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Heat Strengthened

Introduction

Oldcastle BuildingEnvelope® heat-strengthened glass is approximately twice as strong as annealed glass of similar thickness and configuration. Heat-strengthened glass generally fractures in a manner similar to annealed glass and tends to remain in the opening when broken. It is intended for general glazing where additional strength and/or resistance to mechanical and/or thermal stress are desired. Heat-strengthened glass is NOT a safety glazing product and therefore should not be used where safety glazing is required.

    Applications

    Heat Strengthened Applications

    • Due to its superior glass retention properties, heat-strengthened glass is the preferred heat-treated glass product for applications where additional strength is needed to meet mechanical loads (wind or snow) or thermal loads caused by certain tinted or coated glasses. Heat-Strengthened glass is widely used in laminated glass for additional strength, such as in overhead and sloped glazing. Heat-Strengthened glass cannot be used in any safety glazing applications.

    Capabilities

    Heat Strengthened Capabilities

    • Most architectural glass products can be heat-treated. Some patterned glass and decorative glass with a deep surface pattern may not be heat-treatable. Silk-Screened and ceramic spandrel glass are always either heat-strengthened or tempered as part of their fabrication process. When spandrel glass is incorporated into insulating glass units, both lites must be heat-treated. Heat-absorbing glasses, such as standard and high performance tints, reflective glasses and some Low-E glass, may require heat treatment to reduce the probability of thermal-stress breakage, especially when used as part of an insulating glass unit.

    Characteristics

    Heat Strengthened Characteristics

    • The color, chemical composition and light transmission characteristics of glass remain unchanged after the heat-treating process. The physical properties of glass, such as the compressive strength, hardness, specific gravity, the softening point, thermal conductivity, solar transmittance, stiffness and expansion coefficient, also remain unchanged.

    Description

    Heat Strengthened Description

    • Glass is heat-treated by heating annealed glass to a temperature of approximately 1,150ºF (621°C), then rapidly cooling it. The glass is cooled by a carefully controlled airflow (also known as quenching), which uniformly cools all glass surfaces simultaneously. High airflow rates produce tempered glass and much lower airflow rates produce heat-strengthened glass.

    Glass Colors

    Heat-Treated Glass Colors

    • Oldcastle BuildingEnvelope® offers a comprehensive line of Heat-Treated Glass options. The glass types listed below are included in the Heat-Treated offering. Oldcastle BuildingEnvelope® offers a variety of glass products to meet your architectural glazing design needs. Please contact Oldcastle BuildingEnvelope® for product availability and performance data as this information is subject to change without notice.

      For monolithic, laminated or insulating glass unit performance data, please go to GlasSelect®, our on-line glass performance calculator.

      Assistance Options:

      1. Call toll-free, 866-653-2278.
      2. Send e-mail to support@obe.com.
    • Clear
      Clear Glass Products
      Clear
      1/4" (6mm) Clear Float Glass
      5/16" (8mm) Clear Float Glass
      3/8" (10mm) Clear Float Glass
      1/2" (12mm) Clear Float Glass
      3/4" (19mm) Clear Float Glass
      Self-Cleaning/Low Maintenance
      1/4" (6mm) PPG SunClean™ on Clear Self-Cleaning #1
      1/4" (6mm) Pilkington Activ® on Clear Self-Cleaning #1
      Low-E
      1/4" (6mm) PPG Solarban® 60 on Clear Low-E #2 or #3
      1/4" (6mm) PPG Solarban® 67 on Clear Low-E #2 or #3
      1/4" (6mm) PPG Solarban® 70XL Low-E #2 or #3
      1/4" (6mm) PPG Sungate® 500 on Clear Low-E #2 or #3
      1/4" (6mm) PPG Sungate® 600 on Clear Low-E #2 or #3
      1/4" (6mm) Guardian SunGuard® Light Blue 63 on Clear Low-E #2 or #3
      1/4" (6mm) Guardian SunGuard® Neutral 40 on Clear Low-E #2
      1/4" (6mm) Guardian SunGuard® Neutral 50 on Clear Low-E #2
      1/4" (6mm) Guardian SunGuard® SN 54 on Clear Low-E #2
      1/4" (6mm) Guardian SunGuard® SN 62 on Clear Low-E #2 or #3
      1/4" (6mm) Guardian SunGuard® SN 68 on Clear Low-E #2 or #3
      1/4" (6mm) Guardian SunGuard® SNX 62/27 on Clear Low-E #2 or #3
      1/4" (6mm) Pilkington Energy Advantage™ Low-E #2 or #3
      Reflective
      1/4" (6mm) PPG Solarban® R100 on Clear Neutral Reflective Low-E #2
      1/4" (6mm) Guardian SunGuard® AG 43 on Clear Radiant Low-E #2
      1/4" (6mm) Guardian SunGuard® AG 50 on Clear Radiant Low-E #2
      1/4" (6mm) Guardian SunGuard® Neutral 61 on Clear Radiant Low-E #2
      1/4" (6mm) Guardian SunGuard® Silver 20 on Clear Reflective #2
      1/4" (6mm) Guardian SunGuard® Silver 32 on Clear Reflective #2
      1/4" (6mm) Guardian SunGuard® SNR 43 on Clear Radiant Low-E #2

