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Old 09-20-2008, 07:38 AM   #1 (permalink)
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Attic insulation

I had recently asked about using attic insulation to wrap a water heating in to keep it warmer. I know adding insulation to the attic will help lower energy costs (I did and it saved me ~$150 the first year), but is there a point at which the amount of insulation is really not adding any more R values? I had R-13 in the attic when I bought the house (very low for NJ), then I put in R-19 over that. As stated in the post about the water heater, sometimes I can get insulation at an auction, a batt or two at a time, and sometimes a little older, but is it worth adding more if I can get it cheap enough? I'm sure there is a point when adding more is just not going to help and I'm wondering what is that point?

Goal one= 30mpg on The Monte by changing the nut that connects the steering wheel to the seat.

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Old 09-26-2008, 10:40 AM   #2 (permalink)
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The standard recommendation for attic spaces is R-50. More is usually better but personally I wouldn't layer it more than two or three layers because it's a fairly good idea to inspect it every now and then for water leeks and "critters" and too much would finding a wet spot difficult, not to mention being able to safely walk the rafters when you need too.
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Old 11-28-2008, 10:33 AM   #3 (permalink)
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Check out this thread, It covers a lot of stuff


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