
Local service
Thermos replacement in Dorval
Your glazier in Dorval for thermos glass replacement: we replace only the sealed unit in your existing frame — custom glass, free diagnosis, transparent pricing.
Local expert
Your thermos specialist in Dorval
Fog between the panes means the seal on your sealed unit has failed. In Dorval, the humidity of Lac Saint-Louis increases condensation on the windows of bungalows and family homes.
Good news: replacing the whole window is rarely necessary. We replace only the faulty sealed unit within the existing frame, with custom glass.
Custom glass for non-standard dimensions, free diagnosis, transparent pricing from $150.

Local context
Dorval: windows facing the lake, the wind and the sun
Dorval stretches along Lac Saint-Louis, from Lakeshore Road up to the residential streets north of Highway 20. Near the water you'll find larger, older homes; further in, post-war bungalows and cottages, along with apartment and condo buildings. Along the lake, the main façade often faces south, with wide windows designed to make the most of the view across the water.
A south-facing window looking over open water takes a beating: direct sun, winter wind sweeping across the lake and big swings between daytime and nighttime temperatures. Those cycles wear out the seal until moisture gets into the unit. For these façades we often suggest Low-E glass, which reflects part of the sun's heat, paired with argon gas. Large picture windows and patio doors get tempered glass.
Highway 20 makes it easy for us to reach any part of Dorval, from the waterfront to the streets near the airport. For a lakeside home, keep the lake side clear, since that's usually where the biggest windows are. In a condo, book the elevator if needed. A tip: if fog is blurring your lake view, don't wait it out. A thermos with a failed seal can't be repaired, and it keeps losing heat.
Areas served
- Lakeshore
- Strathmore
- Dorval Avenue
- Bouchard Boulevard
- Herron Road
Why it happens here
Dorval: why your windows fog up
South-facing façades
Low-E glass and argon for windows that catch sun off the lake all day.
Winter lake wind
A new, tightly sealed unit for thermos worn down by gusts off the water.
Picture windows
Large tempered-glass units made to the exact size of your opening.
Quick via Highway 20
Free travel anywhere in Dorval, from the lake to the streets near the airport.
Our services
Our services in Dorval
Thermos replacement
We replace the failed sealed unit inside your existing frame — no need to change the whole window.
Learn moreFoggy glass / condensation between panes
Diagnosis of permanent fogging between panes and sealed unit replacement.
Learn moreGlass & window repair
Broken or cracked glass? Fast on-site glass replacement, all sizes.
Learn moreDouble & triple glazing
Upgrade your insulation with a double or triple argon-filled sealed unit.
Learn morePatio door & French door
Sealed unit replacement for your sliding and French doors.
Learn moreCustom glass & mirrors
Custom-cut glass and mirrors for all your applications.
Learn moreCommercial glazing
Glazing solutions for shops, offices and buildings across Greater Montreal.
Learn moreNeighbouring areas
We also serve nearby areas
Simple and fast
How it works in Dorval
Call or photo
Send a photo of your foggy window or call us — we'll guide you.
Diagnosis & measurement
We measure your sealed unit and confirm the diagnosis, free of charge.
Custom fabrication
Your sealed unit is custom-made and ready within 24 to 72 hours.
Guaranteed installation
Clean installation with a written warranty included.
FAQ
Questions about Dorval
Do you serve Dorval?
Yes, we work throughout Dorval, from the lakeshore to the residential areas. Diagnosis and travel are free.
What are the timelines in Dorval?
Diagnosis is done quickly on site, then your sealed unit is custom-made within 24 to 72 hours.
Do you replace the sealed unit of bungalows?
Yes, we custom-cut glass to the exact dimensions of your windows and install it in the existing frame.
My lakefront home has large foggy picture windows. Can you replace the glass without new windows?
Yes, as long as the frame is sound. We measure the opening, have a custom sealed unit made, in tempered glass for large panes, and install it in your current frame. You keep the same window and get your clear view back.
What glass should I choose for a south-facing window in Dorval?
For a very sunny façade, double glazing with Low-E and argon is often a good fit: it limits overheating in summer and holds heat in winter. We go over the options during the assessment, which is free.

Ready for clear windows again?
Free quote, honest diagnosis and transparent pricing. Call us or request your quote now.
Request your free quote
Fast response, no obligation. The diagnosis is always free.