signs of a bad roofer

https://online-wiki.win/index.php/8_Roofing_Contractor_Red_Flags_That_Could_Cost_You_Thousands

You see patches of curled or missing shingles, water stains spreading on your ceiling, or granules gathering in the gutters. Maybe nails are popping up, or there's a sagging spot where the deck feels spongy. A roofer who leaves gaps around vents, uses mismatched materials, or skips drip edge flashing is cutting corners. Trust your gut—if sunlight peeks through the attic or moss grows unchecked, that job wasn't done right.