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Old 11-04-2012, 09:55 PM   #1
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testing insulation ?


since blowing cellulose in my attic. i am wondering just how effective it is.
i am thinking that i could put a piece of paper on the cellulose, pressing it down slightly. then check the temp on the ceiling. then check the temp on that piece of paper. and the temp in the attic.

example :
ceiling 72*
piece of paper 35*
attic temp 30*
=
not bad, but need more cellulose.

am i loosing it

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Old 11-04-2012, 11:09 PM   #2
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testing insulation ?


Your way over thinking this.
http://www.energystar.gov/index.cfm?...sulation_table

And you test would be useless.

Did you air seal before the insulation?
Both in the attic and under the house?

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Old 11-04-2012, 11:30 PM   #3
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Your way over thinking this.
http://www.energystar.gov/index.cfm?...sulation_table

And you test would be useless.

Did you air seal before the insulation?
Both in the attic and under the house?
yeah, perhaps. i think i am going to try it anyway.

how is that ?

sure, in that area.
the basement. thats a different story, but i'm working on it.
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Old 11-05-2012, 06:11 AM   #4
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testing insulation ?


Or you could check your energy bill.

Hydro One..here in Ontario has a website where you can track your usage by the month, day and even hour. After I had some blown in installed, the difference was immediate and dramatic.
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Old 11-05-2012, 09:41 PM   #5
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testing insulation ?


my bill isn't high. but we are just getting cold here. this months bill will tell a lot.

i will see what my ideal yields and report back.
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Old 11-06-2012, 09:17 PM   #6
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Originally Posted by Fix'n it View Post
am i loosing it
Yes...actually it may already be gone.

You are a DIYing nut.
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Old 11-06-2012, 09:42 PM   #7
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yeah. and they said EDISON was a nut.
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Old 11-06-2012, 09:45 PM   #8
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yeah. and they said EDISON was a nut.
Most geniuses are fringe.

FYI...I was paying you a compliment.
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Old 11-06-2012, 10:59 PM   #9
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Food for thought: http://www.greenbuildingadvisor.com/...cience-podcast

How much is enough for the returns; http://www.enersavesystems.com/pdf/E...Insulation.pdf

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Old 11-07-2012, 12:56 AM   #10
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testing insulation ?


I would agree that 10" of a well installed insulation is pretty ideal.

The reality is that cellulose will compress overtime and while its R-Value will slightly increase, the net installed height will go down.

Take into account also that most installers do not get a perfect and uniform thickness. Shooting for a slightly higher number ensures that you have that minimum amount required.
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Old 11-07-2012, 10:53 PM   #11
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Quote:
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Take into account also that most installers do not get a perfect and uniform thickness. Shooting for a slightly higher number ensures that you have that minimum amount required.
i agree. idk if it is even possible to get a near perfectly flat layer. i know mine is not. i plan to add some more one day.

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