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Replacement · Basement
Old steel basement frames rust, sweat and let the deep cold and damp into the room. We swap them for sealed vinyl hopper and slider units — Low-E glass, air-sealed with backer rod and low-expansion foam, and secured with cam locks.
Why it matters
Old basement windows are one of the biggest sources of drafts, leaks and cold in a home in Montreal, and the worst offenders are the rusted single-pane steel frames builders used for decades. Set low where snow-melt and spring runoff collect, they sweat, frost over and let damp air seep past failed glazing. We replace them with sealed vinyl hopper and slider units that keep the basement dry, warmer and secure.
Hopper units tilt in from the top for easy cleaning and ventilation, while sliders suit wider, shorter openings; both come with cam locks that are a real upgrade over the loose latches on old steel. For a bigger comfort gain across the house, ask about energy-efficient replacement or a double-pane upgrade.
Planning to finish the basement into a bedroom? Ask about egress windows — we enlarge the opening to code so the room is legal, or fit a straightforward retrofit replacement where the frame is sound.
How it works
Call, text or use the form. We book a free in-home visit — no obligation, no high-pressure sales table.
We measure every opening, check the frames and sills for rot or water damage, and walk through material, style and glass options in plain language.
Line-item quote with the window line, glass package, U-factor, warranty and haul-away on one page. Financing attached when you want it.
Drop cloths, boot covers and a full air-seal on every unit. Old windows hauled away and a walkthrough of your new windows plus warranty registration.
What you get
We flash and seal each basement window against water and air, set it with backer rod and low-expansion foam, and where needed tie it into a properly drained window well so runoff sheds away instead of pooling at the frame. Hopper and slider units come with secure cam locking, and we can spec tempered or laminated glass for a below-grade opening.
The written quote covers the window, the sealing and any drainage work as one job — one crew, one price, one warranty. If a whole-home upgrade makes more sense, we also handle full-frame replacement and energy-efficient windows, and you can browse every option under window replacement.
Related services
Other services our crews handle across Montreal.
Complete tear-out for rotted frames or sills.
Learn moreNew windows into sound existing frames.
Learn moreTriple-pane, Low-E and argon for lower bills.
Learn moreAdd or replace storm windows for winter.
Learn moreCommon questions
Hopper and slider units, security, leaks and egress.
Real Montreal reviews
Our old basement windows leaked and let in cold. The new sealed units are dry, warm and lock up secure. Great fix.
Water used to pool at the old window every spring. They re-sealed and sorted the drainage — bone dry this year.
Swapped four tired basement windows for secure, efficient ones. The basement finally feels warm enough to use.
Draft-free and much more secure than the rusty old frames. Clean, quick job.
Ready when you are
Book a free in-home measure and a written, itemized quote for basement window replacement anywhere across Montreal and the surrounding towns. Sealed against water and cold, secure, and — where you want a legal bedroom — sized to egress code, installed by our own crews. No subcontractors, no pressure.
Locally owned · Insured · ENERGY STAR® · Free written estimates