How far must the vent pipe of an LP Gas space heater be extended above the roof crest?

The requirement for how far the vent pipe of an LP Gas space heater must extend above the roof crest is typically established to ensure proper venting and to prevent the escape of harmful gases into the living environment. Extending the vent pipe a minimum of two feet above the roof level helps to prevent issues such as downdrafts, which could introduce combustion products back into the building. This height provides sufficient clearance to enhance the efficiency of the venting system and reduce the likelihood of blockages caused by roof structures or nearby obstructions.

Additionally, local building codes and safety regulations often specify this height to ensure that installations are safe and effective. The two-foot requirement strikes a balance between being high enough to mitigate potential hazards while not being excessively tall, which could complicate maintenance or lead to other structural issues.