Four roofs on one house, and the pitch problem
The most common serious finding we make on older Plainfield homes is shingles on a slope that was never rated for them. Asphalt shingles have a minimum slope in their installation instructions, they are marginal on shallow slopes even with the extra underlayment the manufacturer requires there, and they do not work at all on a genuinely flat run. Mid-century rear additions, sunrooms, carports and porch roofs along the old road were routinely shingled anyway because it matched the house. Those sections leak on a schedule no amount of careful nailing changes, and the honest fix is a different covering on that section rather than a fourth round of repair.
Where the additions meet the original house you get the second recurring problem: a change in pitch, a change in height, or both. Every one of those transitions needs real flashing and, where a lower roof runs into a taller wall, real step flashing with a kick-out at the bottom. What we usually find instead is a strip of metal and a lot of sealant applied by whoever was cheapest in a decade nobody remembers.
The older core also brings plank decking, layer counts higher than anyone expects, and chimneys without crickets. None of that is unusual for pre-war Indiana housing. What matters is that it is established during the inspection and written into the proposal, with a per-board price agreed before any decking is touched.
The newer half of Plainfield is the opposite job. Those subdivisions sit on open former farmland with a clean run of wind from the west, young trees, and the standard build-era perimeter defects: substituted starter courses, thin builder pipe boots, and ridge vents sharing an attic with open gable vents. Large, simple, uncomplicated roofs where all the value is in getting the edges and the ventilation right.
The White Lick Creek corridor and the older streets near Hummel Park carry mature canopy, which brings the debris and valley problem that comes with it. Half a mile away in a 2015 subdivision that concern does not exist at all. It is a small town with genuinely different roofing conditions inside it, which is why we would rather look than assume.
One thing that applies across both halves: Plainfield sits in the same spring storm corridor as the rest of the western metro, and weather arrives here before it reaches Marion County. Wind and hail damage is routine and worth documenting when it happens rather than when it starts leaking.