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  #1  
Old 5/31/18, 11:18 AM
Michael Larson's Avatar
Michael Larson Michael Larson is online now
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Default Trapped moisture

Trapped moisture-100_5555-jpg
2005 build
Walk out basement
Poured foundation
House wrap behind vinyl siding over OSB
Unfinished basement walls
Trapped moisture behind vapor barrier on all but poured foundation portions.
Fiberglass batt insulation.
OSB not affected yet where checked
Minor organic growth. No odors.

I usually recommend removal of vapor barrier to let it breathe and dry out completely along with the use of AC and dehumidifier.


Any other views on this issue?



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  #2  
Old 5/31/18, 11:38 AM
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Roy Lewis, CMI Roy Lewis, CMI is online now
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Default Re: Trapped moisture

Why did it get wet in the first place?




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  #3  
Old 5/31/18, 2:00 PM
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Michael Larson Michael Larson is online now
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Default Re: Trapped moisture

Quote:
Originally Posted by rlewis5 View Post
Why did it get wet in the first place?
Apparent condensation. It does that up here. Moist air cool basement. Seen it many times.

Owner stated she seldom uses the AC and no de-humidifier present.

We no longer build way this because this happens. We use blue or pink board instead.



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Hudson, WI

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  #4  
Old 5/31/18, 2:20 PM
Christopher Currins, CMI Christopher Currins, CMI is offline
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Default Re: Trapped moisture

Quote:
Originally Posted by mlarson View Post
Attachment 201952
2005 build
I usually recommend removal of vapor barrier to let it breathe and dry out completely along with the use of AC and dehumidifier.


Any other views on this issue?
Yes, I agree. I'd definitely recommend to remove it and dry it out, and not reinstall it.


Is this area below ground? With your description I'm thinking not.
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  #5  
Old 5/31/18, 2:25 PM
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Michael Larson Michael Larson is online now
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Default Re: Trapped moisture

Quote:
Originally Posted by ccurrins View Post
Yes, I agree. I'd definitely recommend to remove it and dry it out, and not reinstall it.


Is this area below ground? With your description I'm thinking not.
Its a walk out basement. The areas not exposed had no moisture behind the plastic.

I usually just tell them to remove the plastic or slit it and let it breathe.

The sad thing is that the vapor barrier was required when built. I've seen too many with rotted OSB as a result.



As a Professional Home Inspector, I support the privacy of my clients.

You own your private information. I won't sell or give away yours, others do


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  #6  
Old 5/31/18, 5:04 PM
Dennis DiVito Dennis DiVito is offline
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Default Re: Trapped moisture

What would the walls be like if the interior sides were finished with drywall? How would you inspect that with knowing what you described as typical condensation issues in your region?


Just curious

Last edited by ddivito; 5/31/18 at 5:16 PM..
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  #7  
Old 5/31/18, 5:18 PM
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Michael Larson Michael Larson is online now
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Default Re: Trapped moisture

Quote:
Originally Posted by ddivito View Post
What would the walls be like if the interior side were finished with drywall? How would you inspect that with knowing what you described as typical condensation issues in your region?


Just curious
You can't.

It's better if finished but once moisture gets in it's like Hotel California.



As a Professional Home Inspector, I support the privacy of my clients.

You own your private information. I won't sell or give away yours, others do


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Hudson, WI

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  #8  
Old 5/31/18, 6:21 PM
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Roy Lewis, CMI Roy Lewis, CMI is online now
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Default Re: Trapped moisture

Besides all the rest of the comments... It does need to dry out..Yep!




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  #9  
Old 6/4/18, 10:17 AM
Erik Schmidt Erik Schmidt is online now
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Default Re: Trapped moisture

That's interesting, vapor barrier should be on the warm side, so what side is that in Wisconsin in June and then December? I suppose I would recommend replacing batts with board, easy to do as basement is not finished and is proven to work in new builds.



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  #10  
Old 6/4/18, 3:12 PM
Michael Larson's Avatar
Michael Larson Michael Larson is online now
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Default Re: Trapped moisture

Quote:
Originally Posted by eschmidt View Post
That's interesting, vapor barrier should be on the warm side, so what side is that in Wisconsin in June and then December? I suppose I would recommend replacing batts with board, easy to do as basement is not finished and is proven to work in new builds.
That's how it's done on more recent builds.



As a Professional Home Inspector, I support the privacy of my clients.

You own your private information. I won't sell or give away yours, others do


www.InspectraPro.com
www.MinnesotaHomeInspector.biz

Michael Larson
Hudson, WI

Services provided in East MN and West WI

Call me


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  #11  
Old 6/4/18, 9:23 PM
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James E. Braun, CMI James E. Braun, CMI is offline
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Default Re: Trapped moisture

Get rid of the vapor barrier, so the moisture can more through the wall. In Missouri, we are starting not to put vapor barriers on the inside because of that reason.



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  #12  
Old 6/4/18, 9:43 PM
Michael Larson's Avatar
Michael Larson Michael Larson is online now
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Default Re: Trapped moisture

Quote:
Originally Posted by jbraun View Post
Get rid of the vapor barrier, so the moisture can more through the wall. In Missouri, we are starting not to put vapor barriers on the inside because of that reason.
That was my recommendation.



As a Professional Home Inspector, I support the privacy of my clients.

You own your private information. I won't sell or give away yours, others do


www.InspectraPro.com
www.MinnesotaHomeInspector.biz

Michael Larson
Hudson, WI

Services provided in East MN and West WI

Call me


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