What is the minimum weight requirement for sheet lead used for vent pipe flashing?

The minimum weight requirement for sheet lead used for vent pipe flashing is 2 pounds per square foot. This specification is based on ensuring adequate durability and effectiveness in preventing water penetration around the vent pipes. The weight of the lead provides sufficient resistance to wind uplift, as well as the ability to conform to the shape of the pipes and the roofing material. This standard is critical in maintaining the integrity of roofing systems and preventing leaks, ensuring that the flashing can withstand environmental elements over time. The options suggesting lesser weights may not offer the necessary strength and longevity required in roofing applications, which is why they do not meet the established standards.