After 9 years with my Decra stone coated galvalume 26 gauge steel roof, I am happy to report I have no visible signs of rust. You'd think as someone who lives within 2 miles of the Atlantic Ocean in a tropical rain forest climate zone with an average precipitation of 63 inches per year and prevailing breeze off the ocean, I might have issues if there were going to be issues.
How do I know I don't have issues? I recently removed 45% of my Decra roof tiles to install 102 Creotecc tile hooks for my PV system. During the course of installing the tile hooks and re-installing the roof tiles, I was up close and personal with over 100 pieces of my metal tile roof.
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