CANATEK HOME IMPROVEMENT LTD CANATEK HOME IMPROVEMENT LTD CANATEK HOME IMPROVEMENT LTD
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Address
33 Wallenberg Drive,
Vaughan, ON
L6A 4M1
Tel:
416-704-8649
 
Glossary
Making Window Terms Clear
 
Daylight Transmittance: Measures the amount of visible light that is transmitted through the glass.
 
Fenestration: An architectural term referring to the arrangement of windows in a wall. From the Latin word "fenestra" means Window.
 
Frame: The enclosure in which window sashes or door panels are mounted.
 
Glazing: The act or process of fitting a window or door with glass.
 
Insulating glass (IG): A combination of two or more panes of glass with hermetically seated air space between. The space may be filled with an inert gas, such as argon.
 
Low-Emissivity (Low-E) Glass:  A special type of glass having a microscopically thin metallic layer fused into its surface that acts as a thermal mirror.
 



In summer, Low-E glass lets in visible sunlight while minimizing infrared and ultraviolet solar energy that can increase cooling costs and cause curtains, carpets and furniture to fade.
   


In the winter, Low-E glass helps reduce heating costs by reflecting indoor heat back into the room.
 
R-Value: Represents a material’s resistance to heat flow and its ability to insulate. The higher the R-Value, the better insulation performance.
 
Sash: A single assembly of stiles and rails made into a frame for holding glass.
 
Stile: The main vertical members of the framework of a sash.
 
U-Factor (also referred to as U-Value): The rate of heat flow through a glazing system.
The lower the value, the better the insulating quality. U-Value can be compared to R-Value by dividing 1 by the U-Value. For example, a U-Value of 0.5 equals an R-Value of 2.
 
UV Block: Measures the amount of damaging ultraviolet light that is blocked from being transmitted through the glass.