Roof Vents and Penetrations Flashcards
What are the most common failures on roofing systems?
Failures associated with components projecting through the roof covering, often due to damaged or incorrectly re-installed flashings during roof re-covering.
What are the two main types of plumbing vent flashing used in different climates?
Northern climates: Neoprene or metal boot.
Southern states (e.g., Florida): Lead flashing, which also protects the plastic vent pipe from UV damage.
What is a stack vent, and where is it typically observed?
A stack vent is the extension of a soil or waste stack above the highest horizontal drain connected to the stack.
It is typically seen penetrating the sloped roof surface and may also be visible in an unfinished attic.
Why are skylights prone to moisture penetration?
Skylights often leak when the roof has been re-covered, as the original flashing may have been damaged or improperly re-installed.
