Every roof works as a system of layers, and the shingles or panels on top are only the part you can see. Under them sit underlayment, decking, flashing at every wall, chimney and valley, boots around the pipes and vents along the ridge, and a leak usually starts where one of those pieces fails. Good roof repair in Madison starts by tracing the water back to where it gets in, since water runs along rafters and decking before it shows up inside.
Roof trouble in Madison tends to come from one of three places: weather, age or a detail that was done wrong when the roof went on. Wind lifts tabs and breaks the sealant strips, hail knocks granules loose and leaves soft spots, and falling branches puncture the deck. Age shows up as curling, cracking, bald shingles and dried out pipe boots, while bad details show up as leaks at flashing, valleys and skylights no matter how new the roof is.
It helps to know a little about the roof before you talk to a roofing contractor. Note where you see water or stains inside, whether it shows up in every rain or only in wind driven storms, and roughly how old the roof is. Say what kind of roof it is, whether asphalt shingle, metal, tile, slate, cedar or a flat roof, since the repair depends on the material. You do not need to know the cause, only what you are seeing.