The answer to 'downspouts curling shingles' is that downspouts that are not properly installed or maintained can cause shingles to curl and buckle. This happens when water from the downspout is not directed away from the roof effectively, leading to excessive moisture buildup that damages the shingles.
Common symptoms include shingles that are lifting, curling at the edges, or developing bumps and ridges. This can lead to leaks, rot, and further deterioration of the roof. The solution is to ensure downspouts are securely attached, angled away from the home, and directing water at least 6 feet from the foundation. Homeowners may be able to adjust or replace downspouts themselves, but for more complex issues it's best to call a professional roofer.