Roofer         Distributor         Design Pro         Owner

Why Choose GenFlex Roofing Systems?

Simpler, Smarter, More Accessible Commercial Roofing.

At GenFlex, we believe commercial roofing should not be complicated. That’s why we offer proven, straightforward systems engineered for reliable performance and installation ease, backed by training and tools to equip you for success.

A worker in a green shirt and cap kneels on a roof, using a power tool to secure a white roofing material. He has a tool belt and a white bucket nearby. | GenFlex

Roofer Focused

Dependable systems, practical training and genuine partnerships.

Jobsite Ready

Products with proven performance that are readily available and designed for fast, easy installation.

Optimized Product Offering

Streamlined, practical product offering backed by a trusted brand and experts who know roofing.

Reliable Support

Agile, responsive sales and technical teams with tools to maximize your success.

More Than a Manufacturer

With over 40 years of low-slope roofing expertise, GenFlex has built a legacy of reliability, performance and practical innovation. Our streamlined product line is designed for simplicity —  easy to stock, easy to sell and easy to install. We serve as the bridge between big brand capability and everyday contractor accessibility, bringing opportunity, simplicity and partnership to the roofing industry.

Manufacturing | GenFlex

GenFlex Licensed Roofer Community

Proper installation is critical to a long-lasting roof. That’s why we have created our comprehensive GenFlex Licensed Roofer program. Through this program, we provide training in roof design and installation basics, continuing education and one-on-one support to our licensed roofer community. Every GenFlex roof is installed by highly trained professionals, backed by our expert GenFlex team.

Workers | GenFlex

Over Four Decades of Growth and Innovation

The GenFlex brand carries a legacy of technical expertise, testing and product advancement, with origins dating back to one of the pioneering companies in polymers and reinforced plastics. Today, we remain future-focused and driven to provide the highest quality products possible, with an experienced team ready to work with you every step of the way.

Our History

The Beginning

GenFlex Building Products is founded in Maumee, Ohio, as one of the first dedicated single-ply commercial roofing manufacturers, with a focus on delivering practical, installer-friendly systems that could compete with traditional built-up roofing.

EPDM Membrane Launch

GenFlex introduces its first EPDM membrane systems, featuring reinforced and non-reinforced sheets designed for ballasted, adhered and mechanically attached installations. The brand becomes known for reliable product performance and responsive technical support.

Adhesives and Accessories

Expansion into primers, adhesives and flashing accessories gives roofers a complete, compatible system — an early move toward the “single source” concept still valued today.

TPO Membrane Development

GenFlex begins developing thermoplastic polyolefin (TPO) systems, anticipating the industry’s shift toward heat-welded membranes that offer cleaner installation and reflective surfaces.

Omnova Solutions Acquisition

Omnova acquires GenFlex, providing resources for national expansion and manufacturing scale.

GenFlex TPO Launch

The commercial release of GenFlex TPO positions the brand as a leader in value-driven, single-ply innovation—offering lightweight, reflective and energy-efficient systems that are easy to install and maintain.

Firestone Acquisition

Firestone acquires GenFlex to strengthen its position in the value and distribution-focused segments of the roofing market. GenFlex gains access to larger-scale manufacturing, testing and R&D capabilities while maintaining its independent identity and installer-first culture.

Systems Expansion

GenFlex expands into fully adhered TPO, self-adhered systems and enhanced warranties to meet evolving code and performance standards. Product line grows to include polyiso insulation, cover boards and edge metal, offering distributors complete system coverage.

Holcim Acquisition

Firestone Building Products (including GenFlex) is acquired by Holcim, marking the brand’s integration into a global building materials leader. This sets the stage for renewed investment and modernization.

Amrize Building Envelope Formation

Holcim restructures its Building Envelope division into Amrize, establishing GenFlex as one of its core commercial roofing brands, targeting new-to-commercial and mid-tier roofers through distributor-centric growth.

Brand Resurgence

GenFlex redefines its strategic pillars and launches smaller TPO and EPDM roll sizes, ModBit and ModBit SA and asphalt-based systems.

