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

Local context
Lachine: between the canal, the lake and working-class plexes
Lachine is shaped by its industrial past and by water: the Lachine Canal begins here, and Saint-Joseph Boulevard follows the shore of Lac Saint-Louis. Housing reflects that history, with older homes in Old Lachine, working-class duplexes and triplexes toward Saint-Pierre, and newer condo buildings near the canal and on former industrial land. From one area to the next, the windows can be completely different.
Each building type has its own weak points. Plexes often have a mix of sliding windows and patio doors onto back balconies, replaced at different times over the years. Newer condos have large fixed panels. Along Saint-Joseph Boulevard, wind off the lake wears out seals faster on exposed façades. We match the glass to the job: tempered for doors and large panes, Low-E and argon for sunny rooms.
In plexes, upper units are often reached by an outdoor staircase, and that's the route the glass has to take for an upstairs patio door, so keep it clear of bikes and planters. Street parking is usually available in residential areas. A tip for plex owners: tell us about every affected unit at once so we can take all the measurements in a single visit.
Areas served
- Old Lachine
- Saint-Pierre
- Duff Court
- Lachine-Est
- Lakefront (Saint-Joseph Boulevard)
- Lachine Canal area
Why it happens here
Lachine: why your windows fog up
Working-class plexes
Sliders and back patio doors, often replaced at different times.
Saint-Joseph Boulevard
Lake-facing façades: new units where wind has worn the seals.
Condos near the canal
Large fixed panels rebuilt in tempered glass, made to exact size.
Outdoor staircases
A clear path is all we need to bring units up to second-floor flats.
Our services
Our services in Lachine
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 Lachine
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 Lachine
Do you serve Lachine?
Yes, we work throughout Lachine, from the historic core to the lakeshore. Diagnosis and travel are free.
What are the timelines in Lachine?
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 character homes?
Yes, we custom-cut glass to the exact dimensions of your windows and install it in the existing frame, preserving the character.
I own a triplex in Lachine. Do I need to be in every unit?
What matters is that we can get to the affected windows. Give your tenants notice and agree on a time with them. If you group all the affected units, measurements are taken in one free assessment visit.
My house faces Lac Saint-Louis. Is triple glazing a good choice?
It can be for a very wind-exposed façade, as long as the frame can take a thicker unit. If not, double glazing with argon and Low-E is still an effective option. We check compatibility during the assessment.

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.