DuPont™ Residential Sealant is a durable, highly-flexible sealant for window and door installation and general construction. This sealant is scientifically formulated to bond with DuPont Building Envelope Solutions products and a wide range of general building substrates. UV stable sealant bead. The cured sealant is durable and flexible enough to accommodate ±25 percent movement of original joint dimension when installed in a properly designed weatherseal joint.