Crawlspace encapsulation

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mellow

Resident Stove Connoisseur
Jan 19, 2008
5,591
Salisbury, MD
Pics of where the dehumidifier is in my crawlspace:

20221001_224354321_iOS.jpg
20221001_224222727_iOS.jpg

Other side of crawlspace:

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EbS-P

Minister of Fire
Jan 19, 2019
4,872
SE North Carolina
I am starting to understand why the unit has some bad reviews on amazon for not lasting that long if their units are doing the same thing as mine and cycling as much as mine does, it is no wonder they only last 3 years.
They are talked about as the premiere whole house /crawl space dehumidification manufacturer. I am considering an Oasis unit for my house
 

shoot-straight

Minister of Fire
Jan 5, 2012
775
Kennedyville, MD
Mine is sealed and sprayfoamed. I have A cheap DH from lowes. It does fine. Get the 3 year extra warranty, they will only last a few years but then you get a new one. My space runs between 50-60%.
 

mellow

Resident Stove Connoisseur
Jan 19, 2008
5,591
Salisbury, MD
Santa Fe is sending a new humidity control board, will see if that fixes the issue. They gave me some things to try and it didn't work, still acting like it is on a timer and turning on for about 5 minutes then off for 5 minutes. Yesterday it turned on 142 times, way to many times.
 
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EbS-P

Minister of Fire
Jan 19, 2019
4,872
SE North Carolina
Getting quotes for mine. Will likely seal and insulate while all the ducts are ripped out. Not looking forward to it.
 

mellow

Resident Stove Connoisseur
Jan 19, 2008
5,591
Salisbury, MD
Just an update, the new humidity controller is doing the same thing as the one it replaced. Now that the humidity is dropping I just set it to power on during the day and shut off at night. Will take this up again in the spring, probably will install a digital hygrometer to turn it on and off and not worry about it anymore.

Incase you are curious about the manual hygrometer they use, it is dead simple but doesn't work right:

20221113_160711678_iOS.jpg
 
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hockeypuck

Feeling the Heat
Sep 6, 2009
416
south central NH
I was talking to a friend that has been rehabbing his 250 year old farm house and his latest project was to use 2" thick pavers to place in his crawl space, over sand that was there. He then used mortar to seal the edges up against the foundation which consisted of granite block and field stone. Probably not at tight as plastic but he said he noticed the difference within a few days of completion. He had about 2 to 3 feet of head height.