Choosing Windows
Window Types

Make function work for you

If you're replacing your windows, this is your chance to optimise every room for performance, usability, and value, not just appearance. Before you request a quote, walk through your home and ask: Does this window type really make sense here?

Rethink before you replace

• Not using a window for ventilation? Replace it with a picture window—more efficient and less expensive.
• Outdoor deck in the way? Swap outward-opening casements with sliders or hung windows to preserve movement space.
• Hard-to-reach locations? Consider crank-operated awning windows for easier operation and better ventilation.

Understanding common window types

Picture Window

Fixed non-operational windows that provide unobstructed views. They can be singular or combined with other types for ventilation or enhanced design. They can also be used as transoms over doors. Picture windows are the most flexible in size and the most energy-efficient window type.

Ventilation

None

Energy Efficiency

Excellent

Ease of Use

Excellent

Security

Excellent

Ideal Use Cases

Living rooms, stairwells, and feature areas

Relative Cost

Low

Fixed Custom

Also known as architectural windows, these are picture windows cut into custom shapes like circles, octagons, or angles. They add decorative flair and can fit unusual spaces while maintaining excellent energy efficiency.

Ventilation

None

Energy Efficiency

Excellent

Ease of Use

Excellent

Security

Excellent

Ideal Use Cases

Decorative/high spaces

Relative Cost

Medium

Casement

The most common operational window, casements open outward with a crank, providing excellent ventilation and tight weather seals. Available with various crank handle styles for convenience and aesthetics.

Ventilation

Very Good

Energy Efficiency

Excellent

Ease of Use

Very Good

Security

Excellent

Ideal Use Cases

Bedrooms, main living areas

Relative Cost

High

Awning

Hinged at the top and opening outward, awning windows provide excellent ventilation even during rain. Ideal for hard-to-reach spots such as kitchens and basements.

Ventilation

Good

Energy Efficiency

Very Good

Ease of Use

Excellent

Security

Good

Ideal Use Cases

Kitchens, basements, bathrooms

Relative Cost

High

Slider

Sliding horizontally like patio doors, slider windows are perfect where vertical space is limited. They provide good ventilation and do not obstruct exterior areas.

Ventilation

Good

Energy Efficiency

Moderate

Ease of Use

Very Good

Security

Good

Ideal Use Cases

Basements, tight exterior clearances

Relative Cost

Medium

Single/Double Hung

Hung windows open vertically, with single-hung allowing the bottom sash to move, and double-hung allowing both sashes to operate and tilt for easy cleaning. Classic and versatile.

Ventilation

Good

Energy Efficiency

Good

Ease of Use

Good

Security

Good

Ideal Use Cases

Traditional homes, patios, walkways

Relative Cost

Medium

Bay Window

A three-sided projection combining different window types, bay windows add floor space and can serve as seating or storage areas. More economical than bow windows and common in newer homes.

Ventilation

Depends on configuration

Energy Efficiency

Depends on configuration

Ease of Use

Depends on configuration

Security

Depends on configuration

Ideal Use Cases

Traditional homes, home front & backs

Relative Cost

High

Bow Window

Similar to bay windows but with four to six window sections forming a curve, bow windows provide elegant architectural appeal. Usually made up of picture and casement windows, often suited for Victorian or older-style homes.

Energy Efficiency

Depends on configuration

Ease of Use

Depends on configuration

Security

Depends on configuration

Ideal Use Cases

Traditional homes, home front & backs

Relative Cost

Very High

Tip: When evaluating window types, think holistically about how each one interacts with your home’s architecture, energy performance goals, and intended use of space. For instance, bay and bow windows can add dimension and passive solar gain, but may not suit smaller rooms or shaded exposures. On the other hand, picture windows maximise views and insulation but limit ventilation. Choosing the right window type isn't just about functionality, it's about optimising how your home lives and performs as a whole.

Summary:

Choosing the right window type means balancing function, style, energy efficiency, and budget. Each option has strengths that suit different needs, so take the time to assess what works best for your home.