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Old 03-29-2010, 09:00 AM   #1
dOe
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Basement Remodel


I am in the beginning stages of a basement remodel. My basement is currently an open space with poured concrete foundation,.

My question is regarding insulation. I was thinking of getting 1" - 2" foam insulation and glueing it right to the foundation walls. I figured this would help with mold and moisture from the walls that could et on the fiber glass insulation I plan on using from the framed wall.

Is the a good idea, bad idea? Will doing this negate the need for the fiberglass, or should I still use it as well.

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Old 03-29-2010, 09:09 AM   #2
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Where are you located ?

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Old 03-29-2010, 09:11 AM   #3
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Northeast, Boston
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Old 03-29-2010, 10:06 AM   #4
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I'm planning on 1/2" rigid up against the concrete
Then a 2x4 wall with R13 insulation, bottom foot with only rigid
2" insulation might get you around R10

Are you sure the basement does not get any water ?
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Old 03-29-2010, 10:19 AM   #5
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My basement has an excellent "French Drain" system, so it does not flood as long as the sump pump is operational.

Even in the past 2-3 weeks where we had a lot of flooding in the Boston area, my basement was bone dry.
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Old 03-29-2010, 11:01 AM   #6
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If your budget can include the 2" insulation that would be best
Then build a 2x wall against that....if the basement is mostly underground you might add R13 to the top 6' or so

Our drainage system is pretty good too...but we had just a dribble of water on the floor
I'm planning on 1/2" rigid then 2x wall with R13
Floor I may do tile...then a throw rug if the wife wants one
But my basement makeover is years down the road
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Old 03-29-2010, 11:19 AM   #7
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Late last fall for the first time in years! our basement took in some water because our sump pump failed mechanically.

My house is small (1000 sqft), so making the most with the little space you have is key.

I am planning on doing the basement so that it has a "Me room", a kids play area, a laundry room, and lastly a bathroom.

I Am still not sure about the floor, I am thinking about the "Allure" from Traffic masters that is sold at Home Depot, but I don't know if I am 100% sold on the product yet.

Other option is to through some foam down, and then some tongue and grove plywood, and then carpet/tle on top of that... Who knows.

I just want to be sure that the Foam glued to the foundation walls is a good idea.
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Old 03-29-2010, 11:51 AM   #8
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Do a search on the site for allure before you decide
If there is a chance of water I would not go with wood floor, just my opinion
I'd rather have tile & throw rugs that can be replaced
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Old 03-29-2010, 09:25 PM   #9
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Figures 15 and 21: http://www.buildingscience.com/docum...gs?full_view=1
The 2" of rigid is better than 1/2" for the thermal break so the indoor moisture doesn't condense on the insulating foam board because it is warmer, not cooler. If you add glass batt, do the whole wall- not a portion so as not to get a convective loop, negating the batt: http://oikos.com/library/insulating_...lls/index.html Be careful when stapling batts: http://www.homeenergy.org/archive/he...99/991110.html

Be safe, Gary
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Old 04-01-2010, 10:01 AM   #10
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Gary, I will review the links you included thanks.

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