The edge of the glazing leg surface, which allows maximum light penetration [top]

Debridging is the process whereby the aluminium bridge web connecting the exterior and interior portions of the extruded thermal break cavity is removed either by milling or sawing after the polyurethane has cured. Skip Debridging is the process whereby the bridge web is intermittently removed in 18" portions with a portion (skip) 2" long of bridge web left between each milled 18" portion. [top]

A product containing a fault which is responsible for the product not conforming to quality standards. [top]

The measure of movement of a member from its static position when subjected to loads. [top]

Channel installed at the head of the opening to provide seismic deflection as well as secure the top portion of the frame to the rough opening. [top]

The extruded aluminium retainer clip designed to couple with a corresponding Deflection Channel to hold an installed frame in place. (Also Deflection Stop, Retainer Clip) [top]

A material used to absorb moisture from within the sealed airspace of an insulated glass unit. [top]

A measurement of the structural performance of a window or door. Usually specified as one and a half times greater than necessary based on expected building wind and weather conditions.  [top]

Divided lites are separately framed pieces or panes of glass within one window frame. A double-hung window, for instance, often has several lites divided by muntins in each sash. These designs are often referred to as six-over-six, eight-over-one, etc., to indicate the number of lites in each sash. Designs simulating the appearance of separately framed panes of glass are often referred to as SDL's or simulated divided lites. Designs using actual separated pieces of glass are sometimes referred to as TDL's or True Divided Lites. [top]

The clear opening is the measured clearance from the jamb stile of the door leaf to the jamb stile of the frame when the leaf is open. [top]

The door leaf is the pivoting or swinging portion of a door system. It is sometimes referred to as a door slab or door vent. [top]

The opening dimension of a doorway is measured from the inside of jambs and from floor line to underside of frame header. The opening size is usually the nominal door size and is equal to the actual door size plus clearances and threshold height. [top]

The actual width and height of the swing door leaf. [top]

The door threshold is the extruded member that lies at the bottom of a sliding door or swing door; the sill of a doorway. [top]

A dormer is a part of the roof that is projected out at right angles to the main roof that has its own gable, typically containing one or more windows at the face of the extension. [top]

Double glazing is the use of two panes of glass in a window to increase energy efficiency and provide other performance benefits, preferably as a sealed unit. [top]

A double glazing panel is a removable interior glass panel which creates an air space between the exterior glazing and itself. It provides improved insulation and condensation control and allows for between-glass shading options such as muntins, blinds and pleated shades.  [top]

A window unit that has two operable sashes which move vertically in the frame. [top]

A swing door frame consisting of two swing door leaves separated by an astragal. [top]

Glass between 0.115 and .133 inches thick. [top]

The system designed in a window frame that allows water formed inside the frame due to condensation, or penetration from the exterior of the building to drain to the bottom of the frame and out the weep holes. [top]

See Window Shop Drawings. [top]

A moulding placed on the top of the head brick mould or casing of a window frame to divert water away from the unit below. [top]

A method of securing glass in a frame that uses pre-formed resilient gaskets instead of a wet sealant or glazing compound. [top]

A material that has two or more levels of flexibility or hardness. [top]

Refers to sealed units manufactured with a primary and secondary seal for longer sealed unit life. [top]

An instrument with a blunt probe used to measure the hardness of elastomeric glazing gaskets and setting blocks on a scale of 0 to 100. [top]