Polyaspartic polyureas make waterproof coatings that can be applied with paint rollers, sprayers, or paint brushes. They are easy to use and have four times the abrasive wear resistance of urethanes. Flexmar Sealer can be installed at temperatures as low as -20° F and as high as 140° F, can withstand temperatures as high as 350° F when cured, are UV stable producing water clear coatings, have excellent wetting and penetrating characteristics, which means they form very good bonds to concrete, won't blush or whiten, and they protect concrete from stains, fats and oils, and mild acids. The product self primes and cures to handle traffic in approximately an hour's time. Flexmar Coatings. 724-339-1442. www.flexmarcoatings.com.