An assembly, and method for constructing the assembly, to aid in the proper installation of shingles by providing panels of shingles and assembly guides that when followed, result in the installation of shingles that meet keyway width requirements, keyway alignment requirements, provide an aesthetically pleasing distribution of the shingles, and provides adequate ventilation. The valve plates are connected to a common valve shaft for rotation between an open position and a closed position. Positioned on the reduced or active area is a silicon carbide sensor.