Techniseal NOCO No Compaction Polymeric Sand 50 lb – Joints to 4"

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The First True Alternative to Mortar and Stone Dust — No Compaction Required Install flagstone, natural stone, and large-format slabs the smarter way with Techniseal NOCO No Compac tion Polymeric Joint Sand. This 50 lb bag is the first true alternative to mortar and stone dust — a next-generation polymeric joint that requires zero mechanical compaction, handles joints from 1/4" up to 4" wide, and cures into a rock-solid, flexible, weed-free joint backed by a 20-year limited warranty. No vibrating plate. No damaged stones. No cracked joints. Just sweep, activate, and walk away. Why NOCO Changed the Hardscape Game Traditional polymeric sands demand mechanical compaction to lock in — which isn't possible (or smart) with delicate flagstone, large-format slabs, textured surfaces, or wet cast pavers. NOCO solves that problem. Its high-compressive-strength polymer formula flows smoothly into joints and hardens without a single pass of a plate compactor, preventing damage to expensive stone while delivering commercial-grade durability. Key Features & Benefits No compaction required — perfect for flagstone, natural stone, and delicate surfaces Handles joints from 1/4" up to 4" wide — ideal for irregular flagstone and wide-joint installations High compressive strength — withstands pedestrian, light vehicular, and heavy vehicular traffic Flexible formula — moves with soil and follows freeze/thaw cycles without crumbling Strong adhesion — bonds to inner joint walls without contracting Permeable — maintains proper drainage while blocking weeds Prevents weed growth and deters ants, insects, and pest nesting Perfect for high-humidity environments, steep terrain, and heavy traffic areas Works on hard base, cement/sand base, and concrete overlay installations 20-year limited warranty Compatible With Flagstone, natural stone, large-format slabs, highly textured surfaces, concrete pavers, wet cast pavers, clay pavers, concrete slabs, porcelain tile, and false joints. Perfect For Patios, pool decks, walkways, terraces, pathways, pool surrounds, outdoor kitchens, and commercial hardscape installations where compaction isn't possible or practical. Coverage (per 50 lb bag) Narrow joints (under 1/2"): up to 120 sq. ft. Wide joints (1"–4"): approximately 20–40 sq. ft. Coverage varies with joint width, depth, and surface type. Use our polymeric sand calculator for your exact bag count. Installation Notes Pavers and joints must be completely dry. Temperatures must stay above 50°F for 48 hours after installation. Turn off sprinklers. Do NOT use as capping sand or mix with other materials. Wait 7 days before cleaning; 30 days before pressure washing or sealing. Upgrade from mortar and stone dust to the #1 no-compaction jointing solution. Order Techniseal NOCO today. Show more