A roof cricket, also called a saddle, is a triangular structure installed behind a chimney, skylight, or other roof protrusion to help divert water and keep it from pooling. They also help prevent debris like leaves and sticks from building up. If water is allowed to collect in these areas, it can lead to leaks and structural problems.

Building codes may require these to be installed in certain applications. Regardless, it’s an effective option for better water shedding insurance.