The answer to 'why is my downspouts clogged gutters' is that a clogged downspout is often the main cause of clogged gutters. Debris like leaves, twigs, and dirt can accumulate in the downspout, preventing water from draining properly and causing backups in the gutter system.
Some common symptoms of a clogged downspout include water overflowing the gutters, gutters sagging under the weight of standing water, and water damage to the home's exterior or foundation. To fix this, you'll need to clear the downspout of any blockages. This is usually a DIY task, but if the downspout is difficult to access or the clog is severe, it's best to call a professional roofing contractor for help.