Value wrap provides GreenGuard performance at great savings. It acts a a barrier against air and water infiltration. Plus it breathes to allow moisture vapor to escape, reducing the potential for condensation buildup. Value Wrap's translucent design makes it quick and easy-to-install. And it's strong, cross-woven structure resists tearing, so there's less job site waste. Stays UV-stable up to 12 months. Nominal thickness; .008".