Once you've decided it's time to replace your windows, the next question is usually some version of: what should I replace them with?

There isn't one window style or glass package that makes sense everywhere. A kitchen window has a different job from a basement window, and the big opening overlooking your backyard deserves a different conversation from the little window at the end of the hallway.

The easiest way to narrow things down is to look at how you want each room to function, then choose the window around it.

Casement, Awning & Tilt and Turn Windows

If ventilation is important, you have a few different ways to get it.

Casement windows swing outward and can open wide when you want plenty of fresh air. Their crank operation also makes them convenient in places such as above a kitchen sink, where reaching forward to push or slide a sash would be awkward.

Awning windows hinge across the top and open outward from the bottom. Their shorter proportions can work particularly well in bathrooms, basements and combination windows where you want an operable section without dedicating the entire opening to it.

Tilt & turn windows take a different approach altogether. Tilt the top inward for controlled ventilation, or swing the entire sash inward when you want a larger opening and easier access to the exterior glass for cleaning.

All three give you fresh air. The difference is how you want to use the window once it's in the room.

Sliding, Single Hung & Double Hung Windows

Sometimes the most useful window is the one that stays out of the way.

Sliding windows move horizontally within the frame, so the sash doesn't project into the room or outside the house. That can make sliders especially practical beside decks and walkways, in basements or anywhere an outward-opening window could become inconvenient.

For a more traditional vertical appearance, single hung windows use one movable sash, while double hung windows allow both sashes to operate.

These styles can work particularly well when you want straightforward ventilation without a sash swinging beyond the window opening.

Picture, Fixed, Bay & Bow Windows

Not every window needs to open.

If the backyard is something you actually enjoy looking at, a picture window can provide a larger, cleaner area of glass without operating hardware getting in the way.

Fixed windows can serve a similar purpose on their own or as part of a larger combination. A large fixed centre section with smaller casement or awning windows around it can give you the view and the ventilation without making every piece of glass operable.

For homeowners looking to change the architecture of the opening itself, bay & bow windows project outward from the home. They can introduce more glass, dimension and usable space around the window while creating a much more noticeable feature inside and out.

Double Pane or Triple Pane?

Window style determines how the window operates. The glass package determines another important part of how it performs.

Double pane windows use two panes of glass separated by an insulated space and can provide a practical balance of thermal performance and project cost.

Triple pane windows add a third pane and another insulated cavity, providing additional thermal performance that can become particularly relevant during an Ottawa winter.

But more glass doesn't automatically mean every window in the house needs triple pane.

That big living-room window beside the couch may deserve a different conversation from a small laundry-room window you barely spend time around. We'd rather look at the home room by room and put additional performance where you're actually going to benefit from it.

Egress, Privacy & Specialty Windows

Some openings have requirements that go beyond the usual conversation about ventilation and views.

Egress windows are designed around emergency-exit requirements and become particularly important when planning certain basement spaces. The size of the opening and the usable clear opening both need to be considered rather than assuming any operable basement window will qualify.

Privacy glass windows solve a completely different problem. Frosted, textured or obscured glass can bring daylight into bathrooms, entrances and exposed areas of the home without providing such a clear view through the window.

And sometimes the architecture simply calls for something other than a rectangle. Shaped windows can introduce arches, circles and other custom configurations where a conventional window wouldn't have the same effect.

The important part is that you don't need one answer for the entire house.

A casement over the kitchen sink, awning in the bathroom, slider in the basement and picture window overlooking the backyard can all be the right choice at the same time. The goal of a replacement project isn't to find the “best window.”

It's to find the right window for each opening.