Benefits of Electro-Static Coating
Click here to contact Binford by email  ...Or call 916-362-4283
 What is Powder Coating?

Simply put, powder is paint applied by a different method. A method ideal for coating all sides of your new gate or fencing evenly. Most all powder paints start life as a liquid, very similar to spray paint. This is where the resin, various components and pigments are mixed into a homogenous mass. From there they are partially cured, converted into a solid, extruded and ground (cryogenically) to the desired level. Color matches are much more difficult with powder, as once it is made into the powder coating, it is done, versus paint that can have additives used to give desired effects (color tint, gloss, leveling, texture etc.).

There is a misconception that powder is some space age material akin to high tech ceramics and carbon fiber. That’s generally not true. Powder is just another method of laying down an organic film, i.e. paint. A powder coating of epoxy will have the same basic properties such as poor UV (sunlight) resistance as a liquid paint. For fencing and gates, resin types are limited to Acrylic, Polyester, TGIC Polyester and Urethane resins. These are the systems that have the best UV resistance which equates to longer finish retention outdoors.

Most powders have very good chemical and corrosion resistance, but again it is resin specific. Epoxies have excellent chemical resistance. Polyesters and Urethanes are typically used for aesthetic coatings on steel/iron Fencing and Gates and have good resistance. Powders do have an advantage over liquid paint here. If you can, imagine how a liquid coating dries or cures. Solvent has to escape from the film as it "dries down". If you were to look at this under a microscope, you would see a bunch of little pinholes that look like small volcanoes. This is an avenue for moisture and chemicals to penetrate the film more quickly, accelerating corrosion. Powder simply melts down at cure temperature and (usually) isn’t prone to pin holing. Castings are the exception and are coated after pre-heating so that the pores of the casting don’t "out gas" during the cure cycle.

Powder coating was introduced to the United States in the late 60’s. It started to really take off in the mid 70’s and has steadily gained in popularity for a number of reasons. Powder coating is environmentally friendly. Powders contain no solvents and thus have very low air emissions when curing. Typical powders have a VOC (Volatile Organic Compound) rating of <1.0 pounds per gallon versus liquid paints in the range of 2.5-7.0 pounds per gallon. There is very little waste with powder. Powder overspray can be collected and reused, rather than just thrown away as with paint over spray.

How is it done?

Powder is sprayed (and in some cases dipped) on parts where it clings by static electricity. From there it is baked, where it melts, and evenly flows and cures.

About Colors

Custom color matching is not offered in powder . It simply costs too much to make a batch of powder for one application. Our coater has a good selection of "sample panels" from the powder manufacturers. Most commercial fence and gates are coated in low gloss black.

 916-362-4283    Fax: 916-362-4295