Signs of Roof Damage How to Spot Roof Damage Before Leaks Appear. Composition shingles: curling, loss of granulation, broken, damaged or missing shingles. Wood shingles/shakes: Mold or decay, splitting or curling. Flat roof: Obvious patches, cracks or tears, several blisters and/or wrinkles (also check patched areas from inside the attic) Signs of roof damage To prevent roof damage from becoming severe,...
