How to tell if a roof leak is coming from flashing or shingles (Saint Paul examples, 10-photo guide)
If the leak shows up near chimneys, vent pipes, roof-to-wall lines, or valleys, it’s often a roof leak flashing problem (gaps, failed sealant, loose metal). If it shows up under open roof field, especially after wind, hail, or freeze-thaw, shingles are the usual culprit (cracks, missing tabs, nail pops). Photos from inside and the attic…
