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Old 01-14-2017, 10:49 AM   #1
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Insulating between 1st story and 2nd story.


Hello all,

I bought a house last year with a built out attic which now acts as a second story. During the summer I was unable to cool the 2nd story to 84 degrees. Now that is is cooler I am having problems heating. The Heat Pump system is in working order and is heating/cooling as it should. The second story is roughly 1000 sq feet.

I was finally able to find a way into the second part of the attic. This revealed that there is no insulation between the 1st and 2nd story. At this point I do not have access to use roll insulation all the way around the outside of the 2nd story build out. My thoughts so far are ripping up the carper/tile, removing plywood closest to the exterior walls, blowing in insulation to create a barrier. Pictures are worth a 1000 words, so I have three. This shows the 1st story on the bottom and the 2nd story plywood from an attic view.


I am looking for ideas on the most efficient and cost effective way to resolve this?
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Insulating between 1st story and 2nd story.-attic1.jpg   Insulating between 1st story and 2nd story.-attic2.jpg   Insulating between 1st story and 2nd story.-attic3.jpg  
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Old 01-14-2017, 10:59 AM   #2
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Re: Insulating between 1st story and 2nd story.


Hi spike and welcome to the forum.
Sorry but I'm having trouble seeing how the house is constructed and where those pictures fit in. A picture or two from the outside might help.

Normally you wouldn't insulate between floors, just the perimeter and the top.

Those cavities look huge, but blown in insulation, we often see cellulose over here, is an option. For the best way to get it in there you could ask for a couple of quotes. That discussion will also tell you how they plan to install it.

More pictures?

Bud
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Old 01-14-2017, 11:08 AM   #3
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Re: Insulating between 1st story and 2nd story.


It sounds like your HVAC system needs to be evaluated. I don't think insulation is the answer and may actually cause more problems.
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Old 01-14-2017, 09:27 PM   #4
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Re: Insulating between 1st story and 2nd story.


Thank you both for the responses. At this point I will try to seal off the perimeter, and I am going to a schedule a visit from the home warranty company while I still can. Perhaps both are a contribution to this problem.
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Old 01-15-2017, 09:25 AM   #5
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Re: Insulating between 1st story and 2nd story.


I'll be surprised if the Home Warranty company does anything for you on this one.
Is there any return air vents on the second floor?
Far more often than not A DIY attic conversion will be done wrong.
Almost always the insulation and duct routing leaves a lot to be desired.
https://www.energystar.gov/index.cfm...sulation_table
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