Gator Polymeric Super Sand Bond. for Concrete Paver Joints up to 1 Inch (Slate Gray)80.99Buy!$Newegg.comDelivery: in USA ReportAdvanced Haze Free Technology Can be used for joints up to a maximum of 1 inch (2.5 cm) ASTM C-144 fine gradation allows use in even the tightest joints OSHA silica crystalline compliant (OSHA 29 CFR more→1926.115 Helps prevent erosion due to wind, rain, and freeze thaw cycles For Drainage application, rain safe 1 hour after water activation. Works above 32°F (0°C). Waterproof Bag Can be laid flat and stored outdoors. (Lay bag flat on its back, so front of the bag is facing you.) Pallets can be stored outside