Powder Coating Frequently Asked Questions and Answers
Is Powder Coating more durable than liquid paint?
Powder coated parts will be more flexible, UV and chemical resistant than typical enamel or aerosol coatings. Powder coated parts will also be more corrosion resistant than most aerosol coatings.
Can I powder coat over rust?
NO, just as in applying a quality liquid coating you must remove the rust or corrosion first. This is accomplished with abrasive blasting, wire brush, an angle grinder with wire wheel, or sand paper.
Can I powder coat over paint?
If the coating can withstand the 400F cure then you can apply powder coat over it. If you are not sure of the previous coating or there are signs of coating failure it is best to remove the coating. This is easily accomplished with liquid paint removers available at home improvement or hardware stores. You may also remove the coating with abrasive blasting, wire brush, an angle grinder with wire wheel, or sandpaper.
How do I remove corrosion?
Corrosion can be removed by abrasive blasting, wire brush on an angle grinder with wire wheel or sandpaper.
How do I remove paint?
Paint can be removed with liquid paint strippers, abrasive blasting, wire wheel on an angle grinder or sandpaper.
How do I prep my part?
It is best to powder coat over bare clean metal. Be sure to wipe part with quality laquer thinner or acetone before coating. Using the above methods of paint and rust removal will assure a high quality finish.
What is the average coverage of the powder?
The 1.5 oz. Powder Packet will yield approximately 7 sq. ft. of coverage. Just as with liquid coatings this will vary with the type of part to be coated. If the part is a large flat object you will transfer more of the powder to the part than if you were coating a part that had many holes. Transfer of the powder to the part may decrease due to the powder being "blown through the holes of part to be coated.
Are any toxic fumes generated during the cure?
As with any coating process you must cure the powder in a ventilated area. The powder does not contain the VOCs (volatile organic compounds) associated with solvent based aerosol coatings, but you may notice a slight odor as the metal is heated to 400F.
Will the WAI System obtain the same results as a professional?
Your WAI Powder Coat System will give you professional results if you follow the instructions in this manual. The powder coating material itself is the same chemistry as what is used by professionals.
Why use powder in place of liquid or aerosol coatings?
Speed of application, faster clean up, no hazardous solvents, environmentally friendly, more durable and flexible than most liquid coatings, very chemical resistant and the elimination of runs, drips, sags and defects.