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Top 50 Glaziers

Glass Magazine’s Top 50 Glaziers list, the longest-running glass industry ranking, is compiled annually. This resource captures the health of the glazing market by surveying top glazing companies about sales, bid levels, profit margins and major challenges.

See the most recent list of top contract glaziers below, and visit to get more information, including notable projects, market statistics and industry trends.

2020 Top 50 Glaziers

Ranked by sales (in millions)


Companies denoted below with * are an estimated annual sales volume, not confirmed by the company.

1 Permasteelisa North America Windsor, CT

2 Enclos Corp. Eagan, MN

3 Harmon Inc. Bloomington, MN 

4 Benson Industries Portland, OR

5 W&W Glass Nanuet, NY  

6 Walters & Wolf* Fremont, CA 

7 Crown Corr Inc. Gary, IN 

8 Massey’s Plate Glass & Aluminum Inc. Branford, CT 

9 Architectural Glass & Aluminum Livermore, CA 

10 Flynn Group of Companies Toronto, Canada 

11 Binswanger Glass Memphis, TN 

12 Yuanda USA Corp. Chicago 

13 Karas & Karas Glass Co.* Boston, MA 

14 Pioneer Cladding & Glazing Systems Inc. Mason, OH

15 Dynamic Glass LLC Houston, TX 

16 TSI Corp. Upper Marlboro, MD

17 seele Inc. New York City 

18/19 RynoClad Technologies Inc. Ontario, CA

18/19 Ventana Design-Build Systems Chicago

20 Architectural Wall Systems LLC Des Moines, IA

21 Giroux Glass Inc. Los Angeles

22 Above All Store Fronts Hauppauge, NY

23 Cherry Hill Glass Co. Branford, CT

24 Admiral Glass Co. Houston

25 Ajay Glass Co. Canandaigua, NY

26 Tepcoglass LLC Dallas

27/28 SPS Corp. Apex, NC

27/28 Haley-Greer Inc. Dallas

29/30 Vision Enclosure Walls Inc. Dallas

29/30 Ranger Specialized Glass Inc. Houston

31 Alexander Metals Inc. Nashville, TN 


32 Kensington Glass Ijamsville, MD

33 Crawford-Tracey Corp. Deerfield Beach, FL

34 Momentum Glass Spring, TX

35 ACE Glass Little Rock, AR

36 National Enclosure Co. Ypsilanti, MI 

37 Metropolitan Glass Inc. Denver 

38 Denison Glass & Mirror Inc. Denison, TX 

39 Synergi LLC Elkridge, MD 

40 Koch Corp. (Strong Tower Building Envelopes) Louisville, KY

41 Horizon Glass & Glazing Co. Denver 

42 Specified Systems Inc. Canonsburg, PA

43 Egan Company/InterClad Brooklyn Park, MN

44 AFI Glass & Architectural Metal Inc. Poughkeepsie, NY

45 Austin Glass & Mirror Inc. Austin, Texas

46 R&R Window Contractors Inc. Easthampton, MA

47 H.J. Martin and Son Inc. Green Bay, WI

48 Key Glass Inc. Bradenton, FL

49 U.S. Glass Inc. Sacramento, CA

50 Wind Ready Miami Gardens, FL

Track year-over-year changes and trends in the contract glazing industry. See previous years’ reports in Glass M.

2020 Top 50 Glaziers | Building a New Normal

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