Overhead Glazing
Glass which slopes more than 15° from the vertical is considered sloped glazing by the major model building codes. Laminated glass is the preferred product for sloped and overhead glazing, because the glass is retained in the opening, even when broken, reducing the possibility of injury from falling glass.
Capabilities [-]
Overhead Glazing Capabilities
Oldcastle BuildingEnvelope® can calculate the most suitable glass for use in any given application. However, it is the responsibility of the design professional to calculate and provide the equivalent design load. This calculation must take into account the correct combination of snow load (if applicable), wind load and dead load. Without the equivalent design load, Oldcastle BuildingEnvelope® must rely on the conservative limits recommended by the American Architectural Manufacturers Association (AAMA) for four-side uniform support. See AAMA Guidelines below
| AAMA Guidelines for Overhead Glazing | ||||||
|---|---|---|---|---|---|---|
| Designation in inches | Glass Type | Outboard Lite in inches | Air Space in inches | Inboard Construction Glass-PVB-Glass in inches |
Maximum Size sq. ft. |
Weight lbs/ft2 |
| 1/4 | Annealed | – | – | 1/8 – 0.030 – 1/8 | 12 | 3.42 |
| 3/8 | Annealed | – | – | 3/16 – 0.030 – 3/16 | 18 | 5.05 |
| 1/2 | Annealed | – | – | 1/4 – 0.030 – 1/4 | 24 | 6.67 |
| 5/16 | Heat-strengthened | – | – | 1/8 – 0.060 – 1/8 | 25 | 3.58 |
| 7/16 | Heat-strengthened | – | – | 3/16 – 0.060 – 3/16 | 40 | 5.21 |
| 9/16(1) | Heat-strengthened | – | – | 1/4 – 0.060 – 1/4 | 40 | 6.83 |
| 13/16(1) | Heat-strengthened | – | – | 3/8 – 0.060 – 3/8 | 40 | 10.09 |
| 11/16(1) | Tempered | – | – | 1/2 – 0.060 – 1/2 | 40 | 13.33 |
| 7/8 | Annealed | 1/8 | 1/2 | 1/8 – 0.030 – 1/8 | 12 | 5.05 |
| 11/16 | Annealed | 3/16 | 1/2 | 3/16 – 0.030 – 3/16 | 18 | 6.67 |
| 11/4 | Annealed | 1/4 | 1/2 | 1/4 – 0.030 – 1/4 | 24 | 8.29 |
| 7/8 | Heat-strengthened | 1/8 | 1/2 | 1/8 – 0.060 – 1/8 | 25 | 5.21 |
| 11/8 | Heat-strengthened | 3/16 | 1/2 | 3/16 – 0.060 – 3/16 | 40 | 6.83 |
| 15/16 | Heat-strengthened | 1/4 | 1/2 | 1/4 – 0.060 – 1/4 | 40 | 8.45 |
These are conservative designs assuming the glass is horizontal with maximum snow load.
Detailed engineering design particularly on sloped glazing can often increase the maximum allowable size.
(1) These products are recommended for point-supported canopies. Point supported laminates must be fully tempered.
Description [-]
Overhead Glazing Description
Laminated glass for use in sloped and overhead glazing can be used monolithically or fabricated into insulating glass units. Insulating glass units typically consist of an outboard lite of heat-strengthened glass that resists accidental damage caused by falling objects, and an inboard laminated glass that captures any fragments. Tempered glass is not normally recommended for the outboard lite as small broken particles can easily slide down the outside of the roof and onto the ground in the event of accidental damage.
Glass Colors [-]
Laminated Glass Colors
Oldcastle BuildingEnvelope® offers a comprehensive line of laminated glazing solutions including security glazing. The glass types listed below are included in the Laminated Glass 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.
Laminated architectural glass can be fabricated using various glass types, including low-e, clear, low-iron, tinted, reflective, patterned or wired glass to achieve desired aesthetics or to improve solar control and thermal performance. Mass pigmented and decorative interlayers can also be used to provide a wide range of effects.
For monolithic, laminated or insulating glass unit performance data, please go to SystemSelect™, our on-line glass performance calculator.
The tables below include a selection of the most common colors available. For full details of the decorative interlayers including Vanceva® Color, Pattern, Metallic and Image see the decorative section
Assistance Options:
- Call toll-free, 866-653-2278.
