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crawl space moisture klaudon 11-15-2006
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Posted by on November 15, 2006, 5:07 pm


hi, I have excess moisture in my old house (~ 1930s) crawl space. It
has a very small cellar and the rest is a crawl space that is only
about 16 inches and includes plenty of barriers such as ducts and
plumbing, and has only 2 vents. It seems that it would be good to
place a vapor barrier and possibly close vents and possibly add a
dehumidifier BUT due to the low crawl space it would be somewhere
between extremely difficult to impossible to install a vapor barrier.
Any suggestions? Thanks!


Posted by Lawrence on November 15, 2006, 5:28 pm



klaudon@bresnan.net wrote:
> hi, I have excess moisture in my old house (~ 1930s) crawl space. It
> has a very small cellar and the rest is a crawl space that is only
> about 16 inches and includes plenty of barriers such as ducts and
> plumbing, and has only 2 vents. It seems that it would be good to
> place a vapor barrier and possibly close vents and possibly add a
> dehumidifier BUT due to the low crawl space it would be somewhere
> between extremely difficult to impossible to install a vapor barrier.
> Any suggestions? Thank

Thats a tough problem. 16" is not enough room for anyone to do a lot
of work under there. You say you have "excess moisture". Exactly
what type of problem is this moisture creating?


Posted by klaudon on November 16, 2006, 12:23 am


Lawrence, thanks for the reply. By excess moisture I mean, the house
(~ 700 square ft), smells musty and the cellar door (iron) has a ton of
condensation on it when you open. The small cellar (~ 100 square foot)
also smell very musty. The home too seems to have a lot of moisture
(crackers, chips, etc go stale quickly) which I presume to be coming
from the crawl space. Any ideas?

Lawrence wrote:
> klaudon@bresnan.net wrote:
> > hi, I have excess moisture in my old house (~ 1930s) crawl space. It
> > has a very small cellar and the rest is a crawl space that is only
> > about 16 inches and includes plenty of barriers such as ducts and
> > plumbing, and has only 2 vents. It seems that it would be good to
> > place a vapor barrier and possibly close vents and possibly add a
> > dehumidifier BUT due to the low crawl space it would be somewhere
> > between extremely difficult to impossible to install a vapor barrier.
> > Any suggestions? Thank
>
> Thats a tough problem. 16" is not enough room for anyone to do a lot
> of work under there. You say you have "excess moisture". Exactly
> what type of problem is this moisture creating?


Posted by Mark on November 15, 2006, 5:29 pm



klaudon@bresnan.net wrote:
> hi, I have excess moisture in my old house (~ 1930s) crawl space. It
> has a very small cellar and the rest is a crawl space that is only
> about 16 inches and includes plenty of barriers such as ducts and
> plumbing, and has only 2 vents. It seems that it would be good to
> place a vapor barrier and possibly close vents and possibly add a
> dehumidifier BUT due to the low crawl space it would be somewhere
> between extremely difficult to impossible to install a vapor barrier.
> Any suggestions? Thanks!

it has exposed earth for a floor?

if so you need a vapor barrier...

Mark


Posted by m Ransley on November 15, 2006, 5:59 pm


You can buy plastic on a wide roll and push it with poles. Or get a
skinny miget.


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