The 6 you describe should be just fine.
Vent stack height above roof ontario.
Roof pitch rise run in inches.
Vent pipes should extend to outdoors above the building roof and should terminate vertically not less than 6 above the roof surface nor more than 24 and must be at least 12 from any vertical surface such as a nearby sidewall.
All open vent pipes which extend through a roof shall be terminated at least number inches above the roof or number inches above the anticipated snow accumulation 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.
2 0 feet above the roof surface.
906 1 roof termination each vent pipe or stack shall extend through its flashing and shall terminate vertically not less than 6 inches 152 mm above the roof nor less than 1 foot 305 mm from a vertical surface.
You are letting air into the plumbing system of the house.
All open vent pipes that extend through a roof shall be terminated at least number inches 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.
Upc i 906 1 and 906 2.
Above the roof plumbing vent height.
D where the buildingis 4 storeys or less in height the vent pipe terminates above the roof of the building.
2 5 feet above the roof surface.
I have a main vent and a sink vent and both are only 6 high above the roof.
1 0 foot above the roof surface 1 7 12 to 8 12.
Minimum height above the roof surface 1 flat to 7 12.
The slope is about 4 high for every 12 horizontal.
The plumbing in your home is vented you can see the vent stack sticking up about 12 inches on your roof you might have more than one this stack vents sewer gases up into the air.
4 except for a fresh air inlet where a vent pipe is terminated in open air the terminal shall be located a not less than 1 000 mm above or not less than 3 5 m in any other direction from every air inlet openable window or door.