      1/4" (6mm) Pilkington Clear Eclipse Advantage™ Radiant Low-E #2

       

      Low Iron
      Low Iron Glass Products
      Low Iron
      1/4" (6mm) PPG Starphire® Low Iron Clear Float Glass
      3/8" (10mm) PPG Starphire® Low Iron Clear Float Glass
      1/2" (12mm) PPG Starphire® Low Iron Clear Float Glass
      1/4" (6mm) Guardian UltraWhite™ Low Iron Clear Float Glass
      3/8" (10mm) Guardian UltraWhite™ Low Iron Clear Float Glass
      1/2" (12mm) Guardian UltraWhite™ Low Iron Clear Float Glass
      1/4" (6mm) Pilkington Optiwhite™ Low Iron Clear Float Glass
      3/8" (10mm) Pilkington Optiwhite™ Low Iron Clear Float Glass
      1/2" (12mm) Pilkington Optiwhite™ Low Iron Clear Float Glass
      Low-E
      1/4" (6mm) PPG Solarban® 60 on Starphire Low-E #2 or #3
      1/4" (6mm) PPG Solarban® 72 on Starphire Low-E #2 or #3
      1/4" (6mm) Guardian SunGuard® SN 54 on UltraWhite™ Low-E #2
      1/4" (6mm) Guardian SunGuard® SN 62 on UltraWhite™ Low-E #2 or #3
      1/4" (6mm) Guardian SunGuard® SN 68 on UltraWhite™ Low-E #2 or #3
      1/4" (6mm) Guardian SunGuard® SNX 62/27 on UltraWhite™ Low-E #2 or #3
      Reflective
      1/4" (6mm) PPG Solarban® R100 on Starphire® Neutral Reflective Low-E #2
      1/4" (6mm) Guardian SunGuard® SNR 43 on UltraWhite™ Radiant Low-E #2

       

      Gray
      Gray Glass Products
      Tinted
      1/4" (6mm) PPG Graylite® II High Performance Tint
      1/4" (6mm) PPG Solargray® Tint Float Glass
      1/4" (6mm) Guardian CrystalGray® Tinted Float Glass
      1/4" (6mm) Guardian Gray Tinted Float Glass
      1/4" (6mm) Guardian MidnightGray™ High Performance Tint
      1/4" (6mm) Pilkington SuperGrey™ High Performance Tint
      Low-E
      1/4" (6mm) PPG Solarban® 60 on Solargray® Low-E #2
      1/4" (6mm) PPG Solarban® 67 on Solargray® Low-E #2
      1/4" (6mm) PPG Solarban® 70XL on Solargray® Low-E #2
      1/4" (6mm) PPG Solarban® z50 Low-E #2 or #3
      1/4" (6mm) Guardian SunGuard® Neutral 40 on Clear Low-E #2
      1/4" (6mm) Guardian SunGuard® Neutral 50 on Clear Low-E #2
      1/4" (6mm) Guardian SunGuard® SN 54 on CrystalGray® Low-E #2
      1/4" (6mm) Guardian SunGuard® SN 62 on CrystalGray® Low-E #2
      1/4" (6mm) Guardian SunGuard® SN 68 on CrystalGray® Low-E #2
      1/4" (6mm) Guardian SunGuard® SN 68 on Gray Low-E #2
      1/4" (6mm) Guardian SunGuard® SNX 62/27 on CrystalGray® Low-E #2
      1/4" (6mm) Pilkington Solar E™ on Clear Low-E #2
      1/4" (6mm) Pilkington Solar E™ on Grey Low-E #2
      Reflective
      1/4" (6mm) PPG Solarban® R100 on Solargray® Neutral Reflective Low-E #2
      1/4" (6mm) PPG Solarcool® Gray Reflective #2
      1/4" (6mm) PPG Solarcool® Graylite® Reflective #2
      1/4" (6mm) PPG Vistacool™ Solargray® Reflective #2
      1/4" (6mm) Guardian SunGuard® AG 43 on CrystalGray® Radiant Low-E #2
      1/4" (6mm) Guardian SunGuard® AG 50 on CrystalGray® Radiant Low-E #2
      1/4" (6mm) Guardian SunGuard® Royal Blue 40 on CrystalGray® Radiant Low-E #2
      1/4" (6mm) Guardian SunGuard® SNR 43 on CrystalGray® Radiant Low-E #2
      1/4" (6mm) Pilkington Grey Eclipse Advantage™ Radiant Low-E #2

