CertainTeed 902010 Membrain Smart Vapor Retarder Barrier-Use with unfaced Insulation, Perfect for remodeling, No Size, Clear

Model 902010 is for 10 foot tall walls and is 120-in x 100 feet Unlike traditional vapor retarder, membrain adapts permeance to varying humidity throughout the year to keep the wall cavity dry For use with un-faced insulation as a vapor retarder in climate zones where one is required Prevents moisture vapor from entering the wall cavity in the winter and allows any moisture buildup to escape the wall cavity in the summer Installs like poly with an extra level of moisture protection