Problems occur because of the constant movement to which metal is subjected.
Movement causes leakage at the seams and flashing as well as metal degradation. Rusting starts years before the building owner is ever aware it is taking place. After removing rust scale and power washing the roof, Weather Barrier 5003 rust inhibitive primer is applied. All fasteners, seams and flashing are then coated with Weather Barrier 1750 Patching Compund. Polyester mesh is imbedded into the 1750 on all of the seams and around flashing.