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Heavy Float Glass

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Glass with extra muscle

At Guardian, heavy float glass is defined as glass with a thickness greater than 6 mm (1/4"). When compared to the traditional 6 mm (1/4"), often used in architectural applications, our stouter heavy glass product offers some very distinct advantages.


  • Increased strength and less deflection. 
  • In certain wind load areas, where glass surface optics are critical, annealed heavy float glass may be specified instead of heat-strengthened or tempered glass.
  • Can be used as an exterior pane in an insulating glass unit combined with a thinner interior pane to reduce the exterior distortion which normally occurs in insulating glass.


  • Aquariums
  • Glass floors
  • Basketball backboards
  • Hockey arenas
  • Safety glazing
  • Commercial glazing for windows & doors
  • Tabletops
  • Glass shelves
  • Office partitions
  • Storefronts and entranceways
  • Handball, squash and racquetball courts


  • Clear and green 
  • Tempered in all thicknesses 
  • Heat-strengthened in glass thicknesses of 8 mm (5/16") and 10 mm (3/8") 
  • Custom fabrication, i.e. hole drilling, edge grinding and beveling, decorative grooving






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For more information about float glass products, contact one of these North American Guardian locations:

    Carleton, Michigan

  Corsicana, Texas
  DeWitt, Iowa
  Geneva, New York

  Kingsburg, California
  Richburg, South Carolina

From anywhere, contact the Guardian location near you.

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Guardian Global Headquarters
2300 Harmon Rd.
Auburn Hills, MI  48326
248.340.9988 (fax)

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