Z-Poxy Finishing Resin is a premium light weight two part epoxy laminating/finishing type resin. Use for fiber-glassing the center section of a wing or the entire airplane. Great for sealing model boat hulls, inside and out. Use to seal all engine and fuel tank areas. It is absolutely the best for sheeting foam wing panels. It will bond to itself and does not get brittle with age. Long cure formula for easy application, sands easily for a smooth finish and is compatible with many polyester resins.