Bound filler foam Is a one component polyurethane foam for use in multiple bonding, sealing, insulation and filling applications. It absorbs moisture from the environment to cure faster and can harden within  4 - 24 hours. After the foam sets it will not expand or shrink and can be cut, cleaned and painted over. For use on window frames, door frames, pipes, and general construction to fill gaps, seal, insulate or in bonding applications. It can also be used in waterproofing applications.