Service
Patio door thermos glass replacement in Montreal
Need to replace your patio door thermos? Foggy or broken glass: we replace only the sealed unit in tempered glass, without changing the door. From $400.
Understanding
Large glass surfaces, special requirements
Patio and French doors expose large glazed surfaces to the elements and temperature swings. Their sealed unit works harder than a small window's, making it more prone to seal failure over time.
When fog appears between the panes of a patio door, the diagnosis is the same as for a window: the seal has failed. The good news is that the solution is the same too — replace the sealed unit, without touching the door.
Safety
Tempered glass: an obligation, not an option
Patio doors and any glazed surface near the floor must use tempered (safety) glass. It's a building code requirement aimed at your safety: on breakage, tempered glass shatters into small, less sharp pieces instead of forming large dangerous shards.
Our patio door sealed units are systematically made of tempered glass compliant with current Quebec standards.
What it costs
$400 – $700
Depending on size and glass type. Firm price confirmed at the free diagnosis, within 24 to 72 hours.
Symptom
Fog on your patio door?
Fog between the panes
The classic sign of a broken seal, to be replaced.
Cracked or broken pane
Fast tempered glass replacement, door kept.
Draft
A loss of insulation that often justifies a new thermos.
Useful links
Learn more
FAQ
Frequently asked questions
Do I need to replace the whole patio door if the glass is foggy?
No. In the vast majority of cases, only the patio door's thermos (sealed unit) needs replacing. The door itself, its rails and hardware stay in place. It's far more economical than a new door.
Why does patio door glass need to be tempered?
Large glazed surfaces at floor level are subject to a safety standard: the glass must be tempered. On breakage, it shatters into small, less sharp pieces instead of forming large dangerous shards.
How much does patio door glass replacement cost?
Generally between $400 and $700 depending on the size and glass type. The firm price is confirmed at the free diagnosis. See our Pricing page for a more detailed breakdown.
How long does it take?
Diagnosis and measurement are done quickly on site, then the unit is custom-made within 24 to 72 hours. Installation is clean and fast, without removing your door.
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.