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Old 04-21-2013, 08:35 PM   #16
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Should I put new insulation in the basement?


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I mostly get insulation for basement walls results. I just didn't know how to properly insulate because we are leaving the basement unfinished.
It's been said that leaving insulation exposed is a bad idea, I think the insulation itself even says not to leave it exposed, though it's usually due to the kraft paper/foil they put on.
I believe too that this insulation will actually burn if it gets hot enough, the rigid styrofoam board, Celotex, styrene etc definitely WILL burn and must be covered.
A house around the corner from me undergoing some long term renovations while the fmaily lived in it had exposed insulation the fire marshall said, one night a hanging ceiling lamp cord caught in a metal hide-a-bed's frame earlier finally gave out and shorted, it started a fire in there around 2 AM, the fire dept said that by the time they got there the entire house was in flames which were coming out the windows. They said the exposed insulation in the ceiling etc had gone up so fast there was no chance anyone could have been rescued or made it out alive.
A woman and 3 kids burned to death in that fire, there were no smoke detectors, or fire extinguishers.
They did not specify exactly what kind of insulation the house had, but the debris pile did have some puffs of the yellow fiberglass insulation in it I noticed.

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Gary in WA (04-23-2013)
Old 04-22-2013, 11:45 PM   #17
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Should I put new insulation in the basement?


Never leave paper-faced insulation uncovered in a basement, as you said. SPF is allowed left uncovered under certain requirements; http://publicecodes.cyberregs.com/ic...016_par015.htm

Glad you reminded me to mention-- use Thermax --- http://building.dow.com/na/en/produc...athing.htm---- or R-max (foil-faced) and acceptable for most/all building departments without the thermal fire barrier, and--- check with local AHJ.http://www.rmax.com/specialty-products.asp

Thanks again, RWolff! Glad you're awake...

Gary
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Old 04-28-2013, 10:45 AM   #18
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Should I put new insulation in the basement?


So the moisture coming in is from the house not being properly insulated from the outside? Would it be ok to go ahead and replace the current insulation with the rigid foam board?

There is also a product called roxul. Would this be better then the foam board?

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Old 04-28-2013, 10:48 AM   #19
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Should I put new insulation in the basement?


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So the moisture coming in is from the house not being properly insulated from the outside? Would it be ok to go ahead and replace the current insulation with the rigid foam board?
Actually the moisture is from both inside & outside. What needs to be done first, is seal any air gaps, before you do anything.
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Old 04-28-2013, 11:04 AM   #20
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Should I put new insulation in the basement?


do I need to seal with caulk where the sill sealer is?
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Old 04-28-2013, 12:48 PM   #21
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Should I put new insulation in the basement?


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do I need to seal with caulk where the sill sealer is?
Yes you need to seal along the rim & sill joist areas, along with any areas, that pipes & wiring enter the attic space, before you can do any insulation.
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Old 04-28-2013, 01:25 PM   #22
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Should I put new insulation in the basement?


Does it matter what type if caulk I use?
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Old 04-28-2013, 02:32 PM   #23
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Should I put new insulation in the basement?


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Does it matter what type if caulk I use?
Window & door 35 year usually works, or the gray silicone based caulk, so it will flex with the house.
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Old 04-28-2013, 04:33 PM   #24
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Should I put new insulation in the basement?


Cold you give us a picture of the siding on that rim joist with the water wetting (first photo), from the exterior?

Gary

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