Installing Urethane Slurry Mortar System | Duraamen ...
To prepare the concrete surface grind it with a 30-grit diamond pad or shot blast it to achieve a concrete surface profile (CSP) of 4 to 5. After mixing the urethane mortar slurry, apply it and use a gauge rake to distribute it evenly across the surface at 1/8-inch thick. Then use a smoothing paddle to finish it.