5 gallon. 100% solids, moisture cure urethane adhesive, high green strength formula. For use on prefinished solid plank, flat milled shorts, bamboo, parquet, 3 and 5-ply engineered plank, and plywood. It can also be used to install ceramic tile, marble, and stone inlays for light commercial and residential applications. Use over all substrates common to hardwood flooring installations including concrete, plywood, particle board, well bonded vinyl, ceramic tile, cement backer board, poured gypsum underlayment, cement patch underlayment, radiant heated floors, and terazzo. Dryimg time: 8 hours light traffic, normal traffic after 24 hours. Coverage varies by trowel. Example: 1/8 x 1/8 x 1/8 sq is 70 to 80 sq. ft. per gallon. Tan/brown mastic. Maximum open time is 90 minutes but varies depending on conditions.