: Stocks a variety of thicknesses, including 6-mil clear sheeting for roughly $83 and professional-grade 15-mil Husky Yellow Guard for approximately $524 .

Crawl space vapor barriers can be purchased from major home improvement retailers, specialized online supply stores, and local crawl space restoration companies . For general DIY projects, 6-mil to 10-mil polyethylene sheeting is widely available at big-box stores, while heavy-duty encapsulation projects (12-mil to 20-mil) often require specialty vendors .

: Often carries 10-mil barriers directly on the shelf, which can be difficult to find in-stock at other major retailers . Specialized Online Supply Stores

These stores are the most accessible for standard materials and offer both in-store pickup and delivery.