Thickness is measured in "mils" (one-thousandth of an inch). A higher mil count indicates a thicker, more tear-resistant sheet.
Black plastic sheeting, often called or "poly," is a highly versatile material used for everything from blocking weeds in gardens to creating moisture barriers in construction. When buying, the most critical factor is the mil thickness , which determines the product's strength, durability, and intended use. Essential Thickness Guide (Mil) buy black plastic sheeting
: The standard for construction and gardening . At 6 mil, the plastic is thick enough to serve as a vapor barrier under concrete slabs or crawl spaces. Thickness is measured in "mils" (one-thousandth of an inch)