The Methane Pro Hi Performance Gas Barrier is an essential tool for any construction or building project. This high-quality product has been specifically designed to provide an effective barrier against the permeation of methane and radon gases in the ground. The gas barrier is a robust, durable, and easy-to-install membrane that offers superior protection in even the most challenging environments. It comes in a roll measuring 1.6m x 50m, providing a total coverage area of 80m2.