signs of a bad roofer 4

https://ace-wiki.win/index.php/How_to_Vet_a_Roofing_Company:_A_Straightforward_Guide_for_Homeowners

If you see roofing nails scattered in the yard or granules from shingles piling up in the gutters, that's your first clue. Missing shingles, uneven lines, or visible black felt are sure signs they rushed the job. Inside, check the attic for light peeking through—it should be dark as a cave. Also, watch for blistering or curling edges; a flat, smooth surface is what you want. A shoddy roofer leaves you with leaks and regrets, not a solid roof over your head.