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Old 02-19-2014, 08:17 AM   #1
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Is my attic insulation adequate?


Our house is in central Nebraska. Utility bills aren't outrageous, but I wonder if I can do better. The house is about 12 years old and we're ther second owners. In the picture below, the insulation is about 6-8" deep. Any comments or recommendations?

Mike
central NE
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Old 02-19-2014, 08:21 AM   #2
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Is my attic insulation adequate?


Not enough. http://www.energystar.gov/index.cfm?...sulation_table

Need to check to see if anyone air sealed before adding the insulation that's there.
Sealing up anyplace plumbing, wiring lighting was run into the attic with spray foam will be a big help.
If someone added can lights make sure there IC and air tight fixtures. If not your going to have to add some covers.

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Last edited by joecaption; 02-19-2014 at 08:25 AM.
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Old 02-19-2014, 09:04 AM   #3
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Is my attic insulation adequate?


Thanks for the info. Any advantages to blown ("fluffy") vs. rolls of insulation?
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Old 02-19-2014, 09:07 AM   #4
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Is my attic insulation adequate?


Blown in is better and less expensive.
Lowes and Home Depot will let you use there blower if you buy 10 bags for free.
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Old 02-19-2014, 09:13 AM   #5
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Is my attic insulation adequate?


Great! I didn't know that.
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Old 02-19-2014, 09:21 AM   #6
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Is my attic insulation adequate?


Going to need two people, make sure to pick up some dust mask. One down stairs loading the other in the attic blowing.
I find it works best to have the blower sitting on a 12 X 12 tarp to reduce the clean up time. It's messy stuff to try and just rake up.
Do not cover up the area that extends out over the walls with out adding foam baffles first.
You need air flow from the soffits to the roof vents.
http://www.bing.com/images/search?q=...lectedIndex=39
I've found it easier for me if I duct taped a piece of 3" PVC pipe to the flex hose on the blower. That way I can stay in the middle and hit the sides without having to even bend over.
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Old 02-19-2014, 09:34 AM   #7
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Is my attic insulation adequate?


Thanks again. More stuff I didn't know.
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Old 02-19-2014, 09:38 PM   #8
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Is my attic insulation adequate?


Quote:
Originally Posted by joecaption View Post
Lowes and Home Depot will let you use there blower if you buy 10 bags for free.
round here, its 20 bags at HD. idk about lowes. and menards charges no matter what.
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Old 02-20-2014, 03:32 AM   #9
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Is my attic insulation adequate?


Thanks, Good to know this in advance.
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Old 02-20-2014, 03:49 AM   #10
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Is my attic insulation adequate?


When installed properly, loose-fill insulation improves the energy efficiency of a home, lowers utility bills and decreases carbon dioxide emissions...
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Old 02-20-2014, 07:29 AM   #11
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Is my attic insulation adequate?


+1

Add some more and you are good.

Air sealing is great too if you can at least get the big stuff.
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Old 02-20-2014, 08:31 AM   #12
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Is my attic insulation adequate?


Why is blown in better? Batts are batts and cannot manipulated based on installation. Blown in can by the installer, so although you have 20 inches, if there is too much air it will settle, correct?

If you need access, batts are easier too move and work, except in the case were blown in is your bottom layer.
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Old 02-20-2014, 08:35 AM   #13
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Blown in is easier to install, easier to get more uniform coverage, tends to settle into crevices more effectively and self level, etc.

Fiberglass doesn't settle and cellulose does a bit but its overall R-Value doesn't really change as a result.

You shouldn't need to be in the attic that much and I would plan on getting everything done that you want to first, then insulate.
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Old 02-20-2014, 08:42 AM   #14
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One thing that is always overlooked and the easiest to insulate and closes a huge hole, is the attic staircase. I read a report a while back that you can do all of the attic insulating correctly, but if you do nothing to the attic stairs you have left a huge void that impacts by reducing your insulations benefits by 30 percent I believe.
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Old 02-20-2014, 08:54 AM   #15
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Is my attic insulation adequate?


Your attic looks almost exactly as mine. My plan was to do the blown in this spring. Great tip Joe about adding the PVC pipe to the front.

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