Acoustic Performance of Glass: What Architects Should Know

Although glass looks fantastic on buildings, it is ineffective at blocking noise. Normal glass doesn't block sound much, from cars honking, people talking, or machines buzzing. Acoustic glass can help with that. Lowering outside noise makes this specially made glass calmer and more comfortable in interior environments.

Soundproof glass can make a big difference in how buildings feel inside in busy areas like Guntur and other growing cities across Andhra Pradesh. Proper acoustic design adds real value, whether it's a home near a highway or an office next to a noisy street.

In this blog, we'll explain how the acoustic performance of glass works, how it's measured, and how to pick the best system for your project. We'll also help you understand what to look for when sourcing soundproof glass in Guntur or elsewhere in the state.

Acoustic performance refers to how well a material, like glass, can block or reduce sound. Too much sound can easily pass through untreated glass windows or façades in areas with heavy traffic or noisy environments.

This is why architects often rely on acoustic glass—especially in spaces where peace matters. From homes and schools to offices and hospitals, using the correct type of glass for soundproof architecture is key to improving comfort, focus, and well-being.

Not only In Andhra Pradesh almost in most major cities buildings have to meet both thermal & noise insulation related requirements. Acoustic glazing can help meet both requirements without compromising on light and budget.

You don't need to be a sound engineer to understand the basics. Two main ratings help measure how well glass blocks noise:

1. STC (Sound Transmission Class)
This rating shows how well the glass reduces everyday noise—like speech, music, or indoor sounds.

• Single-pane glass: STC 20–25
• Double-glazed units for soundproofing: STC 28–33
• Laminated or layered systems: STC 40 or more

2. OITC (Outdoor-Indoor Transmission Class)
OITC primarily focuses on low-frequency noises like traffic or construction. It is mainly used in buildings that are too close to roads, airports, or railway lines, where deep sound vibrations are a big concern.

3. What Improves These Ratings?
To get better acoustic performance, glass systems often include:

• Laminated layers with sound-dampening materials
• Wider air gaps between panes
• Gas-filled cavities, like argon, are between layers

All of these work together to reduce how much sound gets through.

You don't need extreme soundproofing for every project—but in many cases, better noise reduction in buildings leads to better results. Consider acoustic glass when:

• The building is close to a highway, airport, or railway
• You need privacy in offices, meeting rooms, or clinics
• The design is focused on well-being, such as in schools or wellness centres
• You're working in busy cities like Guntur, where construction and street noise are common

Most projects demand an STC rating of 35-40 for a peaceful interior.

Different applications demand different types of glass: For your easy understanding, we have listed them below:

Monolithic Glass
Basic single-pane glass

• STC rating: 20–25
• Not suitable on its own for soundproofing

Laminated Acoustic Glass
Multiple layers of glass bonded with a sound-absorbing interlayer

• STC rating: 30–40
• Helps reduce both airborne and impact noise
• Also offers UV protection and added safety

Double Glazed Units (IGUs)
It has two glass panes separated by an air or gas-filled gap

• STC rating: 28–35
• With laminated layers added: STC 40–50
• Ideal for both residential & commercial architecture

Triple Glazed or Multi-Chamber Units
Three layers of glass with more insulation in between

• STC rating: 45+
• Ideal for high-noise areas like airports, railway stations, or boardrooms

Acoustic Interlayers
Soft-core interlayers present inside the system can absorb vibration better than the normal ones. Increasing sound insulation without making the glass thick & heavy.

• Know your noise environment: Are you dealing with traffic, machinery, or human voices? Each needs a different approach.
• Understand the required STC/OITC: Not all buildings need the same level of sound protection.
• Follow building noise regulations. Andhra Pradesh: This is especially important near hospitals, schools, or residential zones.
• Balance weight and structure: Heavier glass needs stronger frames. Plan accordingly.
• Source from local suppliers: Choose experienced acoustic glass manufacturers in Andhra Pradesh who understand regional needs.
• Installation matters: Poor installation can ruin even the best product. Make sure seals, frames, and joints are handled professionally.
• Always check test data: Look for tested STC/OITC ratings not just sales claims.

Acoustic glass is a useful way to raise the standard of our living and work areas, not just a trendy modern design. Soundproof glass systems can significantly improve office workers' concentration and quiet a house next to a noisy road.

The demand for Acoustic glazing is increasing therefore it is important for all the architects & builders in expanding cities to start figuring out the best options.

If you are interested in the best deals for acoustic soundproof glass, then do check out Tufftron, a reputable glass manufacturer which provides cost-effective solutions for projects requiring comfort, clarity, and quiet.