SPECS & CODES —

2010 Florida Building Code, Plumbing
904.1 Roof extension.
All open vent pipes that extend through a roof shall be terminated at least 6 inches (152 mm) above the roof and not less than 2 inches (51 mm) above the invert of the emergency overflow, except that where a roof is to be used for any purpose other than weather protection, the vent extensions shall be run at least 7 feet (2134 mm) above the roof.

2010 Florida Building Code, Residential
CHAPTER 25
PLUMBING ADMINISTRATION
P3103.1 Roof extension.
All open vent pipes which extend through a roof shall be terminated at least 6 inches (152 mm) above the roof except that where a roof is to be used for any purpose other than weather protection, the vent extensions shall be run at least 7 feet (2134 mm) above the roof.

International Plumbing Code (IPC)

The International Plumbing Code (IPC) requires plumbing vent pipes to extend vertically at least 152 mm (6 in.) above a roof, per Section 905.5, “Vent Connections and Grades.”
Additionally, vent pipes must be at least 305 mm (12 in.) away from a vertical surface. In
locations known for snow, the vent pipe needs to be at least 51 mm (2 in.) in diameter and 305 mm inside an insulated area of a building before extending through the roof. Vents in these locations also should extend 610 mm (24 in.) above a roof.

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