are:

Roof size and system – EPDM rubber and flat roofing, standing seam metal and shingle systems all differ in material and labor.
Tear-off and insulation – how many existing layers come off and whether insulation needs replacing.
Deck condition – damaged or wet decking has to be repaired before the new roof goes on.
Penetrations and equipment – HVAC units, vents, skylights and drains all need careful flashing.
Access and height – building height, staging and site access.

Every project starts with a free estimate and a clear written proposal. For metal systems, our metal roof cost guide shows typical price ranges, and financing is available.

Our Commercial Roofing Process

From the first site visit to the final walkthrough, here’s how a commercial roofing project with Marquis Roofing comes together.

Site Visit & Roof Assessment

We inspect the roof surface, drainage, flashing and penetrations, and document what we find with photos.

Clear Written Proposal

You get a detailed proposal with the scope, materials, warranty and upfront pricing, with no hidden costs.

Scheduling & Safety Planning

We plan staging, access and job-site safety with OSHA-trained crews, so your property stays safe while work is underway.

Installation & Final Walkthrough

Your new roof system is installed to manufacturer specifications, then we clean up and walk the finished roof with you.

Commercial Roofing FAQs

What types of commercial roofs do you install?

We install and replace flat and low-slope EPDM rubber roofs, standing seam metal roofs and asphalt shingle roofs for steep-slope commercial buildings, along with repairs and maintenance on existing roofs.

How long does a commercial roof last?

It depends on the system and how well it’s maintained. EPDM rubber roofs commonly last 20 to 30 years, and standing seam metal can last 40 to 60 years or more. Regular inspections and prompt repairs help any roof reach the long end of its range.

Can my roof be repaired instead of replaced?

Often, yes. If the damage is limited and the membrane or panels are in good shape, repairs and maintenance can extend the roof’s life. After inspecting the roof, we’ll tell you honestly whether repair or replacement makes more sense.

Do you provide roof inspections and reports for insurance?

Yes. We inspect commercial roofs and provide detailed documentation of their condition to help with insurance claims and coverage. See our guide to storm damage and insurance claims.

Do you handle emergency roof leaks?

Yes. If water is coming into your building, call (603) 825-4140 or see our emergency roof leak repair service.

What should I look for in a commercial roofing company?

Look for proper licensing and insurance, safety-trained crews, a clear written proposal and solid warranties. Our guides on what to look for in a commercial roofing company and questions to ask before hiring cover the details.

What areas do you serve?

We serve businesses throughout southern and central New Hampshire, including Manchester, Concord, Nashua and dozens of surrounding towns. See our full service area.

Our Work Speaks for Itself

Browse our image gallery to see the quality and craftsmanship that set Marquis Roofing apart. From residential shingle installations to large commercial projects, our team takes pride in delivering exceptional results every time. Ready to start your project? Contact us today and let’s add your roof to our gallery of success stories.

Derry, NH – Asphalt Shingle Replacement

Nashua, NH – Commercial Roof Replacement

Candia, NH – Metal Roof Installation

Nashua, NH – Metal Roof Installation

What Our Clients
Are Saying About Us

Our customers are the heart of our business, and their feedback says it all. Homeowners and business owners across New Hampshire trust Marquis Roofing for quality, reliability, and lasting results. Read what our satisfied clients have to say about their experience working with our dedicated roofing team — and don’t forget to share your own review!

140+ Google Reviews

    
 
 
      Trustindex verifies that the original source of the review is Google. I looked for someone to evaluate our roof because we had developed a few leaks. Heath Marquis came out almost immediately and provided us with information on where he thought the failures might be and the cost for the repairs. He was professional and confident which helped us make our decision to move forward with the work. The work has been completed and we are feeling confident that the leaks have been fixed.
  
  Posted on Google  
 
    
   Nancy Bishop 
 January 12, 2026
 
 
 
     Trustindex verifies that the original source of the review is Google. The Kelly’s are the best service team in New Hampshire
  
  Posted on Google  
 
    
   Melford Okereke 
 December 18, 2025
 
 
 
     Trustindex verifies that the original source of the review is Google. A beautiful high quality metal roof was installed by Josh and his crew on our multi roof lined, partial log home!! From Brad, who gave us a quote, to Josh and his crew, it was a professional well executed plan to remove our shingle roof and install a top quality metal roof. The craftsmanship of the installers exceeded our expectations. Our house, a combination of 4 different roof lines, needed a team that could produce tight fitting panels and trim from their workshop in our driveway. We can’t be happier with our decision to go with Marquis Roofing! Kudos to the team and thanks again!!! The picture was prior to completion, but I had to add it because it looks terrific!
  
  Posted on Google  
 
    
   Paul S (Old Ski Bum) 
 December 16, 2025
 
 
 
     Trustindex verifies that the original source of the review is Google. I had an asphalt roof replacement done on my home and 2 skylights replaced . Great service, Great communication from start to finish , very pleased with the crew and the service provided. Highly recommend!
  
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   Nicole 
 December 14, 2025
 
 
 
     Trustindex verifies that the original source of the review is Google. Communication with the office team was not the best as calls were not returned on more than one occasion. However , the installation team did a great job, worked very efficiently, and roof looks great.
  
  Posted on Google  
 
    
   Michael Dahood 
 December 12, 2025
 
 
 
     Trustindex verifies that the original source of the review is Google. Marquis Roofing performed a roof washing on our  home. Tom arrived and explained the process step by step and I recieved my estimate the same day. I will say they are very reasonably priced ! The crew arrived and exceeded our expectations! They were very professional and prompt . Our roof looks brand new! Thank you Marquis Roofing. I will recommend you to fellow colleagues and family ! ☆☆☆☆☆
  
  Posted on Google  
 
    
   Ava Voge 
 December 9, 2025
 
 
 
     Trustindex verifies that the original source of the review is Google. Scott and Chris were very professional and personable. They did a small repair at our house and were pleasant and efficient. It was nice to have the work properly done. I will recommend Marquis to friends and family in the future.
  
  Posted on Google  
 
    
   Alan Craig 
 November 28, 2025
 
 
 
     Trustindex verifies that the original source of the review is Google. Second time using Marquis Roofing. The first time they came over with an unbeatable quote to install my metal roof and this time was to install a snow retention system (snow rails). Once again the pricing was perfect, 2 other companies quoted close to double for this type of job. Quick install and a must have if you have a metal roof.
  
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   Matthew Collins 
 November 26, 2025
 
 
 
     Trustindex verifies that the original source of the review is Google. Tom and the team at Marquis are fantastic.
Had our roof done a few years back and the team was on time, professional, worked hard, and made sure all my concerns were addressed.
Fast forward a few years and had an issue with an older part of our roof not done by Marquis, and they still came right out. Heath solved the issue and addressed all of my concerns.

I cannot recommend Marquis highly enough
  
  Posted on Google  
 
    
   Taylor Hall 
 November 25, 2025
 
 
 
     Trustindex verifies that the original source of the review is Google. I recently had a standing seam metal roof installed by Marquis Roofing. They were professional, timely and gave me an outstanding finished product. Highly recommend!
  
  Posted on Google  
 
    
   chris whiting 
 November 12, 2025