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Custom Window Inserts for Any Space
Magnetite® custom window inserts are precision-built interior inserts designed to fit virtually any existing window or door opening. Custom-measured to your specifications, they are ideal for residential, commercial, historical, and condominium applications. Whether you need acoustic window inserts or soundproof window inserts to reduce outside noise, or energy efficient window inserts to improve comfort and lower energy costs, Magnetite solutions help reduce noise, increase energy efficiency, limit condensation, and block UV.
Our custom window inserts are available in acrylic, tempered glass, or laminated glass, with 3mm or 6mm thickness options and two design styles, ProCore and SlimLine. This flexibility allows us to match performance, appearance, and budget to your specific needs.
Contact us to find the best custom window insert solution for your home, or scroll down to learn more.
Acrylic window inserts are a lightweight and cost-effective option for custom window inserts, making it easy to install, remove, and retrofit. When paired with a proper air gap and airtight seal, acrylic provides effective sound reduction, improved energy efficiency, and UV protection, helping create a quieter and more comfortable indoor space.
Acrylic inserts are well suited for budget-conscious projects where weight, removability, and overall value matter most. While laminated glass offers higher sound control in demanding environments, acrylic remains a practical and proven solution for many homes and buildings.
Laminated glass provides the highest level of sound control for custom window inserts. Made from two layers of glass bonded with a clear interlayer, laminated glass absorbs vibration rather than transmitting it, which significantly reduces both high-frequency and low-frequency noise.
In addition to superior sound reduction, laminated glass offers strong UV protection, improved security, and long-term durability. This makes it the preferred option for homes and buildings where maximum performance and comfort are required.
Tempered glass is a strong, durable option for custom window inserts and is commonly selected for safety, clarity, and building code compliance. The heat-treated glass offers excellent impact resistance and long-term durability, making it a reliable choice for both residential and commercial applications.
Tempered glass provides moderate sound reduction and performs well in everyday noise conditions. While it does not offer the same level of acoustic damping as laminated glass, it remains an effective solution when strength, safety, and structural performance are the primary considerations.
Find the Best Window Insert
Material for Your Needs
We offer multiple insert materials to suit different sound reduction needs, durability preferences, and budgets.
| Benefit | Acrylic | Tempered Glass | Laminated Glass |
|---|---|---|---|
| Sound Reduction | ★★☆ | ★★☆ | ★★★ |
| Durability | ★★☆ | ★★★ | ★★★ |
Window Insert Thickness Options
for All Materials
All insert materials are available in two thickness options, each offering different performance and weight characteristics.
| Thickness | Best For | Sound Reduction | Weight |
|---|---|---|---|
| 3MM | Light to moderate noise | Good | Lighter |
| 6MM | Louder environments | Better | Heavier |
High-Performance Insert Panels
Magnetic Seal System
Sealing and Reinforcement
Custom Fabrication

EXCELLENT Based on 72 reviews Posted on Steve ColeTrustindex verifies that the original source of the review is Google. I work from home and couldn't stand the sound of passing traffic and screaming kids on my street. I got Magnetite windows installed and it cut the noise right down. Of course nothing is 100%, but Magnetite windows made a massive difference. And they cost me next to nothing compared to what brand new soundproof windows would've costed. Alfredo and his team are pros. Highly recommended if you want a more peaceful home for a very reasonable price.Posted on Patrick DuncanTrustindex verifies that the original source of the review is Google. Solid 4.5, thank you to Alfredo and Jaskaran for the setup and installation! There is definitely a noticeable decrease in traffic noise, so it does work. I subtracted 0.5 since there are slight scuffs and marks on new frame, but that’s me being a perfectionist.Posted on Steffen STrustindex verifies that the original source of the review is Google. Works better than expected, it is indeed sound proofingPosted on Terry He (何天宇)Trustindex verifies that the original source of the review is Google. Martin and Rashad did an excellent job installing a custom-fit entire floor-to-ceiling wall of Magnetite window inserts for my guest bedroom in my condo. We were having a common issue of some construction noise in a busy Toronto location. The bedroom has been quiet and serene ever since the installation. For the amount of glass, customized fabrication, and professionalism/friendliness from Martin, I think the price was worth it for our result. I