The canopy is the operative detail. Mature hardwoods over Doty Island and through the older neighborhoods keep whole roof slopes in shade for most of the day, and a shaded north slope stays damp. That is where moss and algae establish, and moss holds water against the shingle mat and takes years off it. It is also where mildew grows on siding and quietly ruins the next paint job.
Those same trees drop limbs. A significant share of the roof repairs we do in Neenah start with a branch rather than the weather.
The East Wisconsin Avenue homes and the older properties near Riverside Park and Kimberly Point are substantial buildings with detail worth preserving: deep trim, real wood, and roofs with enough pitch and complexity that flashing them takes time.