"Wilson" wrote in message
ink.net...
Use a vapor barrier below the floor, especially over basement/crawl space.
If there's a crawl space, put plastic on the ground there too.
Wilson

I hope you don't mean directly under the hardwood. I wouldn't want a vapor
barrier between the hardwood and the subfloor. The usual thing is to use
rosin paper between the hardwood and the subfloor.

-al sung