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Glossary
Knowing the right names for parts of your window can help you avoid confusion. Read through these important window parts terms and definitions for Durabuilt windows and you’ll be set.
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Connect You
Durabuilt department responsible for communicating with customers regarding their order scheduling, shipping and service.
Dead-Air Chamber
Space between walls of vinyl extrusions used to trap air, providing insulation.
Decorative Glass
Door insert, or doorlite, using a combination of decorative glass and caming material.
Dentil Shelf
Decorative ledge installed on the exterior of the door slab on a Craftsman style door.
Dew Point
The temperature at which the air can hold no more humidity and it condenses to liquid.
Direct Glazing
Sealed unit installed into a frame as opposed to being glazed into a sash.
Door Frame
Wood, or composite, jamb parts and sill assembled to form a frame for a door slab.
Door Jamb
Sides and top of a door frame.
Doorlite
An insulating glass unit installed into a door slab.
Dormer
Space which protrudes from the roof of a house, usually including one or more windows.
Double Slider
Window with two horizontal sliding sashes that can be removed to act as a bypass window in a basement.
Drip Cap
Formed aluminum or vinyl piece component installed at the top of windows or doors that guides water shed away.
Drywall Return
U-shaped molding applied to a window to accept drywall.
Dualpane Glazing
The use of two panes of glass made into a sealed unit for a window or door.
Egress
Refers to a venting window being required by building codes for emergency escape and rescue required in bedrooms which do not have an exterior door. Canada building code egress requires a minimum square footage of the clear opening of 3.79 square feet and a minimum clear opening height and width of 15”.
Emissivity
Term used to describe a surface’s relative ability to absorb and reradiate heat. A surface with high emissivity will radiate heat faster than a surface with low emissivity. Emissivity is recorded on a scale of 0-1, where 0 would be the perfect white surface reflecting 100% of heat while 1 would be the perfect black surface that absorbs 100% of heat.
Energy Rating (ER)
A value demonstrating a window or doors balance between U-factor, SHGC and air leakage. The higher the number, the more efficient the product.
Energy Star
A voluntary partnership between the Government of Canada and industry to promote energy efficiency. For windows and doors, Canada is divided into three zones.
Fenestration
Architectural term referring to the arrangement of windows in a wall. From the Latin word, “fenestra,” meaning window.
Fixed Window
Non-venting window that has the same glass sight lines as a venting window providing a balanced appearance.
Flanker
The side windows of a straight or bow window configuration.
Flashing
Water resistant material that directs water to a drainage plane or to the exterior surface of a building.
Flush-Glazed
Insulated clear or privacy glass that is integrated into a door slab to provide a clean appearance.
Frame Dimension
The outside dimensions of a window or door frame – commonly referred as OSM frame dimension.
French Door
Double door combination with both door slabs operating with and astragal and flushbolts allowing for a wide opening.
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