Yes - water actually seems to harden it. I actually always use a brush and it flows out nice. You should top coat it while its curing, 1st 30 min to 1 hour. "POR-15 is cured and strengthened by exposure to moisture and will dry faster under extreme humidity, but moderate to dry atmospheric conditions are most desirable when applying this product,because extreme humidity may cause an immediate surface cure, trapping carbon dioxide gas below the surface. When this happens, bubbling may occur. Extreme humidity at the time of application may also interfere with proper adhesion of the POR-15 coating to metal because it's almost impossible to keep metal dry under such conditions. Apply second coat when first coat is dry to touch with slight "finger-drag" remaining." Glad you were able to save your paint!