Missing, loose or worn shingles or tile
Split or worn wood shingles
Discoloration of roofing shingles or panels
Rust or loose seams on metal roofs
Granules from shingles collecting in gutters
Loose flashing in valleys or around chimneys, skylights and vents
Blocked roof vents
Mold growth
Stains or dampness on underside of roof decking
Loose or leaking gutters