Why Epoxy Yellows in the Sun
The aromatic chemistry in most epoxy resins reacts to UV — the surface amber-shifts over months of direct sun. The floor stays sound; the color just warms.
Where Homeowners Notice It
The strip inside a south- or west-facing garage door that gets direct sun for hours a day. Interior areas rarely show a change.
UV-Stable Topcoats Solve It
A polyaspartic or aliphatic urethane topcoat is UV-stable. Installed over the epoxy body, it keeps the color true even in direct sun exposure.
Exterior and Patio Coatings
Full-sun patios and pool decks need UV-stable systems throughout, plus surface texture for slip resistance. Ask about outdoor-rated systems specifically.