Improving energy efficiency in crawl space.

Old 05-10-15, 10:56 AM
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Join Date: Mar 2002
Location: Iowa
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Improving energy efficiency in crawl space.

I have a bit of an old, but unusual crawl space It has a dirt floor covered in heavy poly sheeting, The concrete block walls are mostly insulated
with old (circa 1970/1980) fiberglass type roll material. All the house water lines and sewer lines run thru this space, none are insulated. At the crawl
space ceiling (floor of upper rooms, no insulation on them) the hot water heat piping with fin tube sections runs between the floor joists. There is no insulation
on any of the hot water heating piping in the crawl space. It seems to me that the uninsulated hot water piping is a huge heat loss.
Since I have to venture into this area, any ideas on what to do to improve its energy efficiency? Any comments or ideas appreciated.
Old 05-10-15, 03:41 PM
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Join Date: Jul 2008
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I would say that you are correct about the hot water heating pipes being a loss. Since they are between the joists, you could staple some Kraft Faced R 19 or even 21 insulation between the joists. That should make a difference.

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