The best stego wrap vapor barrier is designed with high-quality, virgin, polyolefin resins. As a result, it offers high durability and exceptional resistance to moisture and natural gases, i.e., Methane and Radon. These gases are also knowns as solid poisons and installing the Stego vapor barrier is the perfect solution to stay away from them. The high puncture resistance of the Stego 15 mil vapor barrier also ensures longevity and lifelong sturdiness.