Thermal Resistance of Vinyl Replacement Windows

Answered by Brendan ~ October 13, 2010 ~ 1 Comments » | Respond to this question

We have lots of days over 100 degrees here in Las Cruces, New Mexico. I'm afraid vinyl window replacements would warp or sag from the heat. Would aluminum window replacements be a better choice, or are my fears about vinyl unfounded?

Larry L. ~ Las Cruces, New Mexico

Brendan Fowler

Let me start by saying that your fears are totally unfounded. Vinyl is a fine choice in hot climates. What you should concern yourself with is the thermal ratings on the windows you are interested in. In hot climates with lots of solar exposure you will want to pay close attention to the SHGC(solar heat gain coefficient) and Low-E ratings. All window suppliers will be able to provide expert counsel in window ratings which can be a bit confusing at times.

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