       

      Bronze
      Bronze Glass Products
      Tinted
      1/4" (6mm) PPG Solarbronze®
      Low-E
      1/4" (6mm) PPG Solarban® 60 on Solarbronze® Low-E #2
      1/4" (6mm) PPG Solarban® 67 on Solarbronze® Low-E #2
      1/4" (6mm) PPG Solarban® 70XL on Solarbronze® Low-E #2
      Reflective
      1/4" (6mm) PPG Solarban® R100 on Solarbronze® Neutral Reflective Low-E #2
      1/4" (6mm) PPG Solarcool® Bronze Reflective #2
      1/4" (6mm) Pilkington Bronze Eclipse Advantage™ Radiant Low-E #2

       

      Green
      Green Glass Products
      Tinted
      1/4" (6mm) PPG Atlantica™ High Performance Tint
      1/4" (6mm) PPG Solexia™ Tinted Float Glass
      1/4" (6mm) Guardian TwilightGreen™ High Performance Tint
      1/4" (6mm) Pilkington EverGreen™ High Performance Tint
      Low-E
      1/4" (6mm) PPG Solarban® 60 on Atlantica™ Low-E #2
      1/4" (6mm) PPG Solarban® 67 on Atlantica™ Low-E #2
      1/4" (6mm) PPG Solarban® 70XL on Atlantica™ Low-E #2
      1/4" (6mm) Guardian SunGuard® Light Blue 63 on Green Low-E #2
      1/4" (6mm) Guardian SunGuard® Neutral 40 on Green Low-E #2
      1/4" (6mm) Guardian SunGuard® Neutral 40 on TwilightGreen™ Low-E #2
      1/4" (6mm) Guardian SunGuard® Neutral 50 on Green Low-E #2
      1/4" (6mm) Guardian SunGuard® Neutral 50 on TwilightGreen™ Low-E #2
      1/4" (6mm) Guardian SunGuard® SN 54 on Green Low-E #2
      1/4" (6mm) Guardian SunGuard® SN 54 on TwilightGreen™ Low-E #2
      1/4" (6mm) Guardian SunGuard® SN 62 on Green Low-E #2
      1/4" (6mm) Guardian SunGuard® SN 62 on TwilightGreen™ Low-E #2
      1/4" (6mm) Guardian SunGuard® SN 68 on Green Low-E #2
      1/4" (6mm) Guardian SunGuard® SN 68 on TwilightGreen™ Low-E #2
      1/4" (6mm) Guardian SunGuard® SNX 62/27 on Green Low-E #2
      1/4" (6mm) Guardian SunGuard® SNX 62/27 on TwilightGreen™ Low-E #2
      Reflective
      1/4" (6mm) PPG Solarban® R100 on Atlantica™ Neutral Reflective Low-E #2
      1/4" (6mm) PPG Solarban® R100 on Solexia™ Neutral Reflective Low-E #2
      1/4" (6mm) PPG Solarcool® Solexia™ Reflective #2
      1/4" (6mm) PPG Vistacool™ Atlantica™ Reflective #2
      1/4" (6mm) Guardian SunGuard® AG 43 on Green Radiant Low-E #2
      1/4" (6mm) Guardian SunGuard® AG 43 on TwilightGreen™ Radiant Low-E #2
      1/4" (6mm) Guardian SunGuard® AG 50 on Green Radiant Low-E #2
      1/4" (6mm) Guardian SunGuard® AG 50 on TwilightGreen™ Radiant Low-E #2
      1/4" (6mm) Guardian SunGuard® Neutral 61 on Green Radiant Low-E #2
      1/4" (6mm) Guardian SunGuard® Royal Blue 40 on Green Radiant Low-E #2
      1/4" (6mm) Guardian SunGuard® Silver 20 on Green Reflective #2
      1/4" (6mm) Guardian SunGuard® Silver 32 on Green Reflective #2
      1/4" (6mm) Guardian SunGuard® SNR 43 on Green Radiant Low-E #2
      1/4" (6mm) Guardian SunGuard® SNR 43 on TwilightGreen™ Radiant Low-E #2
      1/4" (6mm) Pilkington EverGreen™ Eclipse Advantage™ Radiant Low-E #2

