What is “R-Value?”

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Hi there,

I’ve been doing some looking around for new garage doors to replace the one I have now on my unattached garage unit. While I was looking at the doors my installer mentioned there is an “R-value” for each door and type. What is this value and how should I apply it when I am finding the best door for my garage?


Frank Jennings
By Frank Jennings
On 15-03-2015


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