Protect Your Home’s Foundation A vapor barrier is an essential part of maintaining a healthy and dry crawl space. In Hilton Head, SC, the high humidity can lead to moisture buildup beneath your home, which can damage the foundation and support beams. Our vapor barrier services provide an impermeable layer that prevents water vapor from seeping into your crawl space. By installing a high-quality vapor barrier, you protect your home from mold, mildew, wood rot, and costly structural damage.