A More Sustainable Fluorinated PVDF Metal Coating
With the PVDF coating Fluropon Pure, “fluorinated” does not necessarily mean persistent, bioaccumulative, and toxic, but it does have a complicated environmental profile.
Metal coatings have a difficult job. When used on building exteriors, such as for cladding, they have to last decades, protecting the metal against oxidation. They also have to resist damage from abrasion, temperature extremes, dirt, acidic urban conditions, moisture, and ultraviolet light—all while maintaining color and gloss. Combining all these attributes usually requires coatings that contain potentially toxic materials such as hexavalent chromium, phthalates, and/or highly fluorinated per- or polyfluoroalkyl substances (PFAS).
For those looking to eliminate chemicals of concern from exterior metal coatings, there are few options, but Sherwin-Williams’ Fluropon Pure offers a combination of premium, long-term durability and performance while eliminating the worst chemistries. (Sherwin-Williams acquired Valspar, maker of Fluropon, in 2017.) As with most complex high-performance coatings, however, its chemistry—and environmental profile—is complicated.
Published May 6, 2019