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re: insulation,caulking and weatherstripping
12 jun 1998
wrote:
>i'm a nut about insulation, caulk and weatherstripping... i can always
>find a place that needs caulking even though the house is <10 years old.
a large window exhaust fan can help find places to caulk on a cool day.
>new does not equal tight [things shift, dry, expand, crack]. and,
>i believe that a yearly inspection and good caulking can save lots
>on heating and cooling bills.
new does equal more insulation, houses with r-19 walls and so on. a
32x32x16' house with walls with average r-value rv has equal thermal
conductance and air infiltration losses at one air exchange per hour
(fairly airtight) when rv = 15. more wall insulation than that, and
more than half of the fuel bill comes from air leaks. and caulking
is cheap, although labor intensive, compared to more insulation.
nick
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