Great Stuff Polyurethane Foam Insulating Sealant

GREAT STUFF Pond & stone filler, sealer and adhesive is specifically designed to help quickly and easily build beautiful water features. By expanding to fill gaps and cracks, the polyurethane foam helps direct water to flow over the rocks in a waterfall, rather than under and in between. Plus, the foam’s black color means it’s easily hidden among the rocks and shadows. GREAT STUFF pond & stone can help improve aesthetics of water features, creating stunning landscapes. It can also be used to set and secure the cap stones in retaining walls.