Yellow Radon Barrier Polythene sheet membrane for use in solid concrete ground floors to protect buildings against dangerous gas and water from the ground by providing an effective barrier against Radon, CO2, Low level methane and moisture, for the lifetime of the concrete slab in which they are installed.

Radon is a cancer-causing radioactive gas. It is the second leading cause of lung cancer deaths in the United States . It is produced by the decay of uranium-238 present in soil and rock. It easily penetrates many common materials like gypsum board, concrete block, mortar, wood paneling and most insulation. The 300mu membrane meets the requirements for use as a Gas Control Membrane against Radon or on gas contaminated land, in accordance with the recommendations published by the Building Research Establishment (BRE) and the National Building Regulations.