Zinc Primer (Prevents Rust Corrosion)

For harsher climates we can also provide an extra layer of protection by applying a layer of Zinc Rich epoxy primer prior to the powder coating. Zinc Rich epoxy primer is a powder undercoating specifically made to improve corrosion resistance when the equipment is installed in or near corrosive environments such as anywhere near sea water, salt fog etc.  It is designed to be an unusually dense plastic powder that contains sacrificial zinc metal.  The zinc metal corrodes before the substrate does because the zinc is more reactive than the steel substrate it is protecting.  It is made to work in concert with a sun weathering top coat, such as the polyester powders that we normally use.  When used with good metal working practices such as removing sharp edges by deburring them it can help improve the life of powder coated metal items.