Mix with Classic Series Acrylic Urethane Activator 3:1 by volume
Always choose the correct speed activator based on temperature, air flow, size of the job and other conditions. In general, UMA27 is designed for use when air temperature is below 80°F. USA28 is designed for larger jobs, or work in temperatures above 80°F. Though not recommended, some reduction may help with flow and leveling, especially in warmer conditions. Be sure to choose only a high-quality urethane-grade reducer (and select the appropriate speed for the conditions) and reduce the mixture by no more than 10%. Using the correct speed activator and reducer will reduce the risk of application errors including runs, orange peel, die back, wrinkling, solvent pop and more.