Roof vent base plate and installation methods

A base plate for use with a vent cap for prevention of roof leaks caused by water entering into a roof exhaust source, the base plate comprising:

• a substantially planar attachment portion;
• an aperture located within the attachment portion;
• the substantially planar attachment plate including a bottom surface, the bottom surface having an adhesive layer;
• wherein the adhesive layer includes a removable protectant sheet;
• the base plate further having a collar circumscribing the aperture;
• the collar defining a cylindrical channel;
• the cylindrical channel being of a generally uniform diameter;
• the collar extending perpendicularly from the substantially planar attachment portion;
• and
• the collar extending upwardly when the attachment portion is operatively installed around the roof exhaust source.

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.

A method of installing a base plate for preventing vent cap leaks from entering into a roof exhaust source, the method comprising the steps of:

• providing a roof deck, the roof deck having a roof exhaust source;
• providing a base plate having a substantially planar attachment portion, an aperture located within the substantially planar attachment portion and a collar circumscribing the aperture;
• securing the base plate to the roof deck;
• the aperture surrounding the roof exhaust source and the collar extending upward therefrom;
• securing roofing materials over at least a portion of the substantially planar attachment portion;
• fitting a vent cap over the base plate;
• and
• securing roofing materials over at least a portion of the vent cap.