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Glass & Seals

Thermal Window Repair

Drafts, condensation, and heat loss fixed at the source.

A window’s job in a North Bay winter is to keep heat in, and when it stops doing that you feel it in the room and see it on the heating bill. Thermal window repair is about the window’s whole insulating performance: the sealed glass unit, the seals around the sash, and the weatherstripping that closes the gaps. We find where the heat is escaping and fix that, rather than quoting you a new window.

The visible symptom is usually fog or condensation, and the fix for a failed unit itself is a thermal seal repair. But cold air also sneaks around the glass: worn weatherstripping, a sash that no longer closes square, or hardware that will not pull the window tight. We address all of it in one visit.

A casement window that does not seal is often a hardware problem rather than a glass problem. A worn crank operator or sagging hinges stop the sash from compressing against the weatherstrip, and fixing them restores the seal without touching the glass.

Where an upgrade makes sense, we offer energy-efficient glass options and will give you the honest comparison between repairing what you have and stepping up. Serving North Bay and communities across the area, including Rutherglen and Bonfield.

What's included

  • Full thermal assessment: glass, seals, sash fit, and weatherstripping
  • Sealed unit replacement where the thermal seal has failed
  • New weatherstripping to close air leaks around the sash
  • Hardware adjustment so windows close tight and square
  • Energy-efficient glass options with honest advice on value
  • A clear written estimate before any work begins

When to call us

  • Drafts you can feel near closed windows on windy days
  • Condensation between panes, or heavy frost inside the glass in winter
  • Rooms that will not hold heat despite the thermostat
  • Ice building up along the bottom edge of the sash
FAQ

Thermal Window Repair: questions we hear most.

Straight answers from the person who does the work. If yours is not here, call and we will talk it through.

What is the difference between thermal seal repair and thermal window repair?
Thermal seal repair replaces a fogged sealed glass unit. Thermal window repair is broader: we look at everything that affects the window’s insulation, including the sealed unit, weatherstripping, sash fit, and hardware, and fix whatever is letting heat escape.
My windows are drafty but not foggy. Can you still help?
Yes. Drafts without fog usually mean worn weatherstripping or a sash that is not closing tight, both of which we repair. The glass itself is often fine.
Will repairs really lower my heating costs?
A failed sealed unit or a leaky sash is a constant heat loss, and fixing it restores the insulation the window was built with. Most customers notice the difference in comfort immediately, especially in rooms that were hard to keep warm.
Do you install triple-pane glass?
We can quote energy-efficient upgrade options for your existing frames, and we will tell you honestly whether the upgrade is worth it for your situation or whether matching the original spec makes more sense.
How do I know if the problem is the glass or the frame?
That is what the inspection is for. We check the sealed unit, the seals, and how the sash sits in the frame, then explain what actually failed and what it costs to fix. The estimate is free.

Ready to fix your windows?

Free estimates, transparent pricing, and same-day service available in the North Bay core. Open Monday to Friday, 9am to 6pm.