Polymeric sand for interlocking paving stones. Developed with Nextgel technology, SmartSand is a clean and reliable jointing polymeric sand for residential interlocking paver installations. SmartSand® Polymeric Sand from Techniseal® is a mix of ASTM C144 graded sand and special polymers that provides a stable joint between interlocking concrete pavers exposed to normal traffic. Applied dry, it hardens after being activated with water. It allows joints to resist erosion, weeds and insects. SmartSand is the smart choice for everyday projects where a high-performance sand may not be needed. Manufactured with the NextGelTM technology, SmartSand® is quick to activate, sets rapidly and leaves no undesirable haze on pavers. Specifications - Colour: Urban Grey - 22.7 kg (50 lbs) bag - Made with NEXTGEL technology - Enables easier, cleaner and faster installations - 15 year limited warranty - Meets ASTM C144 - Allows efficient grouting of residential surfaces - Installation area: Normal - Seal type: Regular - Joint width: Less than 1'' - Product type: Polymeric sand - Surface level: Flat - Type of surface: Concrete paver, Interlocking paver, ''Wet Cast'' paver - Covering power: The covering power varies according to the type of paving stone and the width of the joints. - Traffic: Pedestrian, Light vehicle - Guarantee: 15 years