Gliding Windows Vs. Casement Windows

Direction of Movement

• Direction of movement is the primary difference between gliding and casement windows. While gliding windows move side-to-side within a fixed track, casement windows swing outward or inward from the fixed window frame. Homeowners typically control gliding windows by hand, pulling on a small handle or rim that protrudes from the mobile pane of the window. Some casement windows operate by pushing or pulling on sashes and others by manually turning a crank attached to the window's frame.

Space Requirements

• The direction of gliding windows' and casement windows' movement affects their space requirements. Installing gliding windows only enough space to accommodate the window's frame. Casement windows not only require enough space for the frame but also space to accommodate the outward or inward swing of the window sashes. Inward-swing casement windows are rare because they significantly limit the placement of furniture and interior window coverings, such as blinds and drapery. Additionally, exterior features, such as awnings or window planters, inhibit casement windows' movement.

Ventilation Capabilities

• The standard gliding window consists of one fixed-position sash and one mobile sash. Therefore, in a fully open position, gliding windows only expose half their frames. On the other hand, both single and dual-sash casement windows swing open to expose their entire frames to ventilation. Thus, casement windows offer more functionality and ventilation than gliding windows. Casement windows' increased ventilation benefits homes that rely on air-flow for summing cooling.

Appearance and Style

• Both gliding windows and casement windows frames are available in materials, including metal, vinyl and wood. Manufacturers produce both types of windows with a variety of window pane designs, including single and multiple panes. However, while casement windows blend with older, traditional architecture, gliding windows have a distinctly modern feel.

Mechanical Components

• While many casement windows open and close via a mechanical, hand-crank assemblies, gliding windows simply roll across a fixed track. Casement window cranks and gears eventually wear, deteriorate and fail. Therefore, casement windows require relatively frequent maintenance and repair. Gliding windows generally require infrequent cleaning and clearing of their tracks.