THE PITCH HOPPER 32" Black series Roof Install/Repair The Pitch Hopper® is designed to allow a temporary working surface on asphalt roof surfaces for roof pitches ranging from ''walking pitch'' to 12:12. Our superior grip surface uses friction force to keep The Pitch Hopper® in place, and our unique wedge shape features one side for lower pitch and one steeper pitch allowing for easy usage and maximum comfortability.