Exhaust Vent Termination Above Flat Roof

I am interested in learning if there is guidance or code that would cover venting a bath fan straight up through a flat roof.

Exhaust vent termination above flat roof.

Stack vents may give off sewer gas so they should not be located within 3 feet of an operable window. Shorter duct runs created by venting the dryer straight through the roof can improve drying efficiency and lessen lint buildup. We also review recommended clearance distances between the bath exhaust duct end opening and other building features such as a gas fired. 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 gas vents that are over 12 inches 305 mm in size or are located less than 8 feet 2438 mm from a.

Mesh roll ridge vent in black nail gun version when installed as part of a properly balanced when installed as part of a properly balanced attic ventilation system gaf cobra exhaust vent is a shingle over exhaust vent installed at the roof ridge that helps exhaust excess heat and moisture from your attic. It also indicates that on sloped roof the termination should be. Number 2 is a vent for an exhaust fan like those found in bathrooms and laundry rooms. Venting to a flat roof.

Number 3 is a vent for an attic space called a roof vent or turtle vent. Our state s weatherization field guide indicates that vent terminations shall not be allowed on flat roofs. 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. A gas vent shall terminate in accordance with one of the following.

Unlike the vents shown above left the dryerjack affects airflow by less than 01 water column inches of pressure. Dryerjacks are the first roof vents designed to meet the more stringent venting requirements of dryer exhaust systems. It comes on an easy to install flexible mesh. Kitchen exhaust vents available in high quality copper galvanized or stainless steel side wall vents rectangular copper rectangular wall vent 3 1 4 h x 10 w 85 00.

This article describes the proper closure or termination of bathroom exhaust fans fan ducts to prevent drafts heat loss leaks or even bird or rodent pest entry to the building. Cobra exhaust vent 10 5 in. Until now however there were no roof terminations that met all of the stringent dryer venting requirements. They exhaust moist air to the outside.

Vent your bath and kitchen exhaust fans through the roof through a special roof hood. The new dryerjack is engineered specifically for dryers. Bathroom exhaust fan termination fittings locations clearance distances. They meet or exceed all code requirements and.

My interpretation is that you are not allowed to place a fan vent termination on a flat roof. Options are not always clear.