how long after a fresh coating can the vehicle be exposed to rain? had a opticoat pro + put on and installer said it had been done the day prior but i took delivery 3/21/2018 and email from opticoat confirming application stated it was applied the same day. there was a rain storm that day. i haven't washed it or exposed it to any chemicals. Im getting conflicting info on the web as to if it was safe to drive and whether it will be negatively impacted by rain. thanks!