Moisture That Looks Like Water Coming Up Thru Floorboards

[JOANN]

When it is humid or has rained or the Central Air is on --- in different parts of the house - What looks like very thin oil or grease is seeping up thru the floor and hardwood floor. What can be causing this problem.

[Crawl Space MD]

hI,
wHERE ARE YOU WRITING FROM?
yOU SHOULD HAVE A LOCAL HVAC CONTRACTOR COME TO LOOK AT YOUR SYSTEM.
CRAWL SPACE MD