A two component system by which 100% solids, epoxy material is machine spray applied to the exterior seams and rivets on storage tanks. It is formulated for flexibility and adhesion to fight against weeps and leaks. The system can also be applied to prevent rusting between spot welded areas, corners, and otherwise hard to coat areas preventing unsightly rust streaking. Normally 2 – 3 men can completely seal the rivets and seams in a 120’ x 40’ diameter storage tank in 3 – 4 days.