Hung Windows

This is one of the most traditional windows in Canada. If you have a heritage house and would like to maintain its characteristics, you are probably going to buy this type of window. It works very well in tall and narrow window openings. Traditional window style combined with modern technology does amazing things from ease of use and efficiency of your house.

Our hung windows come with the option of sliding the bottom part up or the top part down. Also, all operable window sashes flip open inside the house for easy cleaning. Stainless steel spiral hardware makes it easy to slide the sash up/down and will support the sash at any height.

 Hung Windows Double Pane 4mm Glass Double Pane 4mm Glass Double Pane 4mm Glass
Glass 1 coating Low-E 180 Low-E 272 Low-E 366
Glass 2 coating Clear Clear Clear
Gas Filled Argon Argon Argon
U-factor metric 1.60 1.61 1.57
U-factor Imperial 0.28 0.28 0.28
R-Value 3.55 3.53 3.62
Solar Heat Gain 0.52 0.38 0.30
Air Leakage 0.3 0.3 0.3
ER ratings 34 26 22


  • Slides from the bottom up or from the top down
  • Stainless Steel hardware allows easy operation and weight distribution
  • Tilts into the house for easy cleaning
  • Interlocking sashes prevent drafting
  • Ideal for taller and narrower window openings


Windows, skylights and doors are not generally assigned with an R-value when they are being tested. Nevertheless, window salespeople and contractors may often refer to an R-value for measuring the window performance. R-value serves as a measure of the resistance to flow of heat. In order to understand this R-value system in a better way, you can sample U-factors in metric as well as imperial units that have been perfectly converted to the R-values in this following table. Since the ER values are actually derived from a mathematical formula that makes use of U-factor as well as solar heat gain, there’s no method for directly converting the ER value into an R-value.

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