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2. Insulated glazing - Wikipedia

   en.wikipedia.org/wiki/Insulated_glazing

   Fitting a second pane of glass to improve insulation began in Scotland, Germany, and Switzerland in the 1870s. [2] Insulating glass is an evolution from older technologies known as double-hung windows and storm windows. Traditional double-hung windows used a single pane of glass to separate the interior and exterior spaces.

3. Glazing (window) - Wikipedia

   en.wikipedia.org/wiki/Glazing_(window)

   The ideal gap size varies by location, but on average it ranges from 15-18 mm thick, giving a final assembly size of 23-26 mm assuming a typical glazing thickness of 4 mm. [9] A double-paned window with air in the gap has an R-value of 2.1, which is much better than the 0.9 that a single pane of glass yields. A triple-paned window, which is not ...

4. List of insulation materials - Wikipedia

   en.wikipedia.org/wiki/List_of_insulation_materials

   Glass [6] 2.54: 1 0.025: 0.14: 0.98 Uninsulated glass pane 0.6: 0.25 0.16: 0.91: 0.98 Insulated glass (double glazed) 1.6–1.9: 0.63–0.75 0.35: 2: 40 Insulated glass (double glazed, hard low-e) 1.6–1.9: 0.63–0.75 0.67: 3.8: 77 Insulated glass (double glazed, soft low-e) 1.6–1.9: 0.63–0.75 0.90: 5.11: 100 Insulated glass (triple ...

5. 50 Times Cheap Fixes Had A Major Impact On Home Life - AOL

   www.aol.com/55-people-share-relatively-cheap...

   Didn’t do a glass door yet though, because that put me over my budget of $1500 #49 Look at what non-windowed rooms you walk into the most and buy motion sensing light switches.

6. Window - Wikipedia

   en.wikipedia.org/wiki/Window

   The panes of glass are separated, creating an insulating air pocket that inhibits heat transfer much better than single pane windows. Double-paned windows have two parallel panes (slabs of glass) with a separation of typically about 1 cm; this space is permanently sealed and filled at the time of manufacture with dry air or other dry ...

7. Window insulation - Wikipedia

   en.wikipedia.org/wiki/Window_insulation

   Clear double glazing has a U-factor between 1.8 and 3 W/(m 2 ⋅K) or between 0.3 and 0.5 Btu/(h⋅ft 2 ⋅°F) (about R-2) Clear triple glazing has a U-factor between 0.5 and 1 W/(m 2 ⋅K) or between 0.1 and 0.2 Btu/(h⋅ft 2 ⋅°F) (about R-3). Double and triple glazing are critical for energy efficiency. Single glass windows are no longer ...