Custom Window Inserts to Fit Any Space

Specialized Sliding Patio Door Inserts
custom built window inserts

WHAT IS MAGNETITE

Custom Fit to Reduce Drafts & Improve Energy Efficiency

Magnetite custom-fit magnetic window inserts are precision-measured and manufactured to reduce drafts, improve energy efficiency, and enhance comfort without replacing your existing windows. Designed for a wide range of residential and commercial applications, our inserts deliver the performance of traditional storm window inserts in a low-profile interior solution.

Custom window inserts also provide superior noise reduction for urban dwellings, offices near busy streets, or any space requiring a quieter environment. Magnetite inserts create a more comfortable atmosphere to foster better productivity and relaxation in your home or workspace by eliminating drafts and enhancing thermal performance.

Why Custom Fit Matters

Poorly fitted inserts allow air gaps that reduce insulation and sound control. Magnetite builds every insert to your exact window opening ensuring an airtight seal and consistent performance whether it’s a Canadian winter or a blazing summer.

Measurements & Installation:

Professional installation preserves warranty and ensures optimal performance

On-site measurement recommended for best results

Flexible & removable magnetic or trim-mounted systems allow easy seasonal removal

Photos and templates are taken to guarantee manufacturing accuracy

Versatility

Compatible Window Types

Our system functions as a high-performance interior storm window insert, offering similar benefits to exterior and alumnium storm window inserts while remaining removable and non-invasive.

Magnetite window inserts are compatible with a wide variety of window styles and configurations, including:

Picture Windows, Bay Windows, Awning Windows

Egress Windows, Skylight Windows

Sliding Patio Doors, French Doors & Much More

How We Measure

Our technicians take measurements of your windows to determine the ideal insert size and seal approach. Photos and templates are taken to guarantee manufacturing accuracy.

01

On-site Assessment

A technician visits to assess your windows, frame conditions, sightlines, and clearance requirements in person.

02

Precision Measurement

Every dimension is recorded including reveal, depth and frame profile with photos and templates for exact manufacturing.

03

Custom Fabrication & Install

Your insert is manufactured in Canada and professionally installed guaranteed to fit perfectly the first time.

Energy & Comfort

Enhanced Energy Efficiency & Comfort with Custom Window Inserts

Magnetite custom window inserts are designed to maximize comfort by improving energy efficiency in both residential and commercial buildings. These precision-measured inserts offer a cost-effective and sustainable solution for reducing energy consumption while enhancing indoor comfort. Our custom inserts help to keep your living spaces warm during the winter and cool during the summer by adding an extra layer of insulation. This makes them an ideal solution for homeowners, businesses, and even historical properties where replacing original windows may not be feasible.

Custom window inserts also provide superior noise reduction for urban dwellings, offices near busy streets, or any space requiring a quieter environment. Magnetite inserts create a more comfortable atmosphere to foster better productivity and relaxation in your home or workspace by eliminating drafts and enhancing thermal performance.Our range of material options acrylic and glass so you can choose the best solution for your specific needs. Whether you’re looking for a budget-friendly option or a higher-performance solution for extreme climates or high-noise environments, Magnetite provides the flexibility to meet your demands.

Material options overview

Thickness options

Window Insert Thickness Options
for All Materials

All insert materials are available in two thickness options, each offering different performance and weight characteristics.

ThicknessBest ForSound ReductionWeight
3MMLight to moderate noiseGoodLighter
6MMLouder environmentsBetterHeavier

OUR WINDOW INSERT STYLES

MAGNETITE®ProCore

Our Flagship Canadian-Patented Window Insert System
  • Top Grade virgin panel
  • Solid hollow PVC subframe optimized for more structural support
  • Robust steel strapping for stronger magnetic contact
  • Easy use handle for insert removal
  • Available in 3mm and 6mm
  • Allows for additional privacy or solar films
colour options

MAGNETITE®SlimLine

Our Legacy Window System Ideal for Low Profile Applications
  • Top Grade virgin panel
  • PVC subframe
  • Steel strapping
  • Available in 3mm and 6mm 
  • Allows for additional privacy or solar films
colour options

Why choose Magnetite

Engineered for Performance

High Performance Custom Inserts

Magnetite custom window inserts are available in acrylic or glass, allowing performance to be matched to your space and budget. Each insert delivers the benefits of an interior storm window insert without replacing existing windows.

Magnetic Seal Frame

A low-profile magnetic frame allows inserts to click securely into place, creating a tight, continuous seal that helps reduce drafts, noise, and heat loss.

Foam Trim & Reinforcement

Integrated foam trim reduces micro gaps and traps still air, improving thermal performance and supporting effective sound reduction.

Custom Fabrication

Every insert is custom measured for a clean, built-in look and lifts out easily for cleaning or seasonal access.
Magnetite® window inserts
Our Customers Frequently Asked Us

 FAQ’s

Custom window inserts are interior panels measured and manufactured to fit your exact window opening. They improve insulation, reduce noise, and enhance comfort without replacing existing windows.

A precise fit is essential for performance. Custom-fit inserts create an airtight seal that helps reduce drafts, improve energy efficiency, and support sound reduction compared to off-the-shelf options.

Yes. Magnetite inserts function as modern interior storm window inserts, providing insulation and noise reduction while preserving the exterior appearance of the building.

Yes. Custom-built window inserts are well suited for arched, bay, oversized, or uniquely shaped windows where standard products may not fit properly.

Yes. Custom window inserts Canada homeowners and businesses use are designed to handle temperature fluctuations, cold winters, and moisture conditions common across Canada.

Yes. Custom inserts are commonly used in offices, schools, healthcare facilities, and other commercial windows applications where comfort, energy efficiency, and noise control are important.

Custom inserts are available in acrylic, tempered glass, or laminated glass. Material selection depends on performance goals such as insulation, durability, or sound control.

Yes. Most custom inserts are designed to be removable, allowing for easy cleaning, ventilation, or seasonal access without permanent changes to the window frame.