Owens Corning
HQ US40% share
#2 US roofing shingle manufacturer; also world's largest fiberglass insulation maker; produces fiberglass mat for own shingles and sells to competitors; NYSE: OC
manufactured · input
Fiberglass Scrim Mat (Shingle Substrate)
Non-woven fiberglass mat is the structural reinforcement for asphalt shingles, replacing organic felt since 1980s; Owens Corning and Johns Manville produce >70% of US supply; also used in commercial TPO membranes
1
Source countries
4
Companies
1
Goods affected
0
Claims on record
What depends on it
Goods that need this input
1 essential American goods rely on fiberglass scrim mat (shingle substrate) somewhere upstream in their supply chain.
Where it comes from
Source countries
Share of global supply, by country.
| Country | Share of supply |
|---|---|
| USUnited States | 95% |
Who makes it
Supplier companies
4 companies produce fiberglass scrim mat (shingle substrate).
Johns Manville (Berkshire Hathaway)
HQ US35% share
Major fiberglass mat, insulation, and roofing products manufacturer; owned by Berkshire Hathaway; produces fiberglass scrim mat for asphalt shingles; Denver CO headquarters
GAF (Standard Industries)
HQ US15% share
Largest US roofing manufacturer; ~33% US asphalt shingle market share; subsidiary of Standard Industries (Koch network); also makes TPO/EPDM commercial membranes
CertainTeed (Saint-Gobain)
HQ US7% share
US roofing, insulation, and building products subsidiary of France's Saint-Gobain; #3 asphalt shingle manufacturer; also major gypsum wallboard and cement board producer