The SE doesn’t have the shiny roof, but I guess like most paint finishes, it’ll depend on what protection you have in place…get a good protective layer on it and the maintenance should be relatively simple. Couple of coats of good quality wax, or perhaps professionally coated (can be costly) will really help in the longer term.
Also, try to keep some preventative measures in the car - bird poo spray / wipes, as that stuff is brutal if left on for any length of time.