Key Players
- Owens Corning
- Malarkey Roofing Products
- GAF Materials Corporation
- ELK Products Inc.
- Atlas Roofing Corporation
- Decra Roofing Systems, Inc
- CertainTeed Corporation
- Tamko Building Products, Inc.
- IKO Industries, Inc.
- Tesla, Inc.
- Dura-Loc Roofing Systems
