This durable Tyvek® underlay reinforced with a laminated Polypropylene nonwoven can be used in all supported and unsupported pitched roof applications, including warm, hybrid and cold roofs. It is specially designed for the rough installation related conditions of fully boarded roofs and is also applicable for profiled cladding (metal sheet), pitched roofs and wall applications. Also exists as Tyvek® Supro with an additional integral adhesive lap.