Casement windows that seal tight and open wide
A casement is hinged at the side and cranks outward. When it closes, the sash is drawn against the frame and compresses the weatherstrip along all four edges, which is why a casement seals better than any sliding window.
Limited lifetime warranty, transferable · Custom-built to your opening · Family owned and operated
Where casement windows suit a home
Casements earn their place on exposed walls. On a west-facing elevation catching wind off open ground, or a north wall that takes the worst of a Central Ontario winter, the compression seal is what stops the draft you feel at ankle height. Sliders cannot match it because a sliding sash has to stay loose enough to move.
They also solve the reach problem. A crank handle at sill height opens a window you could never reach across, over a kitchen counter, behind a sofa, above a bathtub. And because the sash swings clear, both faces of the glass can be cleaned from inside the room.
Where casements do not suit: any opening where the sash would swing over a walkway, deck, patio or driveway. A casement projects most of its own width outward.
Features
- Opens to a full 93 degrees, so the outer face of the glass is reachable from inside
- Compression seal on all four edges when closed, the tightest seal of any operating style
- Multi-point hardware draws the sash evenly into the frame
- Available with Low-E glass and argon fill, ENERGY STAR qualified
- Extruded vinyl frame that will not warp, split, rot or need repainting
Models we fit
| Model | Style | Description |
|---|---|---|
| C1 | Quad-Seal casement | Opens to 93°. Unobstructed view top-to-bottom and side-to-side. |
| CL1 | Legacy casement | Opens to 93°, same clear sightline on the Legacy profile. |
How they compare
Against an awning window: both crank outward on the same hardware, but an awning hinges at the top and a casement at the side. Awnings can stay open in light rain; casements give a taller clear opening and are the better choice for egress.
Against a slider: the casement seals considerably better and gives a full-height opening, while the slider projects nothing outward and costs less. On a wide opening a slider usually wins; on a narrow, exposed one the casement does.
Against a picture window: identical glass, no ventilation. Pairing a fixed centre with casement flankers is the most common combination we build.
What is the difference between a casement window and a slider?
A casement window is hinged at the side and cranks outward, while a slider moves horizontally along a track. Casements seal tighter because the sash compresses against the frame when closed, which suits exposed walls and windy sites. Sliders cost less to operate and suit wide openings where a projecting sash would obstruct a walkway, deck or driveway.
Are ENERGY STAR windows worth it in Ontario?
Yes, ENERGY STAR qualified windows are certified to perform in Canada's climate zones, and they make the biggest difference in older homes with single-pane or failed double-pane glass. Low-E coatings and argon fill cut radiant heat loss in winter and solar gain in summer. Comfort improves immediately, particularly the cold draft near seating placed against an exterior wall.
Why is there condensation on my new windows?
Condensation on the interior glass means the indoor humidity is higher than the glass surface temperature can support, not that the window has failed. New windows seal a house far more tightly than the ones they replace, so moisture that used to escape through leaks now stays inside. Running bathroom and kitchen fans and lowering the humidistat in cold weather resolves it. Moisture sealed between the panes is a different matter and is covered.
Book your free in-home consultation
We measure every opening, talk through the options that suit your home, and give you a written quote. No pressure, no obligation.