- Send e-mail to Technical Support.
| Clear Glass Products |
| Laminated 1/8″ Clear – 0.030″ Clear PVB – 1/8″ Clear |
| Laminated 1/8″ Clear – 0.060″ Clear PVB – 1/8″ Clear |
| Laminated 1/8″ Clear – 0.090″ Clear PVB – 1/8″ Clear |
| Laminated 1/8″ Clear – 0.035″ SentryGlas® – 1/8″ Clear |
| Laminated 1/8″ Clear – 0.060″ SentryGlas® – 1/8″ Clear |
| Laminated 1/8″ Clear – 0.090″ SentryGlas® – 1/8″ Clear |
| Laminated 1/8″ Clear – 0.100″ Saflex® HP Clear PVB – 1/8″ Clear |
| Laminated 1/8″ Clear – 0.075″ StormGlass™ – 1/8″ Clear |
| Laminated 3/16″ Clear – 0.030″ Clear PVB – 3/16″ Clear |
| Laminated 3/16″ Clear – 0.060″ Clear PVB – 3/16″ Clear |
| Laminated 3/16″ Clear – 0.090″ Clear PVB – 3/16″ Clear |
| Laminated 3/16″ Clear – 0.035″ SentryGlas® – 3/16″ Clear |
| Laminated 3/16″ Clear – 0.060″ SentryGlas® – 3/16″ Clear |
| Laminated 3/16″ Clear – 0.090″ SentryGlas® – 3/16″ Clear |
| Laminated 3/16″ Clear – 0.100″ Saflex® HP Clear PVB – 3/16″ Clear |
| Laminated 3/16″ Clear – 0.075″ StormGlass™ – 3/16″ Clear |
| Laminated 1/4″ Clear – 0.030″ Clear PVB – 1/4″ Clear |
| Laminated 1/4″ Clear – 0.060″ Clear PVB – 1/4″ Clear |
| Laminated 1/4″ Clear – 0.090″ Clear PVB – 1/4″ Clear |
| Laminated 1/4″ Clear – 0.035″ SentryGlas® – 1/4″ Clear |
| Laminated 1/4″ Clear – 0.060″ SentryGlas® – 1/4″ Clear |
| Laminated 1/4″ Clear – 0.090″ SentryGlas® – 1/4″ Clear |
| Laminated 1/4″ Clear – 0.100″ Saflex® HP Clear PVB – 1/4″ Clear |
| Laminated 1/4″ Clear – 0.075″ StormGlass™ – 1/4″ Clear |
| White Glass Products |
| Laminated 1/8″ Clear – 0.015″ Vanceva® Polar White (220700) PVB + 0.015″ Saflex® Clear PVB – 1/8″ Clear |
| Laminated 1/8″ Clear – 0.030″ Vanceva® Arctic Snow (216500) White PVB – 1/8″ Clear |
| Laminated 1/8″ Clear – 0.030″ Vanceva® Cool White (218000) PVB – 1/8″ Clear |
| Laminated 1/8″ Clear – 0.030″ Trosifol® Translucent White (2165) White PVB – 1/8″ Clear |
| Laminated 1/8″ Clear – 0.030″ Trosifol® Soft White (2180) White PVB – 1/8″ Clear |
| Grey Glass Products |
| Tint |
| Laminated 1/8″ Clear – 0.030″ Saflex® Medium Gray (654400) PVB – 1/8″ Clear |
| Laminated 1/8″ Clear – 0.015″ Vanceva® Evening Shadow (835000) PVB + 0.015″ Saflex® Clear PVB – 1/8″ Clear |
| Laminated 1/8″ Clear – 0.015″ Vanceva® Smoke Gray (837800) PVB + 0.015″ Saflex® Clear PVB – 1/8″ Clear |
| Laminated 1/8″ Clear – 0.030″ Trosifol® Gray (6544) PVB – 1/8″ Clear |
| Laminated 1/8″ Gray – 0.060″ Clear PVB – 1/8″ Clear |
| Laminated 1/8″ Gray – 0.060″ Clear PVB – 1/8″ Gray |
| Laminated 3/16″ Gray – 0.060″ Clear PVB – 3/16″ Clear |
| Laminated 3/16″ Gray – 0.060″ Clear PVB – 3/16″ Gray |
| Laminated 1/4″ Gray – 0.060″ Clear PVB – 1/4″ Clear |
| Laminated 1/4″ Guardian MidnightGray™ High Performance Tint – 0.060″ Clear PVB – 1/4″ Clear |
| Laminated 1/4″ Pilkington SuperGrey™ High Performance Tint – 0.060″ Clear PVB – 1/4″ Clear |
| Laminated 1/4″ Vitro Graylite® II High Performance Tint – 0.060″ Clear PVB – 1/4″ Clear |
| Reflective |
| Laminated 1/4″ Vitro Solarcool® Gray Reflective #2 – 0.060″ Clear PVB – 1/4″ Clear |
| Bronze Glass Products |
