When it comes to choosing a roofing manufacturer, one question often dominates the conversation: Who is the largest roofing manufacturer in the world? At the forefront of innovation, product diversity, and global footprint stands one undisputed leader — GAF. However, to fully understand this title, we must dive deep into the metrics that define “largest”: market share, manufacturing capacity, product diversity, global distribution, and brand recognition.
GAF – The Undisputed Leader in the Roofing Industry
GAF (General Aniline & Film) is the largest roofing manufacturer in North America, with a legacy that spans more than 130 years. Headquartered in Parsippany, New Jersey, GAF is a subsidiary of Standard Industries, a global industrial company.
Key Highlights of GAF:
- Over 3,700 employees
- 34 manufacturing operations across the U.S.
- Produces more than 1 billion square feet of shingles annually
- Holds the largest market share in asphalt shingles
- Offers an extensive range of residential and commercial roofing products
- Backed by a world-class warranty program
GAF’s flagship products, such as Timberline® HDZ Shingles, are household names in residential roofing and have received consistent accolades for quality and durability.
At ASAP Roofing & Exteriors, we proudly install and recommend GAF products for their unmatched performance and longevity. Learn more about our residential roofing services and how we bring top-tier materials directly to your home.
Other Major Roofing Manufacturers to Know
While GAF holds the crown, several other giants in the roofing sector are worth highlighting. These companies contribute significantly to the roofing ecosystem and compete closely in various segments and global markets.
Owens Corning
A publicly traded company headquartered in Toledo, Ohio, Owens Corning is another major force in the industry. Known for both roofing and insulation products, Owens Corning has been ranked on the Fortune 500 list and is considered a leading innovator in energy efficiency.
Owens Corning Stats:
- Operations in 33 countries
- Over 19,000 employees
- Highly reputable TruDefinition® Duration® Shingles
- Strong presence in sustainability and recycled content usage
CertainTeed
A subsidiary of global building materials leader Saint-Gobain, CertainTeed manufactures a full range of roofing materials for both residential and commercial applications.
Noteworthy Features:
- Offers designer, luxury, and strip shingles
- Known for their Landmark® Series Shingles
- Commitment to environmentally responsible manufacturing
- Strong network of certified contractors
We use CertainTeed shingles in our premium roof replacement projects, ensuring our customers get both beauty and durability.
IKO Industries
IKO is a Canadian-owned company with a powerful North American and global presence. With over 70 years of manufacturing excellence, IKO continues to scale across residential and commercial roofing sectors.
IKO’s Advantages:
- Multiple manufacturing plants across North America and Europe
- Offers innovative systems like the ArmourZone™
- Strong performance in cold-weather durability
TAMKO Building Products
TAMKO, based in Joplin, Missouri, is a respected name in asphalt shingles and roofing products. They have been manufacturing since 1944 and continue to maintain a family-owned legacy.
TAMKO Strengths:
- Offers Heritage® Series shingles
- Focuses on technology-driven product lines
- Known for rich color blends and aesthetic appeal
Malarkey Roofing Products
Malarkey, though smaller in scale than GAF or Owens Corning, has built a loyal following due to its focus on sustainability, performance, and innovation.
Why Malarkey is Noteworthy:
- First to incorporate smog-reducing granules
- Products made with recycled materials
- Unique NEX® Polymer Modified Asphalt Technology
Global Players in Roofing Manufacturing
While the North American market is dominated by GAF and Owens Corning, international roofing manufacturers also play a significant role on the world stage.
BMI Group (Braas Monier and Icopal)
Formed from the merger of Braas Monier and Icopal, BMI Group is Europe’s largest manufacturer of roofing and waterproofing products, now also under Standard Industries.
- Operations in more than 40 countries
- Specializes in pitched roofing and flat roofing systems
- Offers both clay and concrete tiles
Monier Group
Before its acquisition, Monier Group was a major name in clay roof tile manufacturing, with historical roots going back over 100 years in Europe and Asia-Pacific.
What Makes a Roofing Manufacturer the ‘Largest’?
1. Market Share
GAF consistently leads the U.S. residential roofing market with the largest share. Market dominance is defined not just by production capacity, but also by distribution reach and brand loyalty.
2. Manufacturing Capacity
With 34 production plants, GAF outpaces its competition in terms of output volume and logistics capabilities.
3. Product Diversity
A complete roofing system isn’t just shingles. GAF and its top competitors offer underlayment, ventilation systems, flashing, starter strips, adhesives, and accessories — giving contractors and homeowners a full-spectrum solution.
4. Innovation and Patents
GAF invests heavily in R&D, holding multiple patents that have improved wind resistance, algae protection, and installation processes.
5. Warranty Programs
The strength of a roofing manufacturer is also seen in the confidence of its warranties. GAF’s Golden Pledge® Warranty is considered one of the best in the industry.
For property owners in Utah seeking roofing excellence backed by major manufacturers, our roof inspection and repair services ensure you’re protected from leaks, wind, and hail.
Conclusion: GAF Reigns Supreme Among Roofing Manufacturers
If the question is, “Who is the largest roofing manufacturer?”, the answer is clear — GAF stands at the top by virtually every metric. However, the roofing industry is vast and evolving. While GAF leads, the competition continues to bring innovation, sustainability, and aesthetic advancements to the market. The best manufacturer for your needs depends on your location, project requirements, and material preferences.
Whether you’re a homeowner, contractor, or commercial builder, aligning with a proven manufacturer like GAF ensures quality, performance, and peace of mind.
For Utah property owners looking to partner with a certified, experienced contractor, visit our official website or check out our verified Google Business Profile for customer reviews and recent project photos. From storm damage restoration to commercial roofing solutions, we’ve got you covered.