Can be used for joints up to a maximum of 2 inches and its ASTM C144 gradation allows use in even the tightest joints Faster insallation time For Drainage application, Rapid Set rain safe 15 minutes after water activation. Works above 32°F (0°C) Key Product Features No Dust, Haze Free, No Blower, and one watering Waterproof bags. Intact pallets or bags can be laid flat and stored outdoors. (Lay bag flat on its back, so front of the bag is facing you.