Formato Seating with powder coat finish
Powder coated surfaces are more resistant to chipping, scratching, fading and wearing than other finishes, such as paint. Powder coat is applied as a dry powder with a small electrostatic charge that holds the powder to the metal. It is then baked in an oven, which causes the powder to “melt” into a smooth, consistent coating. This process creates a durable finish, but it has its limitations. We’ve come up with a few basic guidelines to help you decide whether powder coating is right for your project:
If the product is steel or iron, and being installed in the GROUND plane (i.e. tree grate, trench grate, manhole cover, plaque, etc.):
Foot traffic has worn away powder coat finish.
Stick with RAW metal. Painting or powder coating is not recommended because any traffic (foot or otherwise) will eventually wear away the finish, and the rust process will begin in the areas where the finish has worn off.
Also, keep in mind that most powder coat colors will lessen the slip resistance of the casting.
If the reason you want to powder coat your cast iron grates is that you don’t want to witness the rusty phase of their natural oxidation process, a better option is our Baked-On-Oil Finish (see above for details).
If the product is steel or iron and being installed in the VERTICAL plane:
POWDER COAT or galvanize* to prevent bleed. (Aluminum, Bronze and Stainless Steel can be used raw in the vertical plane, as these alloys typically will not bleed onto surrounding surfaces.) Our standard powder coat colors are from Cardinal® and Tiger Drylac®:
For additional color choices, please visit http://www.cardinalpaint.com/powder/color-chart/
*We recommend a galvanized finish for steel only. It can theoretically be used on cast iron, but it can be risky aesthetically, and unlike steel, galvanizing cast iron does not add to its longevity.
If a light color powder coat is specified:
We recommend “e-coat” full-immersion dip as a primer before a powder coat finish is applied. Here’s why: the lighter the color of powder coat, the higher the chance you will see rust bleeding. Because of that, it is extremely important to coat the cast iron or steel surface completely–especially in hard-to-reach areas that aren’t always accessible with a powder coat spray gun. “e-coating” immerses the object into a liquid, providing a more even and thorough distribution of the coating, and offering an extra layer of protection against rust bleeding.
Adding “e-coat” and/or powder coat to your grates typically requires an additional 10-14 day lead time.