SRW Rapid-Set Adhesive is a polyurethane adhesive. SRW has designed this adhesive for construction and landscape projects that require a fast set-up time. You can use this adhesive on almost any material. It even works on non-porous substrates. Working Time is 15 minutes and can be repositioned for up to an hour. This product is VOC-compliant in all 50 states and in Canada.