PermaCoat Powder Coating Our pre-galvanized steel base material is subjected to an 11-stage process to cleanse & prepare the steel for a dual top-coat finish. PermaCoat’s corrosion resistant abilities far surpass those of painted surfaces and have a “no-mar” polyester powder top coat. This dual coating not only provides resistance from weathering but also reduces scratch & burnishing marks typically encountered during shipping. Once completed, the 7-stage Pre-Treatment will have removed everything from the surface of the steel that might inhibit the finish from properly adhering during the next 4-stage Double Coating process. Corrosion occurs more easily without the proper preparation & protection, which is why Ameristar has put our fence products to the test based on ASTM B117 standards. The results speak for themselves.