A roof pitch of 6/12 (26.5°) or less is considered easily walkable, and no extra precautions are required. A roof of pitch 7/12 (30°) is manageable, but caution should be taken. Pitches between 8/12 and 10/12 (33°-40°) are also considered walkable, but it is not advisable and, if you have to walk on these roofs, extreme caution should be taken. Roofs any steeper than this are considered not walkable, and special equipment or scaffolding is required. Please do not take risks on roofs, as the fall can be fatal. Read more