Home Page - TRAVELUS
http://travelus.info/roof-pitch-for-shingles/what-is-the-minimum-pitch-slope-of-an-asphalt-shingle-roof-roof-pitch-for-shingles-pitch-is-measured-in-inches-of-vertical-rise-of-the-roof-over-one-foot-inches-of-horizontal-run-so-a-4-pitch-roof-ris/