The answer to 'why is my gutter guards sagging' is that the most common causes are improper installation, wear and tear over time, or excessive weight from debris buildup. Gutter guards can sag if they were not properly secured to the gutter, the fasteners have come loose, or the guards are not sturdy enough to support the weight. Additionally, leaves, twigs, and other debris accumulating on the guards can cause them to bow and sag over time.
If the sagging is minor, you may be able to fix it yourself by tightening the fasteners or reinforcing the guards. However, for more significant sagging or if the guards are damaged, it's best to call a professional roofing or gutter contractor to inspect and replace the guards as needed. They can ensure the new guards are installed correctly and securely to prevent future sagging.