14Feb

Soundproof Windows Toronto: STC Ratings & Noise Reduction Guide

If you are updating your home or condo in the GTA, noise is likely one of your biggest concerns. Living near the Gardiner, a streetcar line, or a busy downtown intersection means constant sound. Many homeowners ask if "soundproof" windows are a real thing or just a marketing term.

Delco Windows is committed to providing clear, honest information. While no window can block 100% of outside noise, the right combination of glass and frame design for your replacement windows can reduce sound by up to 90%. Here’s how to choose the right setup for your Toronto home.

Measuring Window Soundproofing with STC Ratings

When comparing replacement windows, you will see a measurement called the STC (Sound Transmission Class) rating. This rating measures how much sound a window stops.

Standard Double-Pane Window: Usually has an STC of 26 to 28.
Acoustic Upgrades: These can push the rating to 34 or higher.

The higher the number, the quieter your room will be. Even a jump of 10 points can make the perceived noise in your room feel 50% quieter.

What Actually Works for Noise Reduction?

Many people assume that adding more panes of glass is the only way to stop sound. However, triple pane windows are primarily for energy efficiency. For noise, we focus on glass density and vibration.

1. Laminated Glass: Laminated glass uses a thin layer of plastic (PVB) sandwiched between two panes of glass. This layer acts as a dampener that breaks up sound waves. This is the "gold standard" for condos in the Entertainment District or near Pearson Airport.

2. Asymmetric Glass Thickening: Using two different thicknesses of glass (for example, one 3mm pane and one 5mm pane) is highly effective. Because different thicknesses vibrate at different frequencies, they cancel each other out. This is excellent for blocking the low-frequency rumble of Toronto buses and trucks.

Choosing the Right Frame and Style

A window is only as quiet as its seal. If air can leak through the frame, sound will follow. Certain window styles offer tighter seals than others:

Casement Windows: Our professional team installs casement windows that provide a compression seal specifically designed for maximum soundproofing.
European Tilt and Turn Windows: For those seeking premium performance, we offer European tilt and turn windows which are known for having some of the highest air-tightness ratings in the industry.
Fixed Picture Windows: Since they do not open, our fixed picture windows offer the absolute best sound protection for rooms where ventilation is not required.

Toronto Specific: Street Noise vs. Condo Noise

Our window replacement Toronto experts recommend different solutions based on your specific location:

Main Arteries (Hwy 7, Bloor, or Queen St): We recommend Asymmetric Glass or Laminated options.
High-Rise Condos: Laminated glass is often necessary to block wind whistling and high-altitude traffic echoes.

Final Thoughts

Upgrading to soundproof windows can transform your home into a quiet sanctuary, adding both comfort and long-term property value. But achieving real results requires the right combination of glass technology and airtight installation.

Delco Windows guides Toronto homeowners through every step of the soundproofing process from selecting the right STC-rated glass to ensuring precise, gap-free professional installation. Our goal is simple: block out city noise and help you enjoy a quieter, more peaceful home.

Ready to quiet your home? Contact Delco Windows today for a free consultation and personalized quote.

Read Our 5-Star Testimonials

Amazing service and quality products. Installation was on time and on budget. Our windows look awesome. Edan gave us his full attention from the first call and every step of the way after. Highly recommend.

Adam Rivers

New windows and door for basement and new metal/glass back door for main house - even through my indecisiveness and the covid-19 challenges Ayal and his installers were patient with me and I am very happy with the look and quality of the install.

Geraint

It was a pleasure dealing with Jack and all Delco's stuff. The windows arrived on the date for which were promised. The quality of the service, product and workmanship were excellent. I would gladly recommend Delco to anyone need Windows and Doors

Ruven Y.

We're so happy with our new front door. Very high quality finish, beautiful window. Installation was impeccable and done very quickly. Hinge and 3-point lock mechanism fit perfectly and feel very solid. Very attentive customer service. Door really ups our curb appeal!

Jim Bird

I just had my front door replaced and cannot say enough good things about this company. From start to finish their professionalism is outstanding, and the workmanship excellent. Would highly recommend

Maureen Fuller

Delco supplies my windows and doors for renovations throughout the GTA. Edan and his staff are the best. Well priced quality products and personalized service. Highly recommended.

Noah Klar

We have 3 sliding doors and a double front door replaced. All work was done professionally but well qualified craftsman. Watching them work it was clear they new what they were doing and work is first class.

R. Pierce

We used Delco to replace our windows and patio door and door glass inserts. We are very happy with the quality of the windows and patio door and were very impressed with the installers as well who were very professional and clean. Thank you Nasho and George for your hard work and patience. Also, a big thank you to Ayal who always returned my calls and answered all my questions.

Sandra

Delco provided all the exterior doors for our new home build. Ayal was great and the company is very customer service oriented. The doors look beautiful, the hardware is high end and the install went very well. Overall we are very happy with the product and service.

Sarah

Ayal and Edan were great to work with. They provided extensive product knowledge and had a great selection in their showroom. The windows and doors changed the whole look of the house and gave a much needed modern yet classic update. Great quality and workmanship! Thank you!

Stephanie Lannaci

Both my wife and I could not have been happier with the product and service displayed by the owner and the installers. They had kept true to there word and the timelines. The process was catered to our schedule and was seamless.

Fabrizio Macieri

Had a great experience with Delco. They were professional and did a great job on time.

Joey Oliveira

Our experience with Delco Doors has been very good. We needed to replace out front door. Our old 6 feet Steel doors were removed and replaced with Delco 8 feet Fiberglass Doors. The installation went very smoothly, and the guys made sure that everything was fitting squarely and tight. They cleaned up after they were done and were very pleasant to work with. Would highly recommend them.

Angie Gandhi

A fantastic company to deal with from start to finish. They were professional, courteous and the project was completed in the timeframe agreed upon. Would highly recommend Delco.

Linda

I would recommend Delco Windows and Doors without any hesitation. The quality of the products is very good, the installation exceeded my expectations and the responsiveness and punctuality is impressive.

Serban Dinca

Very good and timely service. A pleasure to work with Edan Next time I need windows and doors I will definitely call them again

Adrian Nema

Recently ordered a custom window from Delco. We are extremely happy with the level of customer service - Elyse went out of her way to notify us when the window came in and came in to work on her day off so we could come pick up the window. If we need another window we will definitely come back to Delco!

Jonathon & Sheri Mcintosh

I would highly recommend this company, the final product was beyond my expectations, My new front door makes my house standout so happy thank you Delco Windows and doors. I will definitely use Delco Windows and doors again in the future thanks to Edan and the installers

Maria

Existing door replacement is a delicate project. I am very satisfied with job well done by Ayal Jack and his installer. Highly professional team, they know their business well, easy to deal with, very accommodating. He guided us step by step to select the best fit for our purpose.

Alfy

I would highly recommend this company. They were very easy to deal with, accommodating and professional. The final product was beyond my expectations. The products completely transformed the front of my house and for sure increased its value and curb appeal. Thanks!

Happy experience from start to finish. Thank you to Edan for going out of his way to meet us late one evening and his helpful consultation in the showroom especially thank you to the extremely professional, clean and friendly crew of installers. Everything was as promised, the men arrived on time, their work was immaculate and complete, their craftsmanship beyond reproach.

Esther Tobin

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