What is the purpose of a roof toilet vent and how does it contribute to the overall plumbing system of a building?

A roof toilet vent is designed to allow air to flow through the Plumbing system, preventing air pressure buildup and ensuring proper drainage. It helps to maintain the balance of air pressure in the pipes, preventing sewer gases from entering the building and allowing waste to flow smoothly through the plumbing system. In essence, the roof toilet vent helps to maintain the functionality and efficiency of the overall plumbing system in a building.