Kynar paint for Barndominiums

Kynar Paint for Barndominiums

Many potential barndominium owners are looking to get the greatest value for their investment and many see this as their ‘forever’ home. If you fall into this category, I would highly recommend exploring Kynar® painted steel.

I could extol aesthetic reasons to use Kynar painted steel for longer than anyone would be willing to listen.
Polyvinylidene fluoride is acknowledged as the premium resin for coil coatings. Popularly known by its original trade name Kynar, PVDF is a kind of fluoropolymer, a family which includes Teflon and Halar. Key to these chemicals’ toughness is the bond between carbon and fluoride, the strongest possible polymeric connection.

PVDF resin has superior chalk resistance and gloss retention, as well as stain and chemical resistance. It is softer than SMPs and polyesters, however, making it highly formable without risk of cracking, but also relatively easy to scratch during transport or installation. PVDF is most durable when it makes up 70 percent of resin; higher concentrations do not coat well, since acrylic is important for dispersion during coating processes.

There are two general classes of pigments. Organic, or carbon-based, pigments are generally synthetic and relatively inexpensive to make. However, organics have fairly weak molecular bonds which are easily broken down by moisture, UV and pollutants, and so, are prone to fading. Inorganic pigments are those which do not contain carbon, and may be naturally occurring or manufactured. They generally offer good fade resistance, with an exception of carbon black. Many simple inorganics are metal oxides, such as widely used iron oxide and titanium dioxide.

Kynar 500/Hylar 5000 systems, which are required to contain 70 percent PVDF, do not vary greatly between manufacturers. Since these paints carry 20- to 30- year warranties which allow for extremely little face, these companies all use ceramics and appropriate inorganic pigments.
One manufacturer we purchase Kynar 500 painted steel from is McElroy Metal. Here is a photo which really shows off performance differences between Kynar and SMP: http://www.mcelroymetal.com/elements/files/Kynar%20500%20VS.%20SP%20Flyer

Sadly, PVDF paints are not available nationwide. Personally – if available where I was planning to build and color choice was other than White, I would make an investment for better paint. I want my building to look as close to new as possible, for as long as I own it!

At NFBA’s (National Frame Building Association) 2019 Expo I cornered Sherwin-William’s representative for further information on Fluropon® (PVDF). Please enjoy this video:

https://drive.google.com/open?id=14fzlL1agiMOZ6Sq67ce6H5JrF9iSc1Kp

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