Window style usually describes how a window opens or how several sections are arranged. It is a separate choice from frame material, colour and the number of glass panes.

That distinction makes shopping easier. A casement window can have different glass packages and finishes, while two windows that look similar from the street may open differently inside the home.

The main opening styles

These common terms describe the basic operation. Andersen’s window glossary provides reference definitions for window components and arrangements.

• Casement: Hinged at the side and typically operated with a crank, with the opening section swinging outward.

• Awning: Hinged at the top and opening outward from the bottom.

• Sliding: Opens by moving a section horizontally along a track.

• Single-hung: Has a lower section that moves vertically and a fixed upper section.

• Double-hung: Has upper and lower sections that can move vertically.

• Picture or fixed: Does not open. It provides a view and daylight without an operating section.

The framed section that holds the glass is called the sash. You will hear that word when discussing operation, cleaning or replacement parts.

Bay, bow and combination windows

A bay projects beyond the wall using angled sections. A bow uses several sections to form a curved arrangement. Both descriptions concern the overall shape; the individual sections may be fixed or operable.

A combination window can also stay within a flat wall. For example, a fixed centre section can sit between two opening sections. Ask to see which parts move on the proposed drawing, since an exterior image may not make that obvious.

Shape and operation can overlap in other ways. An arched or specialty-shaped section does not create a universal new category of opening mechanism.

Why do guides list different numbers of window types?

Some guides count bay and bow arrangements separately, while others group them together. Some include specialty shapes, basement styles or combinations in the same list as opening mechanisms.

There is no need to choose a guide based on whether it promises four, seven or ten types. Start with the styles available for your opening and the job you need them to do.

Choose by the room and its surroundings

Walk through the room before selecting a style. Where will you stand to operate the window? Is there a counter in the way? Would an outward-opening sash extend into a walkway, deck or another obstruction?

For a view-focused room, identify the portion of the scene you want to keep clear. For a room where you regularly open the window, think about the handle, lock and screen as well as the appearance.

Ask for a demonstration of cleaning access on the specific product. Do not assume every hung window tilts inward or that every slider can be removed in the same way.

Which style is most popular?

Popularity depends on the region, house type and data being counted. A manufacturer’s best-selling style does not establish the most popular choice across Ottawa.

Use nearby homes and inspiration photographs to find a look you like, then evaluate the practical details. The most useful choice is one that works with your opening and the way you use the room.

Compare style and performance separately

Once you have shortlisted a style, compare the exact product’s glass package, ratings, dimensions and installation scope. A style name alone does not tell you its energy performance or installed price.

Ask Northline about the options for your home, with photos and a room-by-room list. Describe how you would like the windows to operate before settling on colours or decorative details.