Triple pane windows r value windows#
Another feature in vinyl triple pane windows that contributes to reduced sound transmission, is the use of an Insulating Glass Unit between glazings. Because of the extra pane of glass, triple pane windows are naturally more soundproof. Yet many customers with new vinyl windows feel their new windows aren’t as soundproof as their old ones. One thing ENERGY STAR ratings don’t take into consideration is how well the windows prevent sound transmission. That means that an additional coat of Low-E on a triple pane window improves the ER rating from 34 to 38 and on an overall basis, a triple pane window with 2 Low-E 180 coatings vs double pane window with one coat of Low-E 180 has a 35% improvement in ER rating. the same window with 2 coats of Low-E translates into 12% improvement in ER rating.įor example, if we take a double pane Ecoline casement window with 1 coat of Low-E 180 it has an ER rating of 28 (zone AB) vs triple pane window with 2 layers of Low-E has an ER rating of 38 (zone ABCD). Extra Pane of Glass means more Low-Eįor better home efficiency, triple pane glazed windows offer an option to add an extra layer of Low-E due to the additional pane of glass.Ī triple pane window with 1 coat of Low-E vs. This means an additional pane of glass with 2 chambers filled with argon gas improves the window ER rating by 20%. Here is a real life example on an Ecoline window:Ī double pane window with 1 coat of Low-E 180 has an ER rating of 28, on the other hand, a triple pane window with the same configuration has an ER rating of 34. That significantly contributes to a higher energy efficiency performance. Triple Pane Windows have more gas fillīecause triple-pane windows feature two chambers, both can be filled with argon or krypton gas. Here are five reasons triple-pane windows are a better choice than double-pane: 1. Both gases conduct up to 50% less heat than air. Low-E Coating: Think of Low-E coating as invisible insulation. Low-E coated glass helps keep your home warm and cozy by blocking heat loss through windows while allowing the sun’s heat in. Low-E coating also blocks the sun’s harmful UV rays in the summer, keeping your furniture from fading, while keeping temperatures balanced.Īrgon or Krypton Gas: Argon or Krypton Gases are utilized to fill the space between the panes. Windows that meet the minimum ER ratings for their respective zones are considered to be efficient. ENERGY STAR has specific requirements for different climate zones in Canada.
A cross-section demonstrates the insides of a triple pane window.Īll windows in Canada can be compared by their Energy R ating (ER): A window’s ER rating is a measure of its overall performance, based on three factors:Ģ) heat loss through frames, insulating glass unit, and glassģ) air leakage heat loss. In this post, we will outline the benefits of triple pane glass for the window replacement market. Even then, it is impossible to make double-pane windows efficient in some climate areas in the country, without additional features to improve their performance.
When companies speak about windows, they usually refer to the number of panes of glass in the window unit: single glazed means one pane double-glazed – two panes triple-glazed – three panes.įor harsh Canadian climates, it is recommended that all windows should be at least double-glazed. One of the most commonly asked questions we receive is about the benefits of triple-pane windows.
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