If the temperature of the floor is below the dew point, then it will sweat. Maybe there's a cold wind blowing underneath the gap?
--Jakob > -----Original Message----- > Date: Tue, 10 Nov 2015 17:25:04 -0600 > From: "Lorell Hathcock" <lor...@hathcock.org> > > It is on the ground floor, but it is in a hut that has a wood floor that is > raised off the ground. There is a gap between the bottom of the floor and > the ground. > > -----Original Message----- > From: valdis.kletni...@vt.edu [mailto:valdis.kletni...@vt.edu] > Sent: Tuesday, November 10, 2015 5:13 PM > To: Lorell Hathcock <lor...@hathcock.org> > Cc: 'NANOG list' <nanog@nanog.org> > Subject: Re: Environmental Graph Interpretation > > On Tue, 10 Nov 2015 16:48:04 -0600, "Lorell Hathcock" said: > > Are there any one the list that would care to take a look at some > > graphs of temperature, relative humidity and dew point that I have for two > locations. > > In one of the two locations, I'm having a problem with the floor > > getting wet (condensation?). At the other everything is just fine. > > Is your moisture problem on a ground floor? Note that even well-cured > concrete is like 30% water, and can allow moisture to slowly migrate through > and weep. Usual cure is application of a proper sealant over the concrete.