An external wood burning stove flue, also known as an outdoor flue or chimney, is a critical component of wood stove installations where the stove is located outside, like in a porch or covered patio. This article provides clear and concise information for both technical and non-technical audiences about external wood burning stove flues.
Understanding the External Wood Burning Stove Flue
An external flue is designed to vent the smoke and combustion byproducts produced by a wood burning stove to the outdoors. The principles governing its construction and functionality are similar to those of an indoor chimney or flue. Here’s what you need to know:
Materials: External flues are typically made of stainless steel or another durable, weather-resistant material. This ensures the flue’s longevity and ability to withstand outdoor conditions.
Clearances: Just like indoor flues, outdoor flues must maintain clearances from combustible materials like walls, roofs, and overhangs. Always adhere to local building codes and manufacturer recommendations.
Components: An external flue comprises sections of flue pipe, typically insulated to improve draft and reduce creosote buildup. It is often extended upward through a chimney cap to prevent rain and debris from entering.
Installation Steps for an External Flue
Installing an external flue for your wood burning stove is a precise process. Here’s a straightforward guide:
Plan the Route: Determine the path the external flue will take. Ensure it complies with clearances and local regulations.
Select the Flue Material: Choose a weather-resistant material like stainless steel for the flue. Ensure all components are designed for outdoor use.
Connect the Stovepipe: Attach the stovepipe to your wood stove’s flue collar. Follow manufacturer guidelines for clearances and secure connections.
Connect the External Flue Sections: Connect the external flue sections, ensuring they are sealed tightly to prevent leaks.
Extend the Flue: Extend the flue above the roofline using additional sections. This minimizes the risk of downdrafts and maximizes the efficiency of the flue.
Install a Chimney Cap: Place a chimney cap at the top of the flue to keep out rain, animals, and debris.
Adhere to Local Regulations: Always comply with local building codes and regulations throughout the installation process.
Benefits of an External Flue
Using an external flue for your wood burning stove offers several advantages:
Reduced Indoor Smoke: An external flue eliminates the need for indoor chimney runs, which can reduce the risk of indoor smoke or odors.
Increased Safety: Outdoor flues minimize the risk of fire hazards associated with indoor installations.
Enhanced Efficiency: With the flue located outside, the wood stove can operate more efficiently and draw better.
Conclusion
An external wood burning stove flue is a practical solution for outdoor wood stove installations. By following the guidelines for its construction and adhering to local regulations, you can enjoy the warmth and ambiance of a wood stove in your outdoor space safely and efficiently.