Argon Gas – a motionless gas. It is used for thermal insulation in energy efficient windows, where it fills the space between the panes of glass and is 40% denser than air.

Awning Window – a window that opens from bottom outward by cranking a handle. When opened it provides ventilation and acts as an awning to keep rain out.

Bay Window – window that consists of three windows and often protrude from the exterior wall of a home at 30- or 45-degree angles.

Bolt – A (nearly always) metal shaft usually internal to the door, attached by cleats or a specific form of bracket, that slides into the jamb to fasten a door.

Bow Window – a window that consists of 4 or 5 separate windows creating a curved shape.

Brick Mould – is used as exterior door and window casings. They are thick mouldings that allow bricks or other surfaces to butt up against the moulding.

Cam Action Locking System – is a type of latch. It consists of a base and a cam. The base is where the key or tool is used to rotate the cam, which is what does the latching. Cams can be straight or offset; offset cams often are reversible.

Capping – part of the installation process, where wood trim is capped with aluminum. It prevents water damage, rotting wood and it’s maintenance free.

Casement – a window that opens towards the left or right by cranking a handle.

Caulking – either to the caulking substance or to the process of applying it. Caulking as a term has spread to the building trade, meaning the activity of closing up joints and gaps in buildings. The function of caulking is to provide thermal insulation, control water penetration and noise mitigation.

Condensation – is the change of the physical state of aggregation (or simply state) of matter from gaseous phase into liquid phase.

Conduction – heat conduction or thermal conduction is the spontaneous transfer of thermal energy through matter, from a region of higher temperature to a region of lower temperature, and acts to equalize temperature differences. It is also described as heat energy transferred from one material to another by direct contact.

Divided Lites – lites are assembled with individual insulated glass separated by 2 1/2” mounting bars, for true historical appearance. Only available in Casement and Fixed series.

Drainage Channels – the drainage grooves formed in the inner surface of the window frame.

Energy Rating – provide a measure of a window’s overall energy performance. ER measures heat gain and loss through the window frame and the glass. A higher ER number means the window generally will lose less heat.

Energy Star – The international symbol for energy efficiency that helps consumers identify the most energy-efficient products on the market in Canada.

Frame – a structural element that holds the window in place.

Fusion-Welded – The process of joining materials by melting them together with extreme heat (in most cases over 500?F), resulting in the materials combining into a one-piece unit.

Glazing – refers to both the type of glass used in a window and the actual process of sealing the glass to the sash.

Grids – the decorative patterns on a window pane locked between the panes of glass, that helps to create the appearance of a divided window design.

Hung Window – a window with one or two sashes that operate vertically and tilt in, permitting easy exterior cleaning from inside.

Jamb – is the vertical portion of the frame onto which a door/window is secured.

Krypton Gas – serves the same purpose as argon gas. It is an inert, nontoxic gas used in insulating windows to reduce heat transfer. It’s usage is rare, since the cheaper liquid argon is typically used.

Latch – A device that allows one to fasten a door/window, but doesn’t necessarily require an external handle

Lock – A device that prevents access by those without a key or combination.

Low E Glass (low- emissivity) – a clear coating on the glass to keep heat outside during the summer and heat inside during the winter. This is a virtually invisible coating of semi-conductor or metal oxide film that is applied directly to the glass or on plastic film between the two panes.

Nailing Fin – An integral extension of a window or patio door frame forming a 90 degree angle, through which nails are driven to secure the frame in place.

Patio Door – A sliding door that’s essentially a window that people can walk through.

Picture Window (Fixed Window) – a window that doesn’t open.

Porch Enclosure – a structure consisting of a porch area that has been framed for energy-efficiency and enhanced security.

PVC – is the acronym for polyvinylchloride. It is one of the most commonly used thermoplastic polymers.

R-Value – measures a windows resistance to heat flow.

Sash – a fixed or movable framework, as in a window or door, in which panes of glass are set.

Sill – the horizontal piece or member beneath a window, door, or other opening.

Slider Window – a window that has one or two sashes move sideways. Both sashes tilt inward for easy cleaning.

Solar Heat Gain – refers to the increase in temperature in a space, object or structure that results from solar radiation. The amount of solar gain increases with the strength of the sun, and with the ability of any intervening material to transmit or resist the radiation.

Solarium – is a glass enclosed space, that is structured for enjoyment of outdoors in comfort of your home.

Spacer – material along the perimeter of the sash that seals the glazing unit, placed between two or more peaces of glass.

Tempered Glass – glass with a surface compression or that has been heat-treated to a high surface. It is heat strengthened for safety purposes, since when brakes – shatters into small pebble-like pieces with no sharp edges.

Thermal Insulation – materials used to reduce the rate of heat transfer, or the methods and processes used to reduce heat transfer.

uPVC (Unplasticised polyvinylchloride) – is a low maintenance material. It is used in the construction industry. It minimizes movement and developed additives that help resist the ultraviolet rays in sunlight.

U-Value – indicate how well a window keeps heat in your home. A low U-value means less heat is transferred through the window.

Vinyl Package – frame with brick mold nailing fin, vinyl jamb and vinyl casing with corner rosette.

Weather Stripping – A strip of resilient material for covering the joint between the window sash and frame for added insulation value.