About Glass Weight and Density in Construction
Glass is a critical component in modern architecture, used for windows, facades, partitions, and skylights. Understanding its weight is essential for safe installation and structural load calculations. Glass weight depends primarily on its type, thickness, and area.
Typical Glass Densities
- Float / Clear Glass: 2.50 g/cm³ – standard for most windows.
- Tempered Glass: 2.50 g/cm³ – stronger and heat-treated, used for doors, facades, and balustrades.
- Laminated Glass: 2.47 g/cm³ – two or more layers with PVB film, used in safety glazing and skylights.
- Low-E Glass: 2.60 g/cm³ – energy-efficient coating, used in modern office facades.
- Patterned / Frosted Glass: 2.45 g/cm³ – decorative, used for privacy and interiors.
- Wired Glass: 2.60 g/cm³ – reinforced with wire mesh for fire resistance.
- Acrylic & Polycarbonate Sheets: ~1.2 g/cm³ – lightweight alternatives used in skylights, signage, and domes.
Sample Glass Weights
| Glass Type | Thickness | Panel Size (m²) | Approx. Weight |
|---|---|---|---|
| Clear Float | 6 mm | 1 m² | ~15 kg |
| Tempered | 10 mm | 1 m² | ~25 kg |
| Laminated | 12 mm | 1 m² | ~30 kg |
| Low-E | 6 mm | 1 m² | ~16 kg |
| Polycarbonate | 6 mm | 1 m² | ~7 kg |
To find glass weight, multiply area (L×W) × thickness × density. This calculator automates that, converting to kg or lb based on your chosen unit system.
Applications
- Building facades and curtain walls
- Windows, skylights, partitions
- Shower enclosures and railings
- Interior design and furniture glass
Always include glass weight in structural load analysis, especially for large panels or suspended installations.