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Old 09-10-2010, 08:09 PM   #1
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New Insulation


So I gutted a room. My house is made of concrete blocks. From the blocks there are thin boards which the sheet rock will be screwed on. There is only a gap of 1.5 - 2 inches. Which solution is best?
1.) Getting thin insulation to best fit the space
2.) Getting a thicker insulation and smush it in there.
3.) Use some type of spray foam.

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Old 09-10-2010, 08:33 PM   #2
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Where are you located ?
Above ground ?
Thick insulation "smushed" in there you will end up w/reduced rvalue
...and fiberglass can't be up against concrete block usually
How far apart are the strips ?
I think I'd cut 2" thick rigid & install in between the strips
Then add 1/2" or 1" on top of everything & then drywall

Spray foam is also an option

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Old 09-10-2010, 08:37 PM   #3
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i am from connecticut. above ground. Strips are all diff distance apart.. 13.5 12.5 14.5 etc.

and there is only 1.5 - 2 inches inbetten where the drywall will be and where the concrete blocks are

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Old 09-10-2010, 09:55 PM   #4
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Sounds like a pretty stout house. I started to say I would go with Styrofoam but given the odd spacing of your batten boards spray in would probably be simplest.

I suppose it comes down to budget vs time.

Let us know how it come out.

Good Luck
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Old 09-11-2010, 09:27 AM   #5
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hey, you asked for the *best* solution.. that would be spray. it is waterproof, seals every nook & cranny and i think the R-value is better (could be wrong though). it will also save you time as this is not likely a DIY project (unless you know where to get spray foam from!??)

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Old 09-12-2010, 10:32 AM   #6
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i was probably going to pay to have the spray insulation in and do the rest myself with my freind. thanks for the input

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