highly recommend Martin and would definitely work with him again. Thank you guys!Posted on Larissa KatzTrustindex verifies that the original source of the review is Google. I was so extremely happy to have found a solution for soundproofing our windows. The level of service provided by Magnetite Canada was exceptional. I had a very tight deadline for the production and installation of the panels, and all my requests were accommodated and treated with utmost care. I am forever grateful for Alfredo for speeding up the production, and for Martin for his excellent and efficient work on the installation. This company is not only professional, but they also treat you with care and attention.Posted on Teresa BernaudoTrustindex verifies that the original source of the review is Google. Martin and Rashad did a great job, measuring and installing, the head office staff were very professional in coordinating the work and we are very happy with the noise reduction results! Highly recommended!! Thank you Magnetite!!!Posted on Adhiraj SinghTrustindex verifies that the original source of the review is Google. Great product! We got these for our floor to ceiling windows in our condo downtown, to get rid of the hum from the highway that our stock windows just didn't do a very good job of cutting out. Was a bit unsure how much of a difference they'd make, but it sure was significant and has brought a ton of calm & quiet to the room, haha. Alfredo & Martin were excellent through the process - precise communication and were on time for measurements & installation. Even though initially they had said it might be a couple of weeks, I think they had them ready and installed in pretty much a weeks time.Posted on Terry TaylorTrustindex verifies that the original source of the review is Google. Martin did a great job making sure the measurements were accurate and installation was performed with care. He explained how to maintain the inserts and made sure everything was cleaned up after install. And Alfredo, thank you for the early delivery! We are very happy with the inserts… yes, they work!!Posted on Carmen L.Trustindex verifies that the original source of the review is Google. I live on a major street and my daughter was complaining about the noise of the cars passing by during the nighttime when she was trying to sleep. Alfredo responded promptly via email and Martin, their installer, came on the same day that I confirmed to take measurements of my windows. The window inserts were ready the following week. Martin did a fantastic job on the installation and it only took him about 30-45mins. Although Alfredo mentioned a 70% reduction in noise, I’ve noticed it to be much more. I cannot hear cars passing by anymore unless they have a loud exhaust or it’s a big truck. The most important thing is my daughter now sleeps well and has not mentioned even a single time about hearing the cars since we’ve installed the inserts. I am grateful to Magnetite, Alfredo, and Martin for their service and customer care. Thank you!
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FAQs
Custom window inserts are interior panels made to fit your existing windows. They install on the inside of your home and create an additional insulating barrier that improves comfort, reduces outside noise, and increases energy efficiency without replacing your original windows.
High quality inserts are very effective at reducing noise when properly measured and sealed. Acoustic window inserts and soundproof window inserts help reduce traffic noise, construction sounds, and general outdoor disturbances by minimizing air gaps where sound travels.
While no solution can make a window completely soundproof, soundproof window inserts significantly reduce noise by adding an extra interior layer and increasing the air space between panes. This is one of the most effective non invasive ways to quiet a room.
Yes. Acoustic window inserts are designed to reduce common urban noise such as traffic, sirens, and street activity. They are ideal for condos, homes near busy roads, and offices that need quieter interior spaces.
Custom window inserts are designed to be low profile and discreet. They install on the interior side of your window and preserve the original exterior appearance, making them a popular option for property owners who care about aesthetics.
Yes. Window inserts improve insulation by reducing drafts and heat transfer. This helps maintain consistent indoor temperatures, lower heating and cooling costs, and improve comfort throughout the year.
Yes. Custom window inserts are fully removable, making them easy to clean or remove seasonally if needed. This makes them a flexible option for homeowners and renters who want a non permanent upgrade.
If you want, I can also rewrite these to be slightly more sales focused or more technical depending on how the rest of the product page is positioned.
Yes. All custom window inserts are individually measured and manufactured to fit each window opening. This ensures proper sealing, better acoustic performance, and long term durability.