Half Off Ponds Waterfall Gun Foam – 12 Pack Black Expanding Pond Foam Sealant for Koi Ponds, Waterfalls & Landscape Rockwork – 24oz Polyurethane Can for Foam Gun – Outdoor Waterproof Gap Filler

Direct water exactly where you want it—over rocks, not under—by sealing gaps between stones with this professional-grade black expanding foam. Ideal for koi ponds, pondless waterfalls, and backyard streams.This 24oz can is designed for use with a foam gun (sold separately), offering precision application and reduced waste. Great for large-scale installations and detailed rockwork in landscaping projects.Acts as both a waterproof foam sealant and a stabilizing adhesive for rocks and boulders. Prevents erosion and shifting while supporting the structure of your pond or waterfall feature.Formulated with durable polyurethane spray foam, it cures to a weather-tough, flexible seal that holds up in wet, outdoor environments. Perfect for long-term use in any climate.Whether you're a homeowner or a landscape pro, this 12 pack black pond foam is easy to apply and delivers consistent, high-quality results. A go-to choice for anyone building or maintaining water features.