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Fri, Mar 3, 06 at 17:21
| New garage doors will list the R-value of a section with many having a value of 10 or higher. This value does not measure the total R-value of the door but only the section. If a single pane garage window is added, then the R-value of the window section many be 1 or lower. These are not published figures on the vendors web sites or in their brochures (at least I could not find them). Where do you get information on a single pane versus a double pane garage window, and how really deleterious to the total R-value of a garage door are the windows? The obvious answer of not getting windows may not be an option where esthetics, convenience, and additional light is an issue. |
Follow-Up Postings:
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| I'd say not enough to worry about. Think of it this way, if the R-value of the non-window areas is 10, and the windows cover 10% of the door (which I would think is a high %, then even if the R-value of windows was close to 0, the total overall avg R-value would be 9. |
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