jamesbnd73 Posted July 18, 2005 Report Share Posted July 18, 2005 We had a dirt crawlspace about 4 foot high with some gravel on top. No water problem. We recently had drain tile and a sump installed, and had a concrete floor pumped in. There was a vapor barrier laid down under the concrete before it was poured. Now, we are experiencing alot of condensation on the duct work running in the crawl, and it is forming large but shallow puddles on the floor. I know this isnt necessarily bad for the concrete, but we feel that the water laying there will evaporate and maybe start to mold or mildew the wood floor above. Any thoughts or suggestions? Thanks Quote Link to comment Share on other sites More sharing options...
Chad Fabry Posted July 18, 2005 Report Share Posted July 18, 2005 You didn't say how long it's been since the concrete was placed, but if it's been just a short time, wait and see if it's an ongoing problem. It takes a while for the waterto get out of the concrete and the condensation may be caused by that process. Quote Link to comment Share on other sites More sharing options...
jamesbnd73 Posted July 18, 2005 Author Report Share Posted July 18, 2005 The concrete was pumped in just about a week ago.Im not sure how long it takes for the concrete to cure. Quote Link to comment Share on other sites More sharing options...
kurt Posted July 18, 2005 Report Share Posted July 18, 2005 If it's only been a week, it ain't dry yet, especially w/ the hot humid weather we've been getting. Give it another couple weeks, then think about it again. Quote Link to comment Share on other sites More sharing options...
monte Posted July 19, 2005 Report Share Posted July 19, 2005 James Most concrete that is pumped has water added after it has left the truck chute by the pump operator. It makes the concrete easier to pump. The concrete is weaker in design strength by the extra water. The pump operator has change the concrete mix design. The concrete is still curing, take Kurt advice and give it a couple more weeks. Quote Link to comment Share on other sites More sharing options...
James Bond Posted July 19, 2005 Report Share Posted July 19, 2005 To my brother James, I agree with everyone else, you need to hold off for another week or more. Quote Link to comment Share on other sites More sharing options...
Brian G Posted July 19, 2005 Report Share Posted July 19, 2005 Indeed, 007 days is not enough time, especially if the concrete was shaken, not stirred. [] Brian G. The Masked Condensator [:-masked] Quote Link to comment Share on other sites More sharing options...
abettercrawlspace Posted August 21, 2005 Report Share Posted August 21, 2005 The condensation is probably the curing of the concrete, whether the operator added too much water or not. You may also consider sealing the crawlspace from the outside, and eliminating the hot humid air in the summers. Condition the air in the crawl with your HVAC system and maybe a dehumidifier, the same as you would in a basement. Sprayed polyurethane foam on the foundation will help you do this, and you'll save on heating bills in the winter, as well. www.crawlspaces.com Quote Link to comment Share on other sites More sharing options...
Erby Posted August 21, 2005 Report Share Posted August 21, 2005 Introduce some powered ventilation, i.e. fans, to help move the condensed water out of the crawl space for a couple of weeks. Quote Link to comment Share on other sites More sharing options...
hausdok Posted August 21, 2005 Report Share Posted August 21, 2005 Hi, Jeff Tooley, a North Carolina contractor who specializes in sealing crawlspaces and turning them into conditioned space has written about three articles for the Journal of Light Construction over the past couple of years. You can probably access at least one of those free at JLCONline at http://www.jlconline.com. Use the search feature and search for the keyword 'crawlspace' and look for articles since 2003 about conditioning crawlspace. ONE TEAM - ONE FIGHT!!! Mike Quote Link to comment Share on other sites More sharing options...
Erby Posted August 21, 2005 Report Share Posted August 21, 2005 Google "Joe Lstiburek" for a whole bunch of information on this topic. But note the correct spelling (as in the quotes). Quote Link to comment Share on other sites More sharing options...
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