Be sure your stove is made of sturdy, suitable material, such as cast iron or steel. Look for stoves listed by Underwriters Laboratories (UL) or other recognized testing laboratories.
- The horizontal section of the uninsulated stove pipe should not be more than three-quarters as long as that section of the flue above the point at which the pipe and the flue connect.
- National Fire Protection Association (NFPA) standards call for a 36-inch clearance between a room heater stove and any combustible wall or ceiling surface. If the length of the horizontal portion of the stove pipe won't permit that much clearance, protect the combustible wall with a panel of some protective material, such as sheet metal, spaced at least one inch from the wall.
- Stoves having less than two inches of ventilated open space beneath the fire chamber or base of the unit should never be installed on combustible floors or have any combustible material beneath them unless permitted by their listing.
Galvanized Sheet Metal Gauge No.
Diameter of Stove Pipe in Inches
less than 6
6 to 10
10 to (not including) 16
If a wood burning stove has an automatic draft regulator controlled by a thermostat, the manufacturer's instructions for installing it must be carefully followed. Alternately, a manually operated damper can be installed on the pipe near the stove. This damper should not obstruct more than 80 percent of the pipe area.