The Certificate of Leadership rating is a recognition of leadership in safety, technical training, and industry participation.
| Company | Contact | Rating |
|---|---|---|
| 3E Glass (Alberta) Ltd. | Brian Allan | ★★★ |
| Alberta Glass Company Inc. | Paul Heyens | ★★★★ |
| All Glass Parts | Ross Wady | ★ |
| All Reach Glass | ★★★★ | |
| Alpine Glass Inc. | Darcy Berlin | ★★★★ |
| Alumicor Ltd. | Alan Ryland | ★ |
| Aluminum & Glass Worx Ltd. | ★★★ | |
| Beacon Glass | Blake Simpson | ★★★★ |
| Cal-Tech Glass Services Ltd. | Bert Green | ★★★★ |
| CAN-Am Glass | Don Moore | ★ |
| Capilano Glass | ★★★★ | |
| Capital City Fabrication | ★ | |
| Cascade/Aquatech | Ben Servais | ★ |
| CR Laurence Company Inc. | Will Armstrong | |
| Creative Glass | ★★ | |
| Crystal Temp | Robert Pedersen | ★★ |
| Desa Glass | Gary Parsons | ★★★★ |
| Evolution Glass Inc. | Richard Munro | ★★★★ |
| Ferguson Corporation | Richard Neal | ★★★★ |
| First Choice Industrial Supply Ltd. | ★ | |
| Glass 8 | ★ | |
| Glass Guild Ltd. | Stuart Cantrill | ★ |
| Grant Metal Products Ltd. | Todd Hunchak | ★★ |
| Great Choice Glass Ltd. | Muhammad Khan | ★★★ |
| Griffin Glass (1981) Ltd. | Trevor Whyte | ★★★★ |
| Hayward Glass | ★★★ | |
| Insul-Lite Manufacturing | Troy Layton | |
| Kawneer | Paul Gulkiewich | ★ |
| Lenmak Exteriors | Ray Turner | ★ |
| Mario Glass Inc. | ★ | |
| Metro Glass Products Ltd. | Mei Whyte | ★★ |
| Nabco Canada | Tim Noorland | ★ |
| Oldcastle Building Envelope | Margaret Townsend | ★★★ |
| Rocky View Glass & Window Ltd. | Don Scott | ★★ |
| Ryerson | Ray Pasta | ★★ |
| Samuel Specialty Metals | Ferlin Boyer | ★★ |
| South Hill Windows | David Jejina | ★★ |
| Spalding | Diogo (G) Harvey | ★★ |
| Specialty Glazing | ★★★ | |
| Sportcon Glass & Door Service | ★★ | |
| Stanley Access | Darin King | ★★★ |
| Supertint | ★★ | |
| Vitro Architectural Glass | Gwen Phillips | |
| Vitrum Industries | Mike Trussel | ★★ |
| Wescom Glass & Aluminum Ltd. | Tyler Wing | ★★★ |