TotalBoat Topside Primer is a very quick drying primer material that generally will only self-level for a few seconds. For proper application, only apply a very thin film of TotalBoat Topside primer. It should have sufficient self leveling for thin film application, but issues may arise if the primer is applied is too thick.
It is very important to use the appropriate roller cover for rolling applications, or the appropriate brush for brushing applications. TotalBoat Special Brushing Thinner 100 can promote better self-leveling properties for brush and roll applications, but care should be taken not to add too much thinner. For spray applications, run a test to get the appropriate fan of spray, and spray at a speed that allows the right amount of primer onto the surface. Adjust the percentage of thinner based upon the environmental conditions until the primer sprays evenly, with proper atomization and fan.