the spraying time depends on various things mate.i.e. how many coats the particular paint takes 2 cover etc. actualy spraying can take as little as 2hours. the prep and stripping takes the longest to do, 4 a respray on a car good condition ul b looking around 2 weeks work, 4 a full respray etc anything up to a month work involved as in windows,lights,engines th elot out