The answer to 'what causes gutter guards' is that gutter guards are installed on gutters to prevent debris like leaves, twigs, and other materials from clogging the gutters. Gutter guards help maintain the proper flow of water through the gutters, preventing water damage to the home's foundation and exterior. They are designed to allow water to pass through while keeping out larger debris that can accumulate and cause clogs.
Gutter guards come in a variety of materials, including mesh, screens, and covers, and can be installed on new or existing gutters. They are a popular solution for homeowners who want to reduce the frequency of gutter cleaning and maintenance.