Double Glazed Glass

Double Glazed Glass are two glass panes a.k.a. “lites” separated by a gap (filled with air or inert gas), assembled in parallel to form a single unit. They are also commonly referred to as Insulated Glass. The glass sheets in such a composite unit are connected by a spacer, using sealants to reduce water vapor penetration. The spacer is a metal or polymer strip that separates the two panes of glass. Typically, spacers contain a desiccant (drying agent) to remove moisture trapped in the air space.

components of insulated glass

A close alternative to Laminated Glass where two glass layers are closely and permanently sealed; double glazed glass on the contrary has a layer of air that is sandwiched between 2 separate glass panels. This glass type is commonly found in new buildings for thermal insulation and in Singapore homes for soundproofing.

Glass Panel in high rise singapore building

Benefits of Double Glazing

While the key usage of such type of glass would be to deliver immunity to noise and raise acoustic performance there are other credible advantages it offers –

Soundproof Interiors

The onslaught of Covid 19 has seen increasing number of people in Singapore stay indoors and limit travel. As more people work from home taking zoom and video conferencing calls in their study/bed rooms; noisy neighbours, construction sites, highway traffic and such can be a constant disturbance. Herein, Soundproof Windows and Doors made of noise cancelling glass panes give the ideal solution in reducing noise leakage.

Reduction in thermal loss

The insulation factor of such a Glass prevents unwanted external heat in the daytime from coming indoors. At the same time keeps indoors cooler with air-conditioned controlled temperature. Thereby reducing energy costs for commercial buildings with Glass Curtain Wall Systems

Unhindered Exterior Views

For Building with Glass facades which are most common nowadays, this type of glass offers good transparency by reducing the incidence of condensation. Thus, giving unrestricted view of outdoors in all types of the weather

Energy Efficient Buildings

Building and Construction Authority (BCA) recognises developers and building owners for efforts in environmental sustainability in the built environment. And double glazing with Low Emissivity (Low E) glass offers many energy conservation properties, especially for building with skylights and glass façade. Besides reducing cooling costs, it helps natural daylight to illuminate the interior.

Curtain Wall of building in Novena

Cost and Thickness of Double Glazed Glass

To get an estimated cost of double glazed glass we need to calculate it for the individual components of the unit (hence the name Double Glass Unit or DGU)

DGU consist of a glass pane plus spacer (air or inert gas) plus another glass pane. The glass pane can be monolithic or laminated, so we have to work out the cost in 3 components.

  1. Glass Pane – 5 ~ 6mm or laminated 11.52 or 13.52 mm
  2. Air Spacer – The common ones are 6 mm or 12 mm
  3. Glass Pane (same as 1)

Estimated Cost in Square Meters –

  • 5mm clear tempered + 6mm air spacer + 5mm clear tempered is $24 + $22 + 24 = $70 per SqM
  • 6mm clear tempered + 12mm air spacer + 11.52mm clear tempered laminated glass is $25 + $26 + $95 = $146 per SqM.

Considerations when Soundproofing is the key requirement

For Windows, the profile also needs to change something thicker n order to fit the DGU thickness.
For STC (Sound Transmission Class) ratings and certification testing cannot be done just for the double glazed glass alone. Rather it has to be tested with the frame as a complete unit. So, the Glass supplier can only state STC ratings as a guideline.

Common Applications of Double Glazed Glass

Given the advantages that such glass offers it is widely employed for a number of applications such as

  • Soundproof Windows and Doors
  • Glass Curtain Walls for Buildings
  • Buildings aiming for Green Mark Certification
  • Airport Control Towers and Viewing Decks

Double Glazed Glass Supplier in Singapore

House Of Glass is a one stop shop for glass in Singapore. We offer supply, installation and replacement services for double glazed glass. Be it homes, offices, commercial building or construction projects we are at your service for the following –

  1. Supply of double glazed glass for panels, partitions, windows and doors
  2. Custom size fabrication of Glass Panels
  3. Double glazed glass replacement

Call Us for a No Obligation Quote today!