Noise pollution is a growing problem, and the World Health Organization has issued statements on its dangers. Despite this, there is simply not enough being done to curb noise pollution. Noise harms us slowly over time – so stopping its effects early is worth every effort.
The question isn’t whether we should reduce noise in our homes, offices, and daily lives – it’s how. Soundproofing is an action you can take right now, and will continue to benefit your family for generations, even when legislation finally catches up.
Some of the most common options for soundproofing windows are:
- Replacement windows
- Soundproof window inserts, also known as acoustic window inserts
- Soundproofing curtains
Soundproof curtains don’t work very well; they lack critical elements that are required for sound insulation for windows, and furthermore block light from coming into your home. Many sound resistant windows on the market are also not as effective as their product pages lead you to believe.
We produce soundproof window inserts that can stop up to 95% of the noise entering your home through a window. These are more effective and efficient than most other solutions on the market, especially for the cost.
You may have some misconceptions and questions about soundproof window inserts. Let’s clear those up with some data.
Do Soundproof Window Inserts Work?
The effectiveness of soundproofing material is measured with a Sound Transmission Class rating, or STC rating. Some average STC ratings include:
- Soundproof replacement windows: 44 STC
- Soundproof interior walls: 41 STC
- Exterior walls: 39 STC
- Interior walls: 33 STC
- Standard double pane windows: 29 STC
- Soundproof curtains: 23 STC
Our window inserts have an STC rating of 48, which is well above the minimum of 40 STC required to be considered “soundproofing.”
So what does that mean in practice?
It means reducing the sounds of a busy highway outside your window to the level of a quiet library. Products with this sound transmission class rating can drop readings on a decibel meter from 52 dB to 36 dB in real-world applications.
Are They Expensive?
Purchasing a soundproof replacement window costs around $900 on average. It also requires more labor, is more invasive to the building, and may not be feasible in all situations – like a historic building or a home regulated by an HOA.
Our soundproof window inserts are significantly cheaper than replacement windows, often as little as half the price. They’re much faster to install, and comply with more codes and regulations than replacement windows. The exact price of an acoustic insert depends on the window; enter your information here for an estimate based on your unique situation.
Are Soundproof Window Inserts Durable?
Like all building materials, windows are subject to the elements all day, every day. Wind, rain, snow, and debris can cause scratches, weaken seals over time, and eventually require a window to be replaced. The lifespan of a window varies by its material, environment, and care, but you can expect to replace most windows after 15 to 30 years of use.
Our acoustic window inserts have lasted over 40 years and counting in real situations. They have the benefit of being installed in the interior, meaning they don’t suffer from contact with the elements. They’re also made from laminated glass which is quite durable, doesn’t scratch easily, and can be maintained like a standard window.

What Do They Look Like?
From the outside, acoustic window inserts are totally undetectable – unlike replacement windows, which can completely change a home’s curb appeal. This is especially important for homeowners whose HOA or other regulations require approval for exterior modifications.
On the inside, they’re still barely noticeable. They have a small, paintable frame – less than 1” thick – and don’t require modifications to your existing windows or window treatments. We offer variants that allow you to still operate your window, keeping them functional as well.
Inserts are the ideal solution for most situations in terms of cost, convenience, and efficiency. Whether you’re ready to commit or are just looking for information, get in touch with us for a free estimate today.

