Will UV light affect System Three epoxies?

Products based on room-temperature curing epoxy resins have poor resistance to UV or sunlight.  Depending on the severity of exposure, the surface will become dull, then cloudy, finally chalking breaking down sometimes in less than a year's time.

We recommend overcoating with System Three Marine Spar Varnish or WR-LPU, both thin-film coatings which contain UV absorbers to protect the epoxy and the surface underneath from the sun.

Please see the linked white paper on Clear Finishing Outdoor Wood for more information on recommended products as well as instructions on the application. 

Was this article helpful?
0 out of 0 found this helpful



Article is closed for comments.