Aluminum coating differs from zinc coating in that it acts primarily as a physical barrier that is formed by the aluminum oxidation process.
Lunar vs kynar roof coating.
No other coating system withstands the rigors of nature and time like those based on kynar 500 resins.
Noted by architects around the world kynar 500 pvdf resin based coatings are precisely the product necessary to provide such protection and preservation to aluminum galvanized steel and aluminized steel.
And is considered to be a state of the art paint coating to apply to your metal roof.
The federal trade commission mandated that elf divest one of its production facilities.
This coating was sold under the kynar 500 trade name in the mid 60 s.
Kynar 500 pvdf resins are marketed through a strict licensing program to maintain consistency quality and availability on a worldwide basis.
Kynar is made up of mostly carbon fluoride bonds one of the strongest known chemical bonds.
This high performance fluoropolymer resin with its extraordinary capability to.
Watch today s episode to learn about common misconceptions in the metal roofing industry.
Kynar 500 coatings and finishes consistency through licensing.
Aluminized steel exhibits an even matte finish.
Polyvinylidene fluoride resin known within the coating industry as pvdf is commonly sold under the brand name kynar.
In the 80 s pennwalt was acquired by elf atochem now called arkema.
Siliconized modified polyester have you ever seen a metal roof where the paint was flaking off chipping or just fading very badly.
Why does it work.
Kynar is now produced by atofina chemicals inc.
Mill finish galvalume panels with an acrylic coating are also cheaper than siliconized polyester or kynar 500 making it a good option for a lower cost metal roof in areas at least 1 mile or more from salt water.
Astm a 463 specifies that the minimum weight of aluminum coating for metal roof panels is 0 65 ounces per square foot on both sides of the metal panel.
This is similar in structure to teflon the non stick protective covering used for pots and pans.
The material is extremely non reactive with many different substances and it s a pure thermoplastic fluoropolymer that is often used when a coating that is extremely pure strong and able to resist heat bases acids and solvents is needed.