Recoating A Railing
What is the proper process of recoating the railing? Is there ever a warranty given on powder coating?
Q. I have an aluminum railing that was powder coated already but done in the wrong shade of green. What is the proper process of recoating the railing? I am not a powder coating pro and want to be sure that the powder coating is done correctly. Is there ever a warranty given on powder coating? W. H.
A. The best way to remove powder from aluminum is media blasting. There are no messy chemicals involved and you won’t hurt the aluminum substrate with heat. Have your powder coater reapply the chemical conversion coating (pretreatment) before powder coating to ensure a durable finish suitable for outdoor exposure. Use a TGIC polyester to ensure a long-lasting finish. Warranties are at the discretion of the coater or original manufacturer. However, if this process is performed exactly as I say and is done properly, you can expect up to 15 years of service from this coating package (substrate, pretreatment, and powder coating).
What is right for the customer?
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Infrared cure is gaining increased attention from coaters as a result of shorter cure cycles and the possibility of smaller floor space requirements when compared to convection oven curing.