Exhaust Vent Height Above Roof

Plumbing vent height above sloped roof i have a main vent and a sink vent and both are only 6 high above the roof.

Exhaust vent height above roof.

Vegetation must not be allowed to grow within 3 feet of an exhaust vent. Gas vents 12 inches 305 mm in size or smaller with listed caps shall be permitted to be terminated in accordance with figure g2427 6 5 provided that such vents are at least 8 feet 2438 mm from a vertical wall or similar obstruction. Per the 10 and 2 rule once you are at the level of the peak you only need to be 2 feet above it. Please note that this rule doesn t generally apply to pellet and gas vent systems.

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. How to vent a furnace in a roof. Standard z9 5 recommends a minimum stack height of 10 ft above the adjacent roof line an exhaust velocity v e of 3000 fpm and a stack height extending one stack diameter above any architectural screen. In all areas exhaust vents should be at least 1 foot above roof surface.

1 5 feet above the roof surface. Vents must be tall enough so burned gases exit above a roof line and. Roof pitch rise run in inches. This reduces the actual required height by 12 inches from our previous calculation of 64 inches.

2 5 feet above the roof surface. Exhaust vents must not be allowed to be obscured or hidden by vegetation. 2 0 feet above the roof surface. Minimum height above the roof surface 1 flat to 7 12.

The slope is about 4 high for every 12 horizontal. Table of rooftop chimney clearances for metal b vent chimneys flues. A gas vent shall terminate in accordance with one of the following. So 28 inches plus 24 inches is a chimney height of only 52 inches.

Exhaust vents must be protected against rain and equipped with back flow prevention features e g flap dampers. All gas furnaces must be vented to allow exhaust gases from the combustion process to escape.