       

      Blue Green
      Blue Green Glass Products
      Tinted
      1/4" (6mm) PPG Azuria™ High Performance Tint
      1/4" (6mm) Pilkington Optifloat™ Blue-Green Tinted Float Glass
      Low-E
      1/4" (6mm) PPG Solarban® 60 on Azuria™ Low-E #2
      1/4" (6mm) PPG Solarban® 67 on Azuria™ Low-E #2
      1/4" (6mm) PPG Solarban® 70XL on Azuria™ Low-E #2
      Reflective
      1/4" (6mm) PPG Solarban® R100 on Azuria™ Neutral Reflective Low-E #2
      1/4" (6mm) PPG Solarcool® Azuria™ Reflective #2
      1/4" (6mm) PPG Vistacool™ Azuria™ Reflective #2
      1/4" (6mm) Pilkington Blue-Green Eclipse Advantage™ Radiant Low-E #2

       

      Blue
      Blue Glass Products
      Tinted
      1/4" (6mm) PPG Optiblue®
      1/4" (6mm) PPG Pacifica™ High Performance Tint
      1/4" (6mm) PPG Solarblue™
      1/4" (6mm) Pilkington Arctic Blue™ High Performance Tint
      Low-E
      1/4" (6mm) PPG Solarban® 60 on Pacifica™ Low-E #2
      1/4" (6mm) PPG Solarban® 67 on Pacifica™ Low-E #2
      1/4" (6mm) PPG Solarban® 70XL on Pacifica™ Low-E #2
      1/4" (6mm) PPG Solarban® 60 on Solarblue™ Low-E #2
      1/4" (6mm) PPG Solarban® 67 on Solarblue™ Low-E #2
      1/4" (6mm) PPG Solarban® 70XL on Solarblue™ Low-E #2
      1/4" (6mm) PPG Solarban® z50 Low-E #2 or #3
      1/4" (6mm) Guardian SunGuard® Neutral 40 on Clear Low-E #2
      1/4" (6mm) Guardian SunGuard® Neutral 50 on Clear Low-E #2
      1/4" (6mm) Pilkington Solar E™ on Arctic Blue™ Low-E #2
      Reflective
      1/4" (6mm) PPG Solarban® R100 on Azuria™ Neutral Reflective Low-E #2
      1/4" (6mm) PPG Solarban® R100 on Optiblue® Neutral Reflective Low-E #2
      1/4" (6mm) PPG Solarban® R100 on Pacifica™ Neutral Reflective Low-E #2
      1/4" (6mm) PPG Solarban® R100 on Solarblue™ Neutral Reflective Low-E #2
      1/4" (6mm) PPG Solarcool® Pacifica™ Reflective #2
      1/4" (6mm) PPG Solarcool® Solarblue™ Reflective #2
      1/4" (6mm) PPG Vistacool™ Pacifica™ Reflective #2
      1/4" (6mm) Guardian SunGuard® Royal Blue 40 on Clear Radiant Low-E #2
      1/4" (6mm) Pilkington Arctic Blue™ Eclipse Advantage™ Radiant Low-E #2

       

      Silver
      Silver Glass Products
      Reflective
      1/4" (6mm) PPG Solarban® R100 on Clear Neutral Reflective Low-E #2
      1/4" (6mm) PPG Solarcool® Azuria™ Reflective #1
      1/4" (6mm) PPG Solarcool® Bronze Reflective #1
      1/4" (6mm) PPG Solarcool® Gray Reflective #1
      1/4" (6mm) PPG Solarcool® Graylite® Reflective #1
      1/4" (6mm) PPG Solarcool® Pacifica™ Reflective #1
      1/4" (6mm) PPG Solarcool® Solarblue™ Reflective #1
      1/4" (6mm) PPG Solarcool® Solexia™ Reflective #1
      1/4" (6mm) Guardian SunGuard® AG 43 on Clear Radiant Low-E #2
      1/4" (6mm) Guardian SunGuard® AG 50 on Clear Radiant Low-E #2
      1/4" (6mm) Guardian SunGuard® Neutral 61 on Clear Radiant Low-E #2
      1/4" (6mm) Guardian SunGuard® Silver 20 on Clear Reflective #2
      1/4" (6mm) Guardian SunGuard® Silver 32 on Clear Reflective #2
      1/4" (6mm) Guardian SunGuard® SNR 43 on Clear Radiant Low-E #2
      1/4" (6mm) Pilkington Clear Eclipse Advantage™ Radiant Low-E #2

       

    Literature

    • Heat Strengthened Sell Sheet(PDF)
    • Heat Strengthened Technical Data(PDF)