Producer
Owens Corning
#2 US roofing shingle manufacturer; also world's largest fiberglass insulation maker; produces fiberglass mat for own shingles and sells to competitors; NYSE: OC
2
Inputs supplied
1
Goods downstream
1
Facilities
0
Stories
What they make
2 inputs Owens Corning supplies
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Where it shows up
Goods downstream
Essential goods that depend on something Owens Corning makes — pick one to see the full supply chain.
What else they do
Business segments
The company's full revenue map — where this supply-chain role fits within their broader business.
Roofing (Shingles & Accessories)
35%Insulation
35%Composites
20%Other Building Products
10%
Intelligence
What's known
Sourced claims about this company's role in supply chains — chokepoints, concentration, incidents, dual-use connections.
Did you know2023
Owens Corning is simultaneously the #2 US roofing shingle manufacturer and the dominant supplier of fiberglass mat -- the structural backbone of every asphalt shingle -- to its own competitors, including market leader GAF. Owens Corning controls approximately 40% of US fiberglass mat supply used in roofing. This means GAF, which beats Owens Corning in the shingle market, depends on Owens Corning for its primary raw material input. When hurricanes drive simultaneous demand spikes, Owens Corning must allocate fiberglass mat between its own shingle production and competitor orders -- a conflict of interest that has no neutral resolution. Regulators have not classified this vertical integration as anticompetitive, but the supply dependency is structural and persistent.
Owens Corning ↗Chokepoint2023
Owens Corning Composites division produces glass fiber reinforcements used not only in roofing but also in wind turbine blades, boat hulls, automotive body panels, and aerospace components. The same glass fiber roving manufactured in Anderson SC or Taloja India can end up in a residential attic, a 100-meter offshore wind blade, a fiberglass kayak, or a commercial aircraft floor panel. This cross-industry supply creates a demand aggregation effect: when wind energy investment surges (as it did 2020-2022), glass fiber capacity tightens for all applications including roofing, which contributed to extended lead times and price increases in the residential construction market.
Owens Corning ↗Origin2023
Owens Corning traces its origin to a 1938 joint venture between Owens-Illinois (glass bottles) and Corning Glass Works (specialty glass), formed specifically to commercialize fiberglass after researchers accidentally discovered that glass could be drawn into fibers. The company pioneered fiberglass insulation during WWII for military applications -- lightweight insulation for aircraft, pipe wrapping for naval vessels -- before pivoting to residential insulation postwar. It trademarked its pink color in 1985, becoming one of the few companies to own a single color as a trademark (alongside Tiffany blue and UPS brown). Its composites division eventually became the supplier of the same fiberglass mat used in competitors' products, including GAF's market-leading shingles.
Owens Corning ↗