FloorPro, QT, #564, Self Leveling Primer, Prepares The Cleaned Surface, Improves The Bond, & Helps Prevent Pinholes & Buddles In The Finished Surface, FloorPro Primer Is Required As Part Of The 565 FloorPro Self Leveling Installation System, Coverage 100 To 150 SQFT Per QT, Drying Time Approximately 3 To 24 Hours.