Will try to make it short. Background: Our crawl space usually dry. This has been a hot and humid summer in North Carolina
Today, we noticed the crawl space with moisture..some puddling on floor..from droplets from and on air condition unit metal case..the air carrying tubes too.
I researched and it seems this can be related to the need for insulation on metal parts, boots, etc., so that when cold conditioned air in tubing meets the warm humid crawl space air condensation won't ensue...I get that.
My problem:: we recently ( middle of winter 2015) reinsulated the crawl space joists. I told my husband that to reduce having to do it again...(the old sagged) instead of strapping as contractor did...use landscape fabric. Easy... accessible..breathable..air permeable. .moisture permeable ..just staple it up over insulation after joists were insulated.
HE says (because this is the first time we noticed this) ..it must be because of the one change we made.. ---the landscape fabric. We did my sons the same way..at the same time. A marathon. My son's house is conventionally built with wood framing.. Same issue..the boots with water droplets..the air conditioning unit sweating..floor water puddles.. We have an SIP construction. I say it is the weather, heat and humidity and no insulation around the air carriers..plus the boys did not get around to sealing the floor vapor barrier (winter came quickly) its there but with gaps..and so there is increased moisture from the ground available to condense that was not there before. The floor barrier completion planned for next month when it is cooler under the houses.
The son is in a panic thinking the landscape fabric is the culprit and needs to come down. The husband fears the same. I do not think thst is the issue. I don't see how it can be. It is air and moisture permeable and it currently feels dry ...what do you think???? Again we are in SIP so important that things breathe... I think the house vents through it like it should.. Additionally we have an air exchanger..not pertinent just an FYI.
Did I goof? I have searched everywhere for information, but I only find use of landcape fabric over crawlspace floor..never to secure and hold bat insulation
thank you for your educated opinions