DuPont Residential Sealant is a durable, highly flexible window sealant for use in general residential construction. Its a durable, flexible seal around windows and doors helps prevent water and air intrusion, and makes homes more durable and energy efficient. DuPont Residential Sealant is formulated to bond well with DuPont Tyvek, weather barriers, and other DuPont construction products, as well as most common building materials. As an integral part of a complete building envelope system, DuPont Residential Sealant helps control both air and water intrusion, to help make homes more comfortable, prevent water damage, and reduce heating and cooling costs.