
Local service
Thermos replacement in Montréal-Nord
Your glazier in Montréal-Nord 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 Montréal-Nord
Fog between the panes means the seal on your sealed unit has failed. In Montréal-Nord, the sealed units of plexes, bungalows and buildings built throughout the 20th century are often at end of life.
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
Montréal-Nord: sealed units for plexes, duplexes and riverside homes
Montréal-Nord is mostly duplexes, triplexes and small rental buildings, often with outdoor staircases and stacked balconies, broken up by streets of bungalows. Along Gouin Boulevard, facing the Rivière des Prairies, the area opens up, with single-family houses and a few apartment buildings. Horizontal sliding windows and glass balcony doors are very common here, from the ground floor to the top floor.
Balcony doors and sliders get opened every day, and the repeated movement and small knocks weaken the sealant, especially on original units. Near the river, damp spring and fall air adds to the stress on the seals. When fog stays trapped between the panes, we replace the unit: tempered glass for doors, double glazing with argon or triple glazing for windows.
Own a duplex or triplex? Start by going through each unit and noting the floor and room for every foggy window, so the quote is more accurate. Upper-floor units are often reached from inside, which means getting your tenants' agreement. On main roads like Henri-Bourassa or Pie-IX, parking is easier on a side street, so let us know the best option.
Areas served
- Riverside (Gouin Boulevard)
- Henri-Bourassa area
- Pie-IX corridor
- Lacordaire area
- Nord-Est
Why it happens here
Montréal-Nord: why your windows fog up
Duplexes and triplexes
Dense rental housing: one free assessment for every window in the plex.
Balcony doors
Opened daily, they wear out fast: tempered-glass replacement unit.
Horizontal sliders
The sliding sash gets a new sealed unit, frame and track kept.
Rivière des Prairies
Near Gouin Boulevard, damp air puts extra strain on sealed units.
Our services
Our services in Montréal-Nord
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 Montréal-Nord
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 Montréal-Nord
Do you serve Montréal-Nord?
Yes, we work throughout Montréal-Nord, from Henri-Bourassa Boulevard to the residential areas. Diagnosis and travel are free.
What are the timelines in Montréal-Nord?
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 houses?
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 Montréal-Nord triplex. How do I organize the replacement?
List the foggy windows unit by unit, then ask for one overall quote. After custom fabrication within 24 to 72 hours, we schedule installation around the access you've arranged with your tenants.
The balcony door in my unit is foggy. Do I need a whole new door?
Not if the door and its frame are in good shape. We replace only the sealed unit with a custom tempered-glass unit. The free assessment lets us check the frame before giving you a price.

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.