To what elevation must a gas appliance vent terminate above the roof?

The correct elevation for a gas appliance vent termination above the roof is determined by safety and performance standards. In this case, the requirement is that the vent must terminate at least 3 feet above the highest point of the roof that is within a distance of 10 feet horizontally from the termination point. This elevation helps ensure that exhaust gases are effectively dispersed and do not re-enter the building or create a hazard for nearby structures or occupants.

Maintaining this height reduces the chance of building up flammable gases and promotes proper ventilation, which is essential for the safe operation of gas appliances. Additionally, it helps avoid issues related to downdrafts or obstruction by roof features such as chimneys or vents.

Understanding this guideline is crucial for compliance with building codes and best practices, ensuring that gas appliances function safely and efficiently.