The weight of double and triple glass units

The weight of glass plays big factor in architectural glazing. It is important factor when determining what type of hardware and frame profile is required for windows and doors. Glass weight also plays an important role in determining the number of workers and appropriate equipment required to lift glass into its place or if a crane is required.

The basic formula to calculate the weight of glass is as follows:

Glass weight (kg) = Glass area (m2) x Glass thickness (mm) x Factor (2.5)

Area of glass is calculated as height (m) x width (m)

If we can calculate the weight of 2mm annealed glass pane per sqm; 

Glass weight = 1 m2 x 2 x 2.5 = 5 kg/m2

The rought weights of annealed glass panes per sqm are as follows;

  • 2mm glass weighs 5 kg/m2
  • 4mm glass weighs 10 kg/m2
  • 6mm glass weighs 15 kg/m2
  • 8mm glass weighs 20/m2
  • 10mm glass weighs 25 kg/m2
  • 12mm glass weighs 30 kg/m2

Weight of double glazed units

The thickness of some typical double glass are as follows:  

  • Double glass, 4/20/4mm : 20 kg/m2
  • Double glass, 6/16/6mm : 30 kg/m2
  • Double glass, 8/16/8mm : 40 kg/m2
  • Laminated double glass, 6/16/8.8mm: 35 kg/m2

Weight of triple glazed units 

The thickness of some typical triple glass are as follows:  

  • Triple glass, 4/14/4/14/4mm : 30 kg/m2
  • Triple glass, 6/12/6/12/6mm : 45 kg/m2