INSULATING GLASS

INSULATING GLASS

What is Insulating Glass

The Insulated glass is a prefabricated unit made of two or more glass panes, which have been separated by an air gap and edge-sealed together. This edge seal not only binds the individual sheets of glass together to maintain the mechanical strength of the joint but also protects the space between the glass from outside influences. The air enclosed between the two glass panes is dried with a desiccant. Because of the low heat conductivity of the enclosed dry air between the glass panes, heat transmission through the window is drastically reduced. Tempered, Laminated, reflective, low-E, tinted or clear glass can be used.

Features & Benefits

dgu concept r9ewifwu3rh82xsvb65ia7574wkay9ihxc652oekl4

Thermal Insulation

Saves on heating and cooling by reducing air to air heat transfer.

due condensation r9evx6s7kmdtkco9ezf6wk7zl9biwn4zo54wffx1a0

Prevention of Dew Condensation

There is no dew formation on the glass surface permitting a clear view even in the most humid conditions.

retards sound transmission r9ewfo9xzbotw9tlgz31xwac627eaciy7n0o7ciawo

Retards Sound Transmission

Using one of the panes as laminated glass will drastically reduce sound transmission.

pleasent room temperature r9ew6tmnmhkmkgog5nciymp2sftysydxztv2ijmri0

Pleasant Room Temperature

It offers increased personal comfort even when seated next to the glazing as the temperature of the inner pane is close to room temperature maintained.

multuiple glass combinations r9ew2svie02gwiipmwrzan83b3nfvkfa3xealxle48

Multiple Glass Combinations

There are one or more panes of glass should be laminated or toughened with in the insulated glass.

man puncing on glass r9bfqkqadmga72hknjc0tpdzh0ef5h470nxjjwjf7c

Strength

DGU glass will marginally increase the overall strength against wind load pressure.

Size & Specification Options

  • Maximum size 2500 mm X 3660 mm. (Please check with us for larger sizes)
  • Filled with dry air (conventional) or Argon (for better thermal) or SF6 (better acoustical).
  • Combinations vary and may use clear, tinted, ceramic decorated or high performance glass in annealed, heat strengthened or laminated form.
  • Low-E is available on the #2 or #3 surface of an insulating glass unit.
  • Step glass is available.
  • Shaped DGU’s also available.
  • Bent DGU is also available on special request. Check for limitations.
chatgpt image jul 30 2025 04 00 26 pm 11zon

The GSC Advantage

  • First in Architectural Insulated  Glass in India with over 30 years of experience in glass processing. Processing in Greater Noida.
  • Best quality glass exported worldwide including Europe.
  • State of the art machinery from Bystronic Germany.
  • Single joint spacer used with automatic bending for increased accuracy and 100% reliability.
  • Only Dow Corning quality bond certified insulation in India
  • Automatic sealing robot for fast productivity.
  • Using European products only NO Chinese materials like silicon, spacers etc are used.

Various Applications of Insulating Glass

Facades

Project Gallery

Home Windows

Visicoolers & Food Display Units

Door View Panels

Clean Rooms

Railways

Project Gallery

Insulating Glass – Frequently Asked Questions (FAQs)

  • The aluminum spacers are cut to size, filled with desiccant and joined at the edges in the form of a frame.
  • Primary sealant butyl (Polyisobutalyne) is applied to the edges and made ready to be incorporated in the assembly. Glasses are washed and dried on line and conveyed to the assembly for last inspection and assembled with the aluminum spacer in which primary sealant has already been applied.
  • The assembly is then pressed & conveyed to the robotic applicator or to application table for applying the secondary sealant which is two part structural silicone. Suitable time for curing is allowed before final cleaning and transportation.
  • GSC also offers gas filled units.

The sandwiches are then stacked in a high pressure autoclave where PVB is cured under high pressure and temperature as per heat pressure cycle chart. The entire processing is done with computerized state of the art machine and technical assistance of M/s. Scholz of Germany and DuPont of USA. All basic products, heat strengthened glass and toughened glass can be laminated.

 
  • Insulated Glass Unit(IGU) made of two or more glass, which have separated by an air gap and edge-sealed together with the use of silicone.
  • The edge seal not only binds the individual sheets of glass together to maintain the mechanical strength of the joint but also protects the space between the glass from outside influences.
Desiccant is used to absorb the moisture coming through the seal.
Generally silver and black colored spacers are available and widely used, apart from these two there are other color options but they are made to order.
  • SGP (SentryGlass) inter-layer.

  • Color PVB. etc

A normal spacer is connected at four joint with corner keys this gives the possibility of four failure points. Using a single joint bent spacer reduces the risk element significantly.
 
  • As a standard 4mm to 6mm silicone bite is used for window applications.
  • For structural application this has to be calculated as:-

Minimum Sealant Depth= Glass Short Span(mm) X Total Dynamic Load(kPa) X 0.5T / 140kPa

Where,

  • kPa – Kilo-Pascals.
  • MM – Millimeter
  • T- Thickness

References: Page 88, Architectural Glass Guide, Federation of  Safety Glass.

Insulated Glass mainly used for:-
  • Insulation: Saves on heating and cooling, by air to air heat transfer.
  • Prevention of Dew Condensation: Pleasant view through in rainy or high humidity climates.
  • Versatility: Enables to use larger glazed area for greater see through and natural light.
  • Retards Sound Transmission
  • Pleasant Room Temperature
  • Strength
No, Laminated glass is not good for heat reduction.
60 MM is the maximum thickness of laminated glass which can be reached through multiple glass and PVB inter-layer combinations.

No, Laminated glass is not good for heat reduction.