Acoustic insulation, such as double glazing, is used to reduce the nuisance caused by outside noise. Acoustic insulation works by reducing a sound wave’s energy.

Australian Standard covering “Construction of buildings in bushfire-prone areas.“ Incorporates Bushfire Alert Level Ratings (BAL)

An angled combination of three windows that project out from the wall of the home. The windows are commonly joined at 30- or 45-degree angles.

The accumulation of water vapours or droplets is the result of warm, moist air coming in contact with a cold surface and cooling to its dew point temperature. Condensation may occur when a cold window glass or frame is exposed to humid indoor air. Low-conductivity, insulated glass and warm-edge spacers reduce condensation. Read more about condensation.

A window that has two operable sashes which slides vertically.

A particular design of swing door, all or a large part consisting of divided glass panes. More information on door opening styles is available here.

Two or more plates of glass separated by a spacer and hermetically sealed at the glass edges.

A horizontal framing member placed across the top of the rough opening of a window or door opening to prevent the weight of the wall or roof from resting on the window frame.

A vertical or horizontal connecting unit between two or more windows.

A glass door that slides open and closes on adjustable tandem rollers. Available in 2- or 3-lite configurations with the operable panel available in any position.

The horizontal, bottom section of the main frame.

A window in which the sash move horizontally. Sliders are available in a 2- or 3-lite configuration, with the 3-lite having operable end vents

Material placed between two or more pieces of glass in order to maintain a uniform width between the glass, and prevent sealant distortion.

Glazing that incorporates three panes of glass, enclosing two separate air spaces.

Vinyl Council of Australia. View the website

Australia’s Window Energy Rating Scheme

The space in the cavity between two panes of glass in an insulated glass unit.

Australian Glass and Window Association. View the AGWA website here.

A space which protrudes from the roof, usually including one or more windows.

An architectural term referring to the arrangement of windows in a wall.

A pliable, flexible continuous strip of material used to affect a watertight seal between a sash and frame much like the seal around a refrigerator door.

Vertical sections of the main frame.

Glass with a transparent metallic oxide coating applied onto or into a glass surface. The coating allows short-wave energy to pass through but reflects long-wave infrared energy which improves the U-value.

Glass that has been made translucent instead of transparent.

A strengthened or reinforced glass that is less subject to breakage or splintering, such as glass for storm doors and some windows

A window in which one sash slides vertically and the other sash is fixed.

The sill of the window that has a downward slope to the outside. This sill has sufficient degree of slope to aid in water runoff.

Glass with a surface compression of not less than 10,000 psi, or an edge compression of not less than 9,700 psi. When broken, the glass breaks into pebbles instead of shards

UPVC Window Alliance. View the website.

The percentage of light that is transmitted through glass in the visible light spectrum (380 to 720 nanometers). The higher the number the higher the percentage of visible light transmitted through the window.