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Old 02-01-2011, 08:56 AM   #1
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only 1/2 wall in finished basement is insulated


I just got my basement finished and only 1/2 (the upper half) of the basement walls have blanket insulation. The contractor said that it was not necessary to insulate the bottom half and has finished the basement. Is that true?
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Old 02-01-2011, 09:49 AM   #2
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only 1/2 wall in finished basement is insulated


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I just got my basement finished and only 1/2 (the upper half) of the basement walls have blanket insulation. The contractor said that it was not necessary to insulate the bottom half and has finished the basement. Is that true?
I think it's stupid not to insulate the whole wall.
Wasn't this detail written up in the job specifications?
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Old 02-01-2011, 10:24 AM   #3
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only 1/2 wall in finished basement is insulated


May want to read this before you let them off the hook for doing the insulation like that:

http://www.buildingscience.com/docum...ate%20basement
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Old 02-01-2011, 12:38 PM   #4
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only 1/2 wall in finished basement is insulated


i did ask the contractor about insulating the bottom before we started, but since he said that he has been finishing basements for the past 20 years, and mine did not require insulation at the bottom, I believed him. I am an absolute novice at this. How will this affect my basement? My home is 17 years old, I had 2 cracks in the basement which I fixed (got it professionally done - Crack Doctor did a great job) and besides that I have never had any moisture or any other problems in the basement. Every summer I run my de-humidifier in the basement and things seemed to be working fine. I just dont want to end up with mould and stuff like that. What is the likeliness of that happening? I live in Canada
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Old 02-01-2011, 01:20 PM   #5
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only 1/2 wall in finished basement is insulated


It's consistent with code in Ontario (dunno about rest of Province) but it is the bare minimum. See here for Ontario specific info about "best practice standards" http://www.mah.gov.on.ca/Page8819.aspx but bear in mind that this code is only for *new construction* so he can do it halfway up on your existing house I believe.

The old rules were based on the idea that ground temperature is constant a certain distance below grade, thus theoretically the basement walls will be a constant temperature too. Of course there are a number of problems with this as noted by the (really good) link that DownRiverGuy posted above.


On the other hand, if that's what he contracted to do, and it's already done, I'd leave it in place and just check it maybe once a year to be sure there's no mold growth?
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Old 02-01-2011, 01:29 PM   #6
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only 1/2 wall in finished basement is insulated


You didn't post your location. That could make a difference.
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Old 02-01-2011, 09:24 PM   #7
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only 1/2 wall in finished basement is insulated


I live in Canada
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Old 02-01-2011, 09:36 PM   #8
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only 1/2 wall in finished basement is insulated


http://www.quadlock.com/technical_li...Insulation.pdf

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