How do I know I need a replacement and not a repair?
Repair makes sense when damage is limited to one area and the rest of the roof is in decent shape. Replacement makes sense when problems are spread across the roof. Signs that point toward replacement include shingles that curl, crack or lose granules over large areas, repeated leaks in different places, daylight showing in the attic, and a sagging deck.
Age matters too. Many asphalt shingle roofs are planned around twenty to thirty years, but Chicago freeze and thaw cycles, summer heat and wind off the lake can shorten that, especially where attic ventilation is poor. If you are not sure, a roof inspection gives you a written picture of the roof before you spend serious money. For a single leak or a few lifted shingles, roof repair may be the sensible first step.

