Our Story

We Don’t Just Install Glass. We Build Relationships.

Glassco was founded in 2014 by Calvin Lewis and two partners. Glassco’s team has over 100 combined years of experience and consistently works on large and small projects for a wide variety of contractors throughout the state of Oklahoma and surrounding areas. Glassco takes pride in ensuring we provide the highest-quality glass installation and most reliable service our customers can receive and have built our reputation on delivering on that pledge.

Core Principles


To us, every project is a “big project.” We treat every customer with equal respect, and deliver the same level of quality and service for every project.


The smallest detail is as important as the biggest assignment. The job is only as good as the caulking at the end, so from start to finish we deliver the quality and reliability you deserve.


The most important work we do isn’t just installing glass — it’s building long-lasting relationships based on mutual respect, shared trust, and proven results.

meet the team

Calvin Lewis


Calvin has over 45 years of experience in the glass and glazing industry. Prior to his time at Glassco, Calvin worked with Harding Glass, APAX, Dyer Glass, and Horner Glass. Calvin has the full range of experience: starting as a glazier all the way to owner, and has handled all aspects of the job, including installation, foreman, estimating, and project management. Calvin currently leads all estimating duties for Glassco and has played an integral role in its growth and expansion.

Brandon Marion

Project Manager

Brandon has over 24 years of industry experience and joined Glassco in June 2023 from Advantage Glass. While at Advantage, Brandon had many roles, starting as a glazing technician, and working up to a project manager running his own multi-million dollar projects. Brandon takes pride in the industry and gives back via his involvement with ABC Oklahoma.

Recent Projects


Nelson Mazda


Paul Trucking


Trader Joe's

Contact Us

We install glass, but build our business on new and long-standing relationships. Get to know us in person and experience our high-quality work for yourself.


421 N 2nd Street
Sapulpa, OK 74066