Commercial Flat Roofing Solutions Built to Last
Why Choose Flat Roofing for Your Commercial Property?
Practical, Versatile, and Cost-Effective
Flat roofing systems have become the gold standard for commercial properties across the Midwest, offering a blend of practicality, performance, and sleek architectural appeal. Their streamlined design reduces installation time and minimizes long-term maintenance costs, making them a cost-effective solution.
At Great Lakes Commercial Roofing, we specialize in custom-tailored flat roofing solutions that address your building’s unique needs, from climate resilience to structural compatibility. We utilize premium materials—including metal, EPDM, PVC, and modified bitumen—engineered for exceptional durability and energy efficiency.
With Great Lakes, you gain more than just a roof—you gain a reliable shield for your assets, your operations, and your future growth.
Commercial flat roofing is a future-forward system that helps protect your business and its operational efficiency by offering a wide range of tangible advantages. These advantages help make it a smart choice for commercial properties:
- Flat surfaces are ideal for HVAC systems, solar panels, and green roof applications, offering greater flexibility for rooftop installations.
- Installation is faster and more affordable, reducing labor costs and material waste.
- Maintenance access is safer and more convenient, with technicians able to walk the roof without steep inclines.
- Lower slope reduces the volume of materials required, without sacrificing proper drainage when installed correctly.
- Energy-efficient options like cool roofing membranes help lower utility bills and meet sustainability goals.
- Perfect for both new construction and retrofit projects, ensuring seamless integration into existing structures.
- Lightweight systems minimize structural load, reducing stress on older buildings or warehouses.
- Compatible with advanced drainage solutions, including internal drains, scuppers, and tapered insulation systems.
Learn More: Why Do Commercial Buildings Have Flat Roofs
Our Commercial Flat Roofing Services
At Great Lakes Commercial Roofing, we offer a comprehensive suite of commercial flat roofing services designed to protect, preserve, and enhance your property. Our solutions cover everything from initial inspections to full roof replacements—each tailored to your specific building type, occupancy, and long-term goals.
We specialize in systems including EPDM, PVC, modified bitumen, and metal, ensuring a match for your structure and budget. We also provide preventative maintenance to extend roof lifespan and roof coatings to improve energy efficiency and waterproofing. Each project is guided by clear communication, accurate timelines, and an experienced management team committed to minimizing disruption.
Our commercial flat roofing services are built for performance, durability, and peace of mind:
- New Commercial Flat Roof Installation – Ideal for new builds, our systems are engineered for longevity and efficiency from day one.
- Flat Roof Repair and Patching – We identify trouble spots and provide expert fixes to stop leaks and prevent further damage.
- Full or Partial Roof Replacement – When your roof reaches the end of its life, we offer tear-offs or overlays based on structural needs.
- Roof Coatings and Waterproof Membranes – Enhance performance and protect against water intrusion, UV rays, and thermal cycling.
- Preventative Maintenance Programs – Routine inspections and maintenance plans help you avoid costly surprises and extend your roof’s lifespan.
- Emergency Storm Damage Response – Quick, professional help after hail, wind, or water damage ensures your business stays operational.
- Material Expertise – We install and service metal, EPDM, PVC, TPO, and modified bitumen flat roof systems with confidence and care.
Flat Roofing Systems We Install
Every commercial building is built differently and has unique needs, and that’s why we offer a carefully selected range of commercial flat roofing systems—each chosen for its specific performance benefits, budget alignment, and ability to handle regional weather conditions with ease and durability over time.
Flat Roofing Systems We Offer:
- Metal Roofing: Strong, long-lasting, low maintenance
- EPDM Rubber Roofing: Flexible and weather-resistant
- PVC Roofing: Durable, reflective, chemical-resistant
- SPF Roofs: Lightweight, waterproof, and energy-saving
- Roof Coatings: Leak prevention, UV defense, reflective
Each flat roofing system we install brings unique advantages depending on your property’s structure, location, and usage:
Metal Roofing is one of the most durable and low-maintenance solutions, offering unmatched longevity and resistance to fire and extreme weather. It’s ideal for industrial buildings seeking minimal upkeep.
EPDM Rubber Roofing is lightweight and flexible, making it perfect for structures that need fast, economical installation. It handles fluctuating temperatures and UV exposure with ease.
PVC Roofing provides outstanding energy efficiency with its reflective surface and holds up against chemicals and fire, making it a favorite for restaurants, factories, and medical facilities.
Spray Polyurethane Foam (SPF) creates a seamless, monolithic surface while providing superior insulation properties that significantly reduce energy costs and temperature fluctuations throughout your building.
Roof Coatings extend the life of existing roofs by sealing small cracks, preventing leaks, and reflecting heat—boosting energy efficiency without a full replacement.
Quality Commercial Roofing
Fully Insured & Bonded
Assurance backed by comprehensive insurance and workers compensation coverage for complete peace of mind.
No Subcontracted Labor
Roofs are installed by trained technicians, no subcontractors. This means quality work Every. Single. Time.
Top Secret Clearance
Every employee is background checked, drug tested and has passed top security clearance.
Factory Trained
Expertise honed through rigorous training in top-tier manufacturing environments.
