Sansin. The new 2-Coat DEC Formula deck stain requires less product than other deck stains but offers deep penetration and long-term protection for wood decks. Designed to protect cedar, pine, spruce, fir, pressure-treated lumber, and exotic hardwoods, 2-Coat DEC deck stain incorporates water-repellent and UV-protection properties. Compared with oil-based stains, the water-borne formula lets the wood adjust naturally to moisture levels in the environment, contributing to better stability, the maker says. The product is available in 79 colors and in 4-ounce sample cans for testing. 877.726.7471.