The answer to 'gutter guards curling' is that gutter guards can sometimes curl or become misshapen over time due to a few common causes. This can happen if the guards are made of low-quality materials that are not designed to withstand the elements, or if they were not properly installed. Curling gutter guards can lead to water leaks, clogs, and other problems.
Some of the main reasons gutter guards may curl include exposure to UV rays, extreme temperatures, or physical damage. Over time, the materials in the guards can become brittle and start to warp or curl away from the gutters. This creates gaps that allow debris and water to get through, defeating the purpose of the guards.