Inside a crawl space, cover exposed foundation walls with 1-1/2 inches of rigid, moisture-proof insulation ... pipe leaves water on the plastic. "A puncture-resistant, single-layer vapor barrier ...

Encapsulation is an option that falls between a vapor barrier and full foam insulation. While a plastic sheet covers porous materials like a dirt crawlspace floor, encapsulation would close in ...

Unfortunately, after installing a vapor barrier, you may need to replace your insulation, too, or risk trying to keep a poorly insulated house warm at great expense. Jimmy Hertilien, senior ...