Like Jim I did mine when the weather was cold. Based on the notes, the ideal weather to apply UCoatIT is 68 degrees. Even still I would wait a week before driving on it if you can. Better to be safe then sorry. After it cures it is one tough floor. I suggest having a towel on hand for days you dirve out of the rain into the garage. You will have puddles of water because the floor is sealed! The water will not seep into the floor. Now if I could just get my wife to use the towel