System Three offers one epoxy system called SB-112 that is UV-resistant. This epoxy system is formulated to have maximum ultra-violet light resistance consistent with its other properties. However, no epoxy resin system is ultimately resistant to degradation by sunlight. We recommend that substrates built using SB-112 epoxy be protected from sunlight exposure when not in use to increase longevity. System Three products that will provide protection, in order of effectiveness, are:
1) Pigmented WR-LPU
2) WR-LPU - Clear gloss and clear satin
3) System Three's Marine Spar Varnish
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