Open vent pipes that extend through a roof shall be terminated at least 6 inches 152 mm above the roof or 6 inches 152 mm above the anticipated snow accumulation whichever is greater except that where a roof is to be used for any purpose other than weather protection the vent extension shall be run at least 7 feet 2134 mm above the roof.
How high should a vent stick out the roof.
Notice that we use the words any roof surface or an part of a structure in this explanation.
That means that when there is mechanical equipment on the roof sun decks you name it the plumbing vents need to extend up above the roof 7 feet.
Does anyone know what legal height requirements there are for vent pipes from memory i m pretty sure that it must only be a minimum of 300mm above the gutters that s to ensure storm water does not get into the sewer system.
Some builders recommend a minimum of 30 cm 12 inches.
If the pipe is farther than 10 feet from the roof peak it must be 2 feet above the highest point of the roof within 10 feet.
The top of the flue opening termination of the chimney should be a minimum of 2 feet above any part of a structure within ten feet.
In other words the highest point within a 10 foot circle of the pipe.
For a gas vent or type l vent this height must be 2 ft 0 61m or more.
Set the collar with the wide flange at the bottom on the surface of the roof.
Extension of vent pipes through a roof shall be terminated not less than 12 inches above it.
I d maybe try to tie that existing 2 vent into your new 3.
Plumbing books vary in their advice.
Match the vent pipe to the furnace maker s recommendations either sheet metal or vinyl.
Recommended minimums make sure the stack to protrude a minimum of 15 cm 6 inches from the roof.
Vertical blue arrow in our sketch.
Extend the vent pipe at least.
If a roof is to be used for any purpose other than weather protection the vent shall be extended at least seven 7 feet above the roof.
Extensions of vent pipes through a roof shall be terminated at least 12 inches above such roof unless a roof is to be used for any purpose other than weather protection.
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