Fast 2K Post Anchor Mix (10 Bags) — Fast-Setting Expanding Composite Post Foam for Deck, Fence, Mailbox & Playground Posts

Professional-grade, fast-setting post anchor mix that cures to support in 15 minutes. Each compact 2.5 lb bag mixes in seconds right inside the bag to form a waterproof protective foam ideal for deck posts, fence posts, mailbox posts and playground equipment. Built on the same technology professionals use to set utility poles, Fast 2K Post provides a quick, low-mess installation. The expanding composite formula bonds to wood, Vinyl and metal posts and delivers greater strength than traditional concrete. Hydrophobic and waterproof, it prevents water from entering posts—reducing rot, rust, deterioration and other water-related damage.