Experience the Difference: NTI STC Rated Sound-Performance Windows

In today’s busy world, peace and quiet inside your home is no longer a luxury—it’s an expectation. Whether you live near a major road, beside a busy school, under a flight path, or in a lively urban neighbourhood, NTI’s STC Rated Sound-Performance Windows are engineered to keep the outside world exactly where it belongs: outside.

Every NTI STC Rated window is fully lab-tested and engineered to meet or exceed its certified Sound Transmission Class (STC) value. These ratings are verified through controlled acoustic testing environments, ensuring you receive reliable, real-world sound performance—not just theory.

What Is STC?

STC (Sound Transmission Class) measures how effectively a window or building component reduces airborne sound.
Simply put:

Higher STC rating = Better sound insulation.

For residential homes, STC performance is especially valuable when living near:

Highways or major roads
Airports or flight paths
Schools and playgrounds
Dense urban neighbourhoods
Active construction zones

If your home experiences consistent environmental noise, an STC-rated window can make a significant difference in comfort.

How NTI Windows Compare

Typical Building Code Requirement: STC 32
NTI Sound-Performance Windows: Up to STC 38

That’s more than a 60% improvement in perceived sound reduction—a meaningful upgrade you can feel immediately.

Real-Life Sound Differences

STC 32:

You can still hear traffic
Conversations outside remain audible
Lawn equipment and passing cars are noticeable

STC 37–38:

Conversations become muted or disappear entirely
Leaf blowers, cars, and street noise are significantly reduced
Your home becomes a quiet, comfortable retreat

Ideal For:

Homes near busy roads or highways
Urban neighbourhoods with dense housing
Light sleepers or families with young children
Home offices, bedrooms, and media rooms
Anyone seeking a quieter, more peaceful indoor environment

Why STC Matters in Your Home

Peace & Quiet
Enjoy meaningful noise reduction from traffic, construction, and neighbouring properties.

Better Quality of Life
Improved sleep, better concentration, and a calmer living environment.

Increased Resale Value
Buyers increasingly value comfort upgrades—sound-performance windows stand out.

Energy Efficiency Synergy
STC glass complements insulated, energy-efficient window systems for all-around enhanced performance.

QUIET IS THE NEW LUXURY.

NTI Sound-Performance Windows are engineered to exceed building code and redefine everyday comfort.

NTI Sound-Performance Window Options

Below is a simple guide to our STC-rated window configurations, designed to help you select the perfect solution for your space.

High Fixed Window — STC 36

Solid acoustic protection with a sealed, non-operable frame.
Ideal for upper-floor applications where maximum quiet and minimal maintenance are preferred.

Casement / Awning Window — STC 38

Our highest-performing operable window for sound control, featuring a tight seal and multi-point locking system.
A top choice for homeowners who want both performance and ventilation.

Low Fixed Window — STC 37

A strong acoustic barrier designed for street-level or basement windows.
Perfect for reducing ground-level noise where traffic and foot activity are most noticeable.