Quote:
Originally Posted by Lakegeezer
Many houses built in the 80's or earlier used 2x4 wood framing, so only 3" of insulation can be in the walls. From mid-80's on, most houses used 2x6 framing, and have five inches of insulation. All other things equal, that makes a big difference in how much heat escapes. Of course, today, foam insulation may be used instead of fiberglass, and provide even a tighter cage for the heat.
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Now see? This is very interesting. I didn't know about the different framing sizes. I am learning so much on this forum. Thanks everybody.