Condo Unattached Carports

Has anyone had experience in/with these types of unattached carports? I am assuming that the tops of them have to be
cleaned. What are the consequences of not cleaning the tops of those various rows of carports?

Alex,

As Fred pointed out, cleaning for other than aesthetic value will depend if vegetation debris (leaves, branches, etc.) have accumulated.

As with any roof, if vegetation debris is allowed to accumulate, the vegetation debris will hold moisture and the moisture may decrease the life expectancy of the roof or cause damage that will require repair.

Alex,

If these carports have metal roofs you need to be sure that all the rainwater drains completely. If leaves and other debris are blocking the drains, water will sit on top of the roof and eventually rust through. Come to think of it, sitting pools of water on any kind of roof will cause trouble sooner or later.

In addition to vegetation, I'd worry about snowfall - don't know how much your area gets, but this winter (especially this one!), I drove past a few apartment communities where the roofs of the carports caved in because of all the snow.