BBB A+ Rating
Recognized excellence validated by the Better Business Bureau’s highest honor.
Protect Your Investment with Expert Installation
The longevity and performance of commercial flat roofing depends not only on the quality of materials used but on the skill and precision of the installation itself. From substrate preparation to final inspection, we ensure every component is sealed, aligned, and secured to deliver watertight protection you can count on.
We specialize in complex commercial projects and work seamlessly across sectors—from office parks and warehouses to healthcare facilities and retail centers. Our team coordinates closely with property managers, general contractors, and stakeholders to reduce operational disruptions while maintaining tight control over scheduling and cost.
Our expert installation process is guided by strict attention to detail and adherence to industry standards. Here’s just a few of the key factors that make our approach reliable, thorough, and designed to protect your investment.
- Code Compliance: We follow all current local, state, and national building codes to ensure legal and safety standards are met or exceeded.
- Seamless Integration: Our team expertly handles transitions around rooftop HVAC units, skylights, vents, and drainage systems for a clean, efficient finish.
- Quality Control: In-house supervisors conduct multi-phase inspections during and after installation to ensure every detail meets our performance standards.
- Safety Protocols: We maintain strict job site safety procedures, including debris containment, fall protection, and hazard mitigation.
- Certified Techniques: All installations follow manufacturer-recommended methods, preserving warranty coverage and optimizing roof lifespan.
- Project Records: We provide complete documentation, including inspection reports, as-built plans, and warranty registration for your files.
Schedule a Flat Roofing Inspection Today
Whether you’re facing persistent leaks, deteriorating materials, or planning for a brand-new construction project, a professional roof inspection is the critical first step toward long-term protection and cost control. At BBB A+ rated Great Lakes Commercial Roofing, we offer free, no-obligation assessments that give you clarity and direction—before minor concerns become expensive problems.
Our experienced technicians conduct a thorough evaluation of your entire roofing system, identifying signs of damage, water intrusion, membrane separation, flashing issues, and more. After the inspection, we’ll walk you through a clear summary of findings, complete with photos, detailed recommendations, and honest repair or replacement options tailored to your goals and budget.
Whether you need quick patchwork or a complete overhaul, our goal is to protect your building and your bottom line. With Great Lakes, you’re not just fixing problems—you’re investing in long-term peace of mind.
Our Service Areas
- Dubuque, Iowa
- Cedar Rapids, Iowa
- Davenport, Iowa
- Madison, Wisconsin
- Waterloo, IA
- Iowa City, IA
- Clinton, IA
- Erie, PA
- Pittsburgh, PA
- Cleveland, OH
- Dubios, PA
- Warren, OH
- New Castle, PA
- Butler, PA
- Meadville, PA
Browse our Commercial Roofing Portfolio
Clinton Municipal Airport
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Ashley Furniture
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Dura-Bond Pipe Inc
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Appliance Dealers Co-Op
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Oolong Aisian Cuisine
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We have the experience!
495+
Customers
595+
Completed
Commercial Roofs
18+
Winning Awards
8+
Highly Trained
Project Managers
Testimonial
Don't take our word for it, hear from our customers!
Russell Jenkins
The guys from Great Lakes commercial roofing LLC were extremely professional. Kenneth came out and was extremely informative and knowledgeable in regards to roofing. We were extremely pleased with his work and the end product. We highly recommend Kenneth and the guys from Great Lakes commercial roofing
E Frogwell
When it comes to a company that will get the job done right you have to go with Great Lakes Commercial Roofing. Zac is easy to work with and very knowledgeable about many different products and options. Don’t make the mistake I did and call a contractor that is mainly a residential roofer to look at your industrial roof unless you like wasting money
Tom Havacheck
Great company to work with! I have a building in Pennsylvania but live in another state. My roof was leaking and Zac was sent out and did the inspection on the roof. When he was at the building he called and sent me a link to live pictures
Jason Bakus
These guys are awsome. Great job from start to finish. Did our large commercial catering hall. Always available if we have a question or concern. Roof looks great and best of all. No more leeks. Defiantly recommend
Matthew DeLibero
I’m very satisfied with my new roof. The installers worked around my schedule and did a nice job!
Conrad Miler
Your dedication to quality and service have made working with you a pleasure!
Barb Goliad
I called Great Lakes Commercial Roofing to come check out my building. I had a company put silicone roof coating on it 5 years ago and since day one it never stopped the leaking problems, the other company came out 5 times to “fix the problem” but never did. Zac came out and evaluated my problem and gave me a ton of information on the best solution to fix the problem.
Core Values - C.H.I.L.
- Communication: Maintaining open and clear communication with customers, employees, and vendors.
- Humility: Staying open to feedback, ideas, and other perspectives. Humility means recognizing that we’re all still learning — and better together.
- Integrity: Doing the right thing — even when no one’s looking.
- Loyalty: A deep commitment to the organization’s mission, values, and success.
Schedule a no-pressure roof assessment today!
Let our drone technology provide you with a precise, comprehensive roof evaluation. Using thermal imaging and advanced scanning, we’ll assess your roof’s condition and recommend the ideal roofing system for your commercial property.
Call us today!
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