Gas vent pipes must terminate at least how high above roof pitches up to 6/12?

Gas vent pipes are required to terminate at least 1 foot above the roof for pitches up to 6/12, according to various building codes and standards. This requirement is in place to ensure that the venting system functions properly and safely. By terminating the vent pipe at this height, it minimizes the risk of exhaust gases being reintroduced into the building through windows or other openings, which is crucial for maintaining indoor air quality and preventing hazardous conditions.

The elevation provides adequate clearance for the gases to disperse, taking into account the potential for wind effects that could push exhaust downwards. For pitches steeper than 6/12, the height requirements typically increase to prevent similar issues associated with wind and drainage from the roof. Thus, knowing the correct termination height is vital for plumbing safety and functionality.