$50 million to $100 million

June 3, 2011
JW Marriott, Indianapolis, Ind. 

8. ASI Ltd.

Previous year rank: 17
Sales: Up 30 percent between 2009 and 2010
Headquarters: Whitestown, Ind.
Website: www.asilimited.com
Employees: 250

ASI Ltd. is a nationally recognized specialty contractor that provides advanced façade solutions for public and non-public sector projects. In business since 1989, the company internally controls design and manufacturing of all façade elements except for insulating glass, and specializes in developing job-specific unitized systems. Last year the company completed the JW Marriott Indianapolis, and designed, engineered, manufactured and installed this complex 300,000-square-foot façade consisting of more than 7,200 units of unitized curtain wall clad with alternating stainless steel fins. The JW Marriott is the 7th tallest building in Indianapolis.

9. Continental Glass Systems**

Previous year rank: 13
Headquarters: Hialeah, Fla.
Website: http://cgsfl.com
Employees: 70
**Estimates from Dun & Bradstreet and Hoover's. See "The Silent Players" sidebar.

Continental Glass Systems provides a full range of services in building envelope design and construction—curtain wall, windows, railings, skylights, metal panels and entrances—including pre-construction consulting, engineering services, project management and installation throughout the United States, according to the contract glazier's website.

10. Admiral Glass & Mirror

M.D. Anderson Cancer Center Administrative Support Building, Houston

Previous year rank: 14
Sales: Down 8 percent between 2009 and 2010
Headquarters: Houston
Website: www.admiralglass.net
Employees: 325

Headquartered in Houston, with a satellite office in League City, Texas, Admiral Glass & Mirror's service offerings include custom and standard curtain walls, storefronts, commercial windows, entry doors, skylights, aluminum composite and plate panels, and architectural terracotta tile. The company also offers complete in-house fabrication of all systems and panels. Among the most notable projects Admiral Glass & Mirror completed in 2010 is the 25-story M.D. Anderson Cancer Center Administrative Support Building in Houston. 

  • **The silent players

    The majority of the information included in the Top 50 comes directly from contract glazing firms; this year, 43 of the Top 50 confirmed their 2009 and 2010 sales figures. However, some companies request that we not include them or refuse to provide any information. We understand the sensitivity of releasing sales figures; however, we do not omit any firms simply because they ask. In cases where a company declines to participate, we use independent sources Dun & Bradstreet and Hoovers, prior-year submissions, and estimations from industry members to determine their ranking. Companies marked with ** are those that declined to provide information for the Top 50 Glaziers survey, but that Glass Magazine editors believe should be included. Their estimated rank is based on the independent sources described above.