Glossary |
Glossary of terms for windows, doors, and more.
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All| There are 26 entries in the glossary. |
| Pages: 1 |
| Astragal | The center member of a double door, which is attached to the fixed or inactive door panel.
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| Bay window | A composite of three or more windows, usually made up of a large center unit and two flanking units at 30, 45, or 90 degree angles to the wall.
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| Bow window |
A composite of four or more window units in a radial or bow formation.
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| Brick-mould | Outside casing to cover jamb, insulation, and the nail-fin of an installed window.
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| Casing | Inside casing is a flat, decorative moulding that covers the inside edge of the jambs and rough openings between the window unit and the wall. Outside casing (or brick-mould) serves the same purpose.
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| Double-Hung | A window with two vertical operating sash that move up and down. Traditionally the sashes are able to be unlocked and leaned out for easy cleaning.
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| Egress window | A window large enough, as defined by local building codes, for exit or entry in case of an emergency. Typically required in bedrooms.
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| Finger-jointing | A means of joining individual pieces of wood together to form longer lengths. The ends of the pieces are machined to form a set interlocking fingers, which are then coated with adhesive and meshed together under pressure.
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| Fixed | Non-venting or non operable. Also known as a "picture" window.
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| Flashing | A metal or plastic strip attached to the outside of the head or side jambs to provide a weather barrier, preventing leakage between the frame and the wall.
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| French door | A hinged door(s) which have wider panel members around the glass.
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| French Rail | A sliding door which has wider panel members around the glass, giving the appearance of a French door.
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| Glazing | The glass panes (or lights) in the sash of a window. Also the act of installing lights of glass in the window sash.
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| Head | The main horizontal member forming the top of the window or door frame.
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| Head board |
A flat board cut to fit the contour of a bow or bay window and installed between the head jambs and the flat wall surface to finish off that area which would normally be ceiling.
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| Header | A heavy beam extended across the top of the rough opening to prevent the weight or wall of roof from resting on the window frame.
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| Jack stud | Framing members, generally 2"x4"s, which form the inside of the window or door rough opening. They run from the sole plate to the header, which is supported by them.
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| Jamb liner | Metal or plastic covering the inside surface and head jambs of sliding windows.
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| Low-E |
Low-emissivity (Low-E) coatings are microscopically thin, virtually
invisible, metal or metallic oxide layers deposited on a window or
skylight glazing surface primarily to reduce the U-factor by
suppressing radiative heat flow. The principal mechanism of heat
transfer in multilayer glazing is thermal radiation from warm surfaces
to cooler surfaces.
Coating a glass surface with a
low-emittance material reflects a significant amount of this radiant
heat, thus lowering the total heat flow through the window. Low-E
coatings are transparent to visible light, and opaque to infrared
radiation. Different types of Low-E coatings have been designed to
allow for high solar gain, moderate solar gain, or low solar gain.
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| Molding | An ornamental exterior trim around the perimeter of a frame.
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| Operator |
A metal arm and gear which allows for easy operation or closing or projecting windows.
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| Picture frame casing | The use of a casing on all four sides of the interior of a window, replacing the stool and apron at the sill. Also know as the full-bound casing.
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| Rails | The horizontal members of a window sash or door panel.
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| Rough opening | The opening left in a frame wall to receive a window or door unit.
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| Sash balance | A system of weights, cords and/or coiled springs which assist in raising double-hung, and single-hung, sash and tend to keep the sash in any placed position by counterbalancing the weight of the sash.
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| Sash cord |
In double and single-hung windows, the rope or chain that attaches the sash to the counter balance.
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Glossary V2.0 |
