Tower® Residential Sealant for Tyvek® (formerly DuPont™ Residential Sealant) is a durable, highly flexible, urethane-modified acrylic window sealant for general construction use. It is formulated to bond well with Tyvek® Building Envelope Solutions Products, and other DuPont construction products, as well as the most common building materials. As an integral part of a complete building envelope system,  Tower® Residential Sealant helps control both air and water intrusion, to help make homes more comfortable, prevent water damage, and reduce heating and cooling costs.