Nationwide Locations to Serve You

A map of the United States showing states in two shades of green. Some states are light green, while others are a darker green, indicating a comparison or grouping by category. No labels or text are present. | GenFlex

A gray parallelogram and a green triangle are arranged on a light gray background, with the green triangle pointing downward and touching the bottom edge of the gray shape above it. | GenFlexCorporate Headquarters


26 Century Boulevard, Suite 205
Nashville, TN 37214 

EPDM Manufacturing
Prescott Plant


1406 US Highway 371 N.
Prescott, AR 71857  

Asphalt-Based Manufacturing
Beech Grove Plant


3525 S. Arlington Avenue
Beech Grove, IN 46203

Polyiso Insulation Manufacturing
Bristol Plant


780 James P. Casey Road
Bristol, CT 06010

Polyiso Insulation Manufacturing
Corsicana Plant


4201 E. Highway 31
Corsicana, TX 75109

Polyiso Insulation Manufacturing
DeForest Plant


612 N. Stevenson Street
DeForest, WI 53532

Polyiso Insulation Manufacturing
Florence Plant


8170 Holton Drive
Florence, KY 41042

Polyiso Insulation Manufacturing
Jacksonville Plant


6831 Stuart Avenue
Jacksonville, FL 32254

Polyiso Insulation Manufacturing
Salt Lake City Plant


6534 West 150 S.
Salt Lake City, UT 84104

Polyiso Insulation Manufacturing
Youngwood Plant


195 Avenue A, Apartment A
Youngwood, PA 15697

Thermoplastic Manufacturing
Muscle Shoals Plant


393 Denton Circle
Tuscumbia, AL 35674

Metal Manufacturing
Anoka Plant


1001 Lund Boulevard
Anoka, MN 55303

Distribution Centers/Warehouses
Mt. Joy Facility


1055 Strickler Road
Mt. Joy, PA 17552

Distribution Centers/Warehouses
Plainfield Plant


2375 Reeves Road, Ste 190
Plainfield, IN 46168

Thermoplastic Manufacturing
Wellford Plant


2375 320 Innovation Way
Wellford, SC 29385

Sample Warranties

TitleLink
Commercial Building Membrane Limited Warranty (Tear-Off Warranty)_Distributors_2021
GenFlex Lifetime Residential Material Limited Warranty
GF-Limited Membrane Only-10-20-Yrs-SAMPLE
Paint Finish Warranty – 35 Yrs – SAMPLE 2008
Roofing System Limited Warranty – 5-20 years – 100 MPH – CP – SAMPLE 2003
Roofing System Limited Warranty – 5-20 years – 100 MPH – Hail – CP – SAMPLE 2003
Roofing System Limited Warranty – 5-20 years – 100 MPH – Hail – SAMPLE 2003
Roofing System Limited Warranty – 5-20 years – 100 MPH – SAMPLE 2003
Roofing System Limited Warranty – 5-20 years – 55 MPH – CP – SAMPLE 2003
Roofing System Limited Warranty – 5-20 years – 55 MPH – Hail – CP – SAMPLE 2003
Roofing System Limited Warranty – 5-20 years – 55 MPH – Hail – SAMPLE 2003
Roofing System Limited Warranty – 5-20 years – 55 MPH – SAMPLE 2003
Roofing System Limited Warranty – 5-20 years – 72 MPH – CP – SAMPLE 2003
Roofing System Limited Warranty – 5-20 years – 72 MPH – Hail – CP – SAMPLE 2003
Roofing System Limited Warranty – 5-20 years – 72 MPH – Hail – SAMPLE 2003
Roofing System Limited Warranty – 5-20 years – 72 MPH – SAMPLE 2003
Roofing System Limited Warranty – 5-20 years – 80 MPH – CP – SAMPLE 2003
Roofing System Limited Warranty – 5-20 years – 80 MPH – Hail – CP – SAMPLE 2003
Roofing System Limited Warranty – 5-20 years – 80 MPH – Hail – SAMPLE 2003
Roofing System Limited Warranty – 5-20 years – 80 MPH – SAMPLE 2003
Roofing System Limited Warranty – 5-20 years – 90 MPH – CP – SAMPLE 2003
Roofing System Limited Warranty – 5-20 years – 90 MPH – Hail – CP – SAMPLE 2003
Roofing System Limited Warranty – 5-20 years – 90 MPH – Hail – SAMPLE 2003
Roofing System Limited Warranty – 5-20 years – 90 MPH – SAMPLE 2003