An exterior coating for wood and concrete, Behr’s Deckover is 100 percent acrylic resin fused with ceramic microspheres. The mildew-resistant coating is appropriate for decks, railings, walkways, patios, and more. Deckover can be used for horizontal and vertical exterior applications. Two coats of Deckover can cover up to 50-square-feet to conceal splinters and cracks up to a quarter inch deep. The coating comes in 54 custom solid colors.