US: After two years of research and development, DuPont has launched 'an industry first:' insulating housewrap.
"This is arguably the most important introduction in our product group in a long time," said Jim Ash, new Business Development Manager for DuPont, to Remodelling magazine. "It's taking us into the insulation business, which is a big strategic push for us, and hopefully the first of many. All the while, our goal is to help build durable houses and mitigate risk - we haven't deviated from that."
Tyvek Thermawrap R5.0 comprises DuPont's Tyvek housewrap bonded to an insulation blanket. Ash said that Thermawrap R5.0 provides builders with another alternative to insulating homes from the outside. The goal is to offer a net effective R-value of R-5.
DuPont said that the Tyvek on the outside of the blanket works the same as if it was installed on its own by keeping air and bulk water out of walls, but also serves as a breathable barrier allowing moisture vapour to escape to the outside. In addition, DuPont said that the blanket increases the temperature of the sheathing, which decreases the chance for interstitial wall condensation in heating climates. "This reduces the likelihood of getting moisture vapour inside the walls," said Ash.
The insulation blanket is made of proprietary fibres, including 20% pre-consumer recycled Tyvek. The product is available in 4x40ft rolls.
