Since it will be protection from snow and rain. You can use a roofing roof for a small angle of roof = 5-10 degrees. The roof that was covered with slate = 20 degrees tilted, tile = 25-35 degrees.
Since it will be protection from snow and rain. You can use a roofing roof for a small angle of roof = 5-10 degrees. The roof that was covered with slate = 20 degrees tilted, tile = 25-35 degrees.