Flashing for Wood Burning Stoves

Materials

• Flashing for wood stoves must meet certain criteria since a hot stovepipe can reach 400 degrees Fahrenheit when in use. Lead is often used in stove flashing, as is stainless steel. A storm collar is also used instead of a boot such as is used for vent pipes, as it seals the seams without the use of heat-sensitive materials. The storm collar keeps moisture from leaking inside the roof and causing damage.

Pipe

• In addition to the correct flashing and storm collar, use the correct diameter pipe for your wood stove. This is usually insulated or triple wall pipe in 24-gauge. Always consult with your manual or a wood stove dealer for the optimum diameter pipe, as needs vary from stove to stove. Fasten all pipe sections with sheet metal screws. When putting lengths of stovepipe together, always have the crimped end pointing downward to assist with the containment of creosote.

Listed

• When choosing your wood stove chimney components, be sure they are listed. Listed means they have been tested to meet all safety standards by an independent lab with no connection to the manufacturer.

Existing Chimneys

• Should you opt for an existing chimney that is built of brick or stone, you can forgo the flashing. You must, however, thoroughly inspect the chimney and line it with stainless steel if it is not already lined with either steel or tile. If the chimney is not sound and free of cracks and defects, avoid the temptation to use it, as it could prove to be a deadly fire hazard.