Double Pane Window Replacement Toronto & GTA
Energy Efficient Glass
Double pane window replacement in Toronto & GTA. Replace just the glass unit, not the frame; save 60-80%. Low-E, argon gas, ENERGY STAR options. Free quote.
What to do while you wait.
Keep children, pets, and anyone without proper footwear away from the broken glass. Shards can scatter several feet from the break point.
Glass still attached to the frame can fall without warning and cause deep cuts. Leave loose pieces alone until our technician arrives.
If you must walk near the area, wear closed-toe shoes and work gloves. Thin slippers or bare feet are a serious hazard.
Use a heavy tarp, thick cardboard, or plastic sheeting secured with tape to block wind, rain, and debris until we arrive.
Take photos of the damage from both inside and outside. These help our technician prepare the right glass size and type before arriving.
Call 647-803-2730. Our emergency line is staffed 24/7 including nights, weekends, and holidays.
Overview
Double-pane windows - also called insulated glass units (IGUs) or thermal panes, are the standard for energy-efficient homes and buildings across Ontario. When the sealed unit fails, you lose insulation, clarity, and comfort. OhMyGlass Window and Door Repairs specializes in replacing only the glass unit itself, not the entire window frame, which saves homeowners 60 to 80 percent compared to full window replacement. We serve Toronto and the Greater Toronto Area with a range of IGU options including Low-E coatings and argon gas fills to maximize your home's thermal performance.
How Do Double-Pane Windows Work?
A double-pane window consists of two panes of glass separated by a spacer bar, typically aluminum or a warm-edge composite material. The perimeter is hermetically sealed with a primary seal (usually polyisobutylene) and a secondary structural sealant. The cavity between the panes is filled with dry air or an inert gas such as argon or krypton. This gas-filled cavity acts as an insulating barrier, significantly reducing heat transfer through the window compared to a single pane. The spacer bar also contains a desiccant that absorbs any residual moisture inside the unit to prevent internal condensation.
How Do You Know Your Sealed Unit Has Failed?
Sealed unit failure is one of the most common window problems in the GTA's climate, where wide temperature swings stress the seals over time. Recognizing the signs early prevents further energy loss.
What Glass Options Are Available for Replacement IGUs?
When we replace your sealed unit, you can choose from several glass and gas options to improve energy performance beyond the original installation.
a microscopically thin metallic coating applied to one surface of the glass that reflects infrared heat. Low-E glass can reduce heat loss through the window by 30 to 50 percent compared to uncoated glass.
argon is denser than air and reduces convective heat transfer within the IGU cavity. It improves the window's insulating value by approximately 5 to 15 percent over dry air.
even denser than argon and used primarily in triple-pane units or where narrower cavities are required. It offers higher performance but at a higher cost.
the GTA falls within ENERGY STAR Canada Climate Zone 2 (3,500 to 6,000 heating degree-days). Qualifying windows must meet a U-factor of 1.40 W/m²K or lower, or an Energy Rating of 29 or higher.
available for IGU replacement where building code or personal safety requires it, such as near doors or at low heights.
How Much Can You Save with IGU-Only Replacement?
Replacing just the insulated glass unit while keeping the existing frame is one of the most cost-effective home improvements available. A full window replacement - frame, hardware, and glass - can cost several hundred to over a thousand dollars per window depending on size and type. An IGU-only replacement uses the same frame and trim, which eliminates the cost of new framing materials, interior and exterior finishing, and the labour to remove and reinstall the full unit. Most IGU replacements are completed in under an hour per window with no damage to your walls, trim, or paint. Contact OhMyGlass Window and Door Repairs for a free on-site assessment to confirm whether your frames are in good condition for IGU-only replacement.
Areas we serve
Newmarket
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Etobicoke
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Markham
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North York
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Richmond Hill
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Scarborough
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Toronto
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Vaughan
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Mississauga
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Brampton
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Related pages
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Call 647-803-2730 for 24/7 dispatch or request service online. We respond quickly across the GTA.