ROBERTS 6399 Firm Set Transitional Pressure Sensitive Adhesive is formulated for installation of For installation of Luxury vinyl tile (LVT), luxury vinyl planks (LVP), vinyl composition tile (VCT), vinyl sheet goods, carpet tile (vinyl backed), carpet cushion to substrate, and stair tread (rubber & vinyl). This is a very aggressive, high-tack transitional adhesive with superior shear strength and high resistance to lateral forces, making it ideal for heavy traffic, with great performance under rolling loads. ROBERTS 6399 installs like a pressure-sensitive adhesive, and firms as it cures to form a permanent bond. Used as a pressure sensitive adhesive, it has a 60 minute open time and a 12-hour working time. Powered by Microban, this antimicrobial product protection helps fight the growth of stain and odor-causing bacteria that can cause product degradation. For semi-wet installation, it has a 20 minute open time and a 40 minute working time. Easy to clean it dries clear, has high resistance to moisture with low odor and VOC (less than 1g/L). It is FloorScore and CRI Certified.