If the flat roof or the location of the vent on the flat roof will not have any chances of greater than 2 of puddling then some of the larger gooseneck vents will work fine as they usually incorporate a 2 to 3 vertical riser within the gooseneck that is sealed with silicone to the flashing pad.
Vent termination above flat roof.
Flat roof model 486u imc 504 4 irc 1502 3 compliant model djk486u made in.
Manufacturers recommendations usually take precedence over local building codes but you won t know for sure which takes precedence or what those manufacturers recommendations are.
Horizontally through the building wall at a building gable end wall first choice or if the gable end is too distant terminate the bath vent down through a building soffit at the roof eaves.
802 6 2 termination requirements a gas vent shall terminate in accordance with one of the following.
Gas vents that are 12 inches 305 mm or less in size and located not less than 8 feet 2438 mm from a vertical wall or similar obstruction shall terminate above the roof in accordance with figure 802 6 2 and table 802 6 2.
Non restrictive dryer roof vent termination.
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.
Upc i 906 1 and 906 2.
The 2 10 rule states that combustion vents should terminate at least 2 feet above any part of the roof within 10 feet.
Collar 1 25 above and 3 below plate and positioned to the rear curb115 top view 1 25 11 50 wood frame sold separately insulation metal base 19 50.