| Tint |
| Laminated 1/8″ Clear – 0.030″ Saflex® Light Bronze (645200) PVB – 1/8″ Clear |
| Laminated 1/8″ Clear – 0.030″ Trosifol® Bronze (6452) PVB – 1/8″ Clear |
| Laminated 1/8″ Bronze – 0.060″ Clear PVB – 1/8″ Clear |
| Laminated 1/8″ Bronze – 0.060″ Clear PVB – 1/8″ Bronze |
| Laminated 3/16″ Bronze – 0.060″ Clear PVB – 3/16″ Clear |
| Laminated 3/16″ Bronze – 0.060″ Clear PVB – 3/16″ Bronze |
| Laminated 1/4″ Bronze – 0.060″ Clear PVB – 1/4″ Clear |
| Reflective |
| Laminated 1/4″ Vitro Solarcool® Bronze Reflective #2 – 0.060″ Clear PVB – 1/4″ Clear |
| Green Glass Products |
| Tint |
| Laminated 1/8″ Green – 0.060″ Clear PVB – 1/8″ Clear |
| Laminated 1/8″ Green – 0.060″ Clear PVB – 1/8″ Green |
| Laminated 3/16″ Green – 0.060″ Clear PVB – 3/16″ Clear |
| Laminated 3/16″ Green – 0.060″ Clear PVB – 3/16″ Green |
| Laminated 1/4″ Green – 0.060″ Clear PVB – 1/4″ Clear |
| Laminated 1/4″ Pilkington EverGreen™ High Performance Tint – 0.060″ Clear PVB – 1/4″ Clear |
| Laminated 1/4″ Vitro Atlantica® High Performance Tint – 0.060″ Clear PVB – 1/4″ Clear |
| Blue-Green Glass Products |
| Tint |
| Laminated 1/8″ Clear – 0.030″ Saflex® Medium Blue-Green (377300) PVB – 1/8″ Clear |
| Laminated 1/8″ Clear – 0.030″ Trosifol® Light Blue-Green (3773) PVB – 1/8″ Clear |
| Laminated 1/4″ Pilkington Optifloat™ Blue-Green Tint – 0.060″ Clear PVB – 1/4″ Clear |
| Laminated 1/4″ Vitro Azuria® High Performance Tint – 0.060″ Clear PVB – 1/4″ Clear |
| Reflective |
| Laminated 1/4″ Vitro Solarcool® Azuria® (2) – 0.060″ Clear PVB – 1/4″ Clear |
| Blue Glass Products |
| Tint |
| Laminated 1/8″ Clear – 0.015″ Vanceva® Aquamarine (827800) PVB + 0.015″ Saflex® Clear PVB – 1/8″ Clear |
| Laminated 1/8″ Clear – 0.015″ Vanceva® Sapphire (825000) PVB + 0.015″ Saflex® Clear PVB – 1/8″ Clear |
| Laminated 1/8″ Clear – 0.015″ Vanceva® True Blue (841400) PVB + 0.015″ Saflex® Clear PVB – 1/8″ Clear |
| Laminated 1/4″ Pilkington Arctic Blue™ – 0.060″ Clear PVB – 1/4″ Clear |
| Laminated 1/4″ Vitro Solarblue® – 0.060″ Clear PVB – 1/4″ Clear |
| Laminated 1/4″ Vitro Pacifica® High Performance Tint – 0.060″ Clear PVB – 1/4″ Clear |
| Reflective |
| Laminated 1/4″ Vitro Solarcool® Pacifica® Reflective #2 – 0.060″ Clear PVB – 1/4″ Clear |
| Laminated 1/4″ Vitro Solarcool® Solarblue® Reflective #2 – 0.060″ Clear PVB – 1/4″ Clear |
| Laminated 1/4″ Vitro Vistacool® Pacifica® Reflective #2 – 0.060″ Clear PVB – 1/4″ Clear |
Point-Supported Canopies [-]
Point-supported canopies are commonly used as features at entrances to offices, stores and residential properties. They are defined as overhead glazing where the glass is supported by fasteners that pass through holes in the glass and that cannot be offered in annealed glass due to high stresses. The support structure can be either above or below the glass. This type of design is specifically excluded from ASTM E1300 Standard Practice for Determining the Load Resistance of Glass in Buildings and needs careful, specific engineering design.
Product Details
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