Is it true that by using glass for walls instead of bricks will save money in the construction of a building?

When discussing "using glass for walls," it often refers to glass facades. While visually appealing, glass facades are considerably more expensive than traditional brick walls, especially in India, due to higher material costs and the need for highly skilled labor.

Initial Direct Costs (India)

Below is a comparison of the approximate initial costs of various façade types:

• 1/2 Brick Wall (with double coat plaster and premium acrylic exterior paint): ₹1,600/sq.m.
• 1 Brick Wall (with double coat plaster and premium acrylic exterior paint): ₹2,000/sq.m.
• Aluminum Composite Panels (ACP): ₹9,000/sq.m.
• Glass Facades: ₹16,000/sq.

Clearly, glass facades are significantly more expensive than brick walls.

Indirect and Long-Term Costs

1. Reduced Structural Weight:

Glass walls, being lighter than brick walls, reduce the building's dead weight. This can lower the cost of the RCC or steel structure needed for support. However, these savings are generally not enough to offset the substantial cost difference between glass and brick walls.

2. Energy Requirements:

The climate plays a key role in determining the energy efficiency of glass facades:

• Colder Climates: Glass facades reduce heating costs due to natural greenhouse effects. They also allow better natural illumination, cutting down on lighting expenses.
• Hotter Climates (like India):Glass facades lead to increased energy consumption. The intense sunlight often necessitates the use of curtains or blinds, which reduces the natural lighting benefit.
• The greenhouse effect raises indoor temperatures, demanding more from air conditioning systems. This can make the interior feel like an inefficient solar cooker.
• While advanced glazing technologies claim to improve energy efficiency, their impact is limited and often comes at the expense of illumination.

3. Maintenance Costs:

Glass facades and ACP require minimal structural maintenance but need regular cleaning to maintain their aesthetic appeal. These ongoing cleaning costs, combined with high initial investments, often do not justify the monetary benefits in the long run.

Conclusion

While glass facades have architectural and aesthetic advantages, their high initial and indirect costs make them less economical compared to traditional brick walls, especially in hotter climates like India. For most projects, a thorough cost-benefit analysis is essential before opting for glass over conventional materials.

Sources

1. Glassroom Dubai for the info glass Types
   
2. Location
3. Personal Experience
4. District Schedule of rates for the rates of Brick walls.