
Local service
Thermos replacement in LaSalle
Your glazier in LaSalle 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 LaSalle
Fog between the panes means the seal on your sealed unit has failed. In LaSalle, windows exposed to river humidity and the elements age faster.
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
LaSalle: rental plexes, family homes and rapids views
LaSalle has a lot of duplexes and triplexes, often shared by an owner-occupant and tenants, along with low-rise apartment buildings and areas of single-family and semi-detached homes. Along LaSalle Boulevard, facing the Lachine Rapids, condo buildings look out over the river. Sliding windows and balcony patio doors are everywhere. Most of these windows come in standard shapes, but rarely in standard sizes.
In a rental plex, the windows aren't all the same age: some were replaced during past renovations, others never. As a result, fog shows up one unit at a time. Instead of replacing everything, we redo only the failed sealed units, sized to each frame. Patio doors and large river-facing panes get tempered glass, while argon and Low-E improve insulation in exposed rooms.
Street parking is usually easy in LaSalle's residential areas, though it can be tighter near the waterfront buildings. For a rented unit, give your tenant notice as required for work in their home. A practical tip: check your windows in early fall. A unit replaced before the deep cold sets in means a warmer, more comfortable winter for you and your tenants.
Areas served
- Riverfront (LaSalle Boulevard)
- Parc des Rapides
- Newman Boulevard
- Angrignon area
- Aqueduct Canal area
Why it happens here
LaSalle: why your windows fog up
Owner-occupied plexes
We replace only the failed thermos, one unit at a time.
Condos by the rapids
Large panes and patio doors in tempered glass for river-facing façades.
Windows of every age
Each unit is measured in its own frame, whatever the window's vintage.
Before winter
A fall replacement keeps your units comfortable through the cold months.
Our services
Our services in LaSalle
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 LaSalle
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 LaSalle
Do you serve LaSalle?
Yes, we work throughout LaSalle, from LaSalle Boulevard to the Lachine Rapids. Diagnosis and travel are free.
What are the timelines in LaSalle?
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 single-family homes?
Yes, we custom-cut glass to the exact dimensions of your windows and install it in the existing frame.
I rent out the units in my LaSalle duplex. How do I organize the replacement?
Start by walking through the units with your tenants to spot the foggy windows, then give us a call. We take all the measurements during the free assessment and plan the installation with you, based on when the occupants are available.
My river-facing window is always foggy. Can it be defogged?
We don't offer defogging: once the seal has failed, we replace the sealed unit. The new one, with Low-E glass and argon if you like, is custom-made within 24 to 72 hours and installed in your frame.

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.