I see class A's going 80 or close to it almost every day on the NY thruways or PA Tpike, plenty of TTs and 5ers also. Perhaps it's not the potential catastrophe one is led to believe in threads such as this. If you go below 70 you may be the hazard a...
It sounds like the OP used self leveling Dicor on an Alpha Systems Superflex PVC membrane roof, which requires a specific sealant made by Alpha systems.