The epoxy modified, water-based Dura-Plate 2300 concrete resurfacing coating from Sherwin-Williams Protective & Marine Coatings provides a hard, durable surface that minimizes the potential for pin-holing and outgassing. The coating can be dry to the touch in three to four hours and cures for immersion in 12 hours at 75 degrees Fahrenheit. 800/524-5979; www.sherwin.com/protective.