Minimum Clearance On Water Heater Roof Vent

Whenever we are installing a gas water heater building codes require that there should be a ventilator out of the room through the attic and out through the roof.

Minimum clearance on water heater roof vent.

6 minimum clearance from single wall vent pipe or flue vent connector to any combustible material. Single wall vents should have a minimum of 6 inches of clearance and double wall sometimes called a b vent should have 1 inch minimum clearance. 84 2 1m 3 note 5. Clearance above paved sidewalk or a paved driveway located on public property.

2 5 feet above the roof surface. Natural gas fireplaces gas fired furnaces boilers water heaters and wall or space heating applications. Table illustrations of the required space between a direct or side wall vent for a gas fired heating appliance and building windows doors corners gas meter air intakes sidewalks balconies. Hot water is an essential part of everyday life.

Materials and construction round type b gas vent 3 8 and oval 4 6. Type b vents ceiling floor wall clearances b vent clearances to combustibles clearance distances for a b vent to combustible materials in floors walls ceilings attics roofs. A direct vent installation only requires a 12 inch setback from the door or window. Distance required canada 1.

Aluminum 012 inner wall galvanized 018 outer wall. For gas fired water heater vents. This article series describes b vent metal chimneys used for gas fired appliances. Direct vent gas fireplace exhaust termination item clearance distance.

We discuss fire safety fire clearances and other gas appliance venting details for b vent chimneys. Roof pitch rise run in inches. Many people can t live without a water heater. Minimum clearance distance requirements for the exterior vent termination of a gas fireplace heater 8.

1 5 feet above the roof surface. Number 2 is a vent for an exhaust fan like those found in bathrooms and laundry rooms. Number 3 is a vent for an attic space called a roof vent or turtle vent. 1 0 foot above the roof surface 1 7 12 to 8 12.

Stack vents may give off sewer gas so they should not be located within 3 feet of an operable window. Note some modern high efficiency water heater may have pvc vents. 2 0 feet above the roof surface. They exhaust moist air to the outside.

If the water heater is installed above the door or window it needs 12 inches of clearance. Minimum height above the roof surface 1 flat to 7 12. Gas appliance direct vent clearances distances from direct gas vent to building features sidewall vent direct vent direct exhaust systems for gas fired heaters water heaters other appliances. Metal vents that are too close to wood or combustionable materials may cause the wood to burst into flames.

Table of rooftop chimney clearances for metal b vent chimneys flues.