Patent ID: 7882670

Claim:
A roof ventilation apparatus for installation on a sloped roof having a roof exhaust source therethrough, the roof ventilation apparatus comprising: a base plate including: a substantially planar attachment portion; and an aperture located within the attachment portion; the base plate further having a collar circumscribing the aperture; the collar defining a cylindrical channel; the cylindrical channel having a generally uniform diameter; the collar extending perpendicularly from the substantially planar attachment portion; the collar extending upwardly from the sloped roof when the base plate is operatively installed around the roof exhaust source; a vent cap having a dome and a mounting flange; the dome including a water shedding cover and further including side walls extending downwardly from the water shedding cover, the side walls including at least one ventilation port; and the mounting flange being attached to and extending outwardly from the side walls of the dome and arranged and configured to entirely cover the base plate when the vent cap is installed on the roof; wherein the vent cap and the base plate cooperate to permit air moving upward from the roof exhaust source and through the collar to exit the vent cap through the at least one ventilation port; wherein the collar intercepting any water which reaches the base plate through the at least one ventilation port.