DEFY Extreme Composite Deck Sealer is an extremely durable clear finish that helps to prevent the return of black stains on composite decks and protect against the damaging effects of water, fungi, and UV radiation on composite wood surfaces.
"This V.O.C.-compliant, water-based product is fortified with zinc nano-particles, a natural deterrent to recurring black algae stains." -Retrieved 9/11/2020 from https://www.defywoodstain.com/product/defy-composite-deck-waterproofing-sealer/
800 S 7th St
Richmond, IN 47374
available online (see 'Data Sheets')