How soon can I apply another layer of TotalBoat Flotation Foam to the previous layer? Annette DiOrio June 09, 2022 15:21 Updated You can apply another layer of TotalBoat Flotation Foam (2 lb. density or 6 lb. density) as soon as the surface of the previous layer of Flotation Foam has cooled down to about 75-90°F. Related articles Can I apply TotalBoat spar varnish on top of shellac? Can I use mica powder to tint TotalBoat polyester resins? Can I apply TotalBoat Polyester Structural Repair Putty to a metal surface? What is the thermal insulating capability of TotalBoat Polyurethane Flotation Foam? Comments 0 comments Please sign in to leave a comment.