Bostik 915 Fast Set Adhesive 10.1oz, $9.49 USD/Box, LL Flooring (Lumber Liquidators)

The Bostik 915STM sealant is a one-component, construction-grade polyurethane sealant. It allows for 70% dynamic joint movement from the original joint shape, curing into a durable, flexible rubber upon moisture exposure. It features a rapid skin time for quicker top coating, excellent bonding to Kynar-coated metal, and comes with a leading warranty.