Types and designs of windows

Casement windows are a very efficient type of windows. Other types of windows - horizontal sliding, double-hung, bay and bow windows...- aren't so energy-efficient in terms of air sealing...

Types of windows

There are several types of window designs, differing in their energy-efficiency and ventilation and lighting capabilities. The basic designs are mainly four...

1 - Fixed-pane windows ;
2 - Double-hung (vertical sliding) and gliding windows (horizontal sliding)
3 - Casement windows, hopper windows and awning windows (they all have a crank out, and only differ on the location of the hinges: at the side, at the bottom or at the top of the window).
4 – Bay and bow windows.

Fixed-pane windows

Example Fixed Window Fixed-pane windows are stationary windows. They don’t open, and can be customized and designed to match other types of windows, namely casement and double-hung windows.

This design is excellent for natural lighting, is inexpensive, and also the best to minimize air leaking. But since the panes are fixed and don’t open, they do not allow ventilation – a big disadvantage in many cases...

Sliding windows

Sliding windows (double-hung and gliding windows) are variations of the same frame design: a design that is more leakier than other designs.

See, for more information: Sliding and double-hung windows and Weatherstripping double-hung windows

Casement, hopper and awning windows

Casement, hopper and awning windows are variations of the same frame design, based on hinges at the side, bottom or top of the window.

Casement, hopper and awning windows can be excellent windows, with a higher energy-efficiency than that of gliding and double-hung windows. Besides, they also allow good ventilation possibilities.

See, for more information: Hopper, awning and casement windows and Weatherstripping casement windows

Bay and bow windows

Box Window: Combination of types Bow or bay windows are window combinations projected outward... This design of windows allows multiple views and is excellent for lighting and ventilation. Bow windows allow a sense of spaciousness, and they are mainly used in kitchens, though not only. But this design also reduces the structural strength of the windows and can pose other problems: more maintenance, condensation problems, air leakage, shorter lifespan...