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Moisture On Windows After Crawl Space Liner Theory

 
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Old 01-19-2018, 01:05 PM   #1
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Moisture On Windows After Crawl Space Liner Theory


I had a crawl space liner put in my crawl space three years ago and ever since i had it put in i have moisture on my windows that i never had before.
I built my house in 1997 and never had a drop of moisture on my windows until the crawl space liner was put in. In fact it was just the opposite my house was very dry. We would get nose bleeds in the winter and very dry itchy skin. I do not have a dehumidifier installed and my furnace is in the crawl space. My hvac guy cut a section of my fresh air intake out so that maybe my furnace would draw air from the crawl space and send it out the vent pipe. This did not help anything.

I was looking into having a heat recovery ventilator put in to help with the window moisture but thought since i never had this problem until the crawl space liner was put in that it had to have something to do with the liner.

Anyway hear is my theory..........i am wondering since i took the foundation vents out, even thought i would shut them in the winter they were not air tight. I was thinking that the leaky foundation vents were letting cool dry air into my crawl space that just through the natural stack effect that you have in a house that the cool dry air that was coming in the vents was working its way up into my house and pushing the warm moist air out.

I was thinking to test my theory was to put a few foundation vents back in and slightly open them in the winter to see if the window moisture stops.
What does anyone think of my theory and any other help or theories are welcome.

Thanks...................nicko
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Old 01-19-2018, 01:20 PM   #2
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Re: Moisture On Windows After Crawl Space Liner Theory


Yeah, you're right.

What is the construction of the rest of the house?

If you're handy a DIY hrv install isn't too hard.

You could do a few of these in the house also:

https://foursevenfive.com/product-ca...on/lunos-e2-2/

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Old 01-19-2018, 01:44 PM   #3
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Re: Moisture On Windows After Crawl Space Liner Theory


My question is; what is the reasoning behind installing the liner? Was there excessive moisture in the crawl space?

Andy.
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Old 01-19-2018, 01:51 PM   #4
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Re: Moisture On Windows After Crawl Space Liner Theory


What's the RH now?
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Old 01-19-2018, 02:06 PM   #5
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Re: Moisture On Windows After Crawl Space Liner Theory


Quote:
Originally Posted by ScipioAfricanus View Post
My question is; what is the reasoning behind installing the liner? Was there excessive moisture in the crawl space?

Andy.
Excellent question sir
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Old 01-19-2018, 02:17 PM   #6
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Re: Moisture On Windows After Crawl Space Liner Theory


Quote:
Originally Posted by ScipioAfricanus View Post
My question is; what is the reasoning behind installing the liner? Was there excessive moisture in the crawl space?

Andy.
No i did not have excessive moisture but have been reading about crawl space liners for a few years before i had it installed and the technology made sense to me. It wasn't until i was going to put central air in my house and my hvac guy was in my crawl space on a very humid day in the summer and noticed when he ran his hand over my duct work there was a slight bit of condensation on the metal duct. He said it was only going to be worse with cool air running through the ducts on hot humid days. It was at that point i decided to get the liner and it has defiantly helped with that problem. I get no condensation on my ducts when the AC is running in the summer.

My crawl space is really nice down there. You can take your shoes off down there, it is so bright and clean now. It is a nice crawl space as far as crawl spaces go. It is about four foot high and well lit and very clean.

thanks........nicko

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