Stainless Steel Chimney Liner Kit
Stainless steel chimney liner kits are required for any wood burning or wood pellet burning stove or appliance.

When it comes to relining your chimney, all of the options can be overwhelming. There are so many choices out there, from the type of metal flue liner you choose to the thickness and rigidity of the pipe. It is difficult to decide exactly what option is best for you. On the market today are kits, stainless steel chimney liner kits and aluminum chimney liner kits designed to make the process a little bit easier, but even these can be difficult to understand. These kits most often come with all of the pieces needed to properly line a chimney including insulation and a chimney cap.

There are two main types of metal pipe you can line your chimney with, aluminum and stainless steel. There are many alloys of stainless steel, but we will get into that later. When lining wood burning stoves or wood burning fireplaces, you must use stainless steel. Almost all stainless steel liners that have been UL listed require insulation in the form of a blanket or poured insulation material, and it is recommended that aluminum liners be insulated as well. Aluminum is not appropriate for wood burning appliances or fireplaces because of the temperatures that the fires reach when burning wood.

Chimney Flue Liner Insulation Kit
Metal chimney liner’s efficiencies are improved when insulated.

316 stainless steel pipe is a Ti-alloy of stainless steel that can be used to vent wood, pellet, coal, oil, and noncondensing gas burning appliances or fireplaces. This alloy is easy to handle and installs more quickly than regular stainless steel pipe. It is also known for its corrosion resistance in acidic environments and its ability to resist high heat corrosion.

Aluminum is the ideal gas chimney liner. It has been the material of choice for venting gas fired appliances for more than half a century. You want to make sure to purchase a liner that is UL listed. This means it has been put up to standard tests and passed. Many liners come with a lifetime warranty when installed by a professional when installed according to the manufacturers instructions.

Clay Lamb

Clay Lamb is a Cincinnati Chimney Sweep contractor and the executive producer of the YouTube channel, podcast, and blog Ask the Chimney Sweep. He is also an award-winning educator and public speaker in the chimney and fireplace industry.….Educational Videos….American Chimney Cincinnati, OH

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Clay Lamb

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8 thoughts on “Stainless Steel Chimney Liners vs. Aluminum Chimney Liner

  1. Can aluminum chimney liners be used in a clay tile flue that was previously an oil boiler system, but has been a gas boiler system for the past 40 years? A contractor told me that because an oil fired boiler was used previously that I could not use an aluminum liner! Another contractor said I could use an aluminum liner? Who is correct?

  2. I can’t be the judge in the matter of the two opinions, but what I will say is “What do the boiler MFG say in their instruction manual in regards to their venting requirements.” This is important in deciding what to do because all of this equipment is UL listed to specific standards. I would no use an aluminum liner with a boiler nor would I put aluminum liner in any liner that was used for oil at any time. Also be very cautious of the grade of stainless steel that would be used on the interior. Be sure that the stainless steel pipe has specific properties that resist acetic oil bi-products. Install according to the manufactures instructions ONLY, not opinions.

  3. If I buy a stainless steel chimney liner kit from home depot, what else would I need to be able to use it for a wood stove?

  4. Our pellet stove was installed with an alumunam pipe through the chimney. Is this safe.? Im guessing it should be stainless steal, as the contract says they would install with stainless steal. We didnt realize it was aluminum until service person came out to try to resolve our problem with the overwhelming smoke smell. He just made excuses. We are so frustrated. We cant use the stove do to the smoke smell and fear of danger from useing aluminum pipe. Thank you, linda

  5. Because I can not be on your particular job installation myself, I try never to assume that I can diagnose all of my readers’ problems and questions. I’m not sure of the quality or the content of the pipe, I would first start by looking for the manufacturers tag somewhere on that unit. I would contact their technical department and supply them with pictures and see if it lines up with their installation specifications. Most manufacturer’s want their products installed properly to protect their customers as well to prevent exposures to their own liabilities.

  6. How do I tell the difference between a Stainless Steel Chimney Liner and an Aluminum Liner. My installer said it was stainless steel but another company says it is Aluminum. It is not magnetic does this prove it is not stainless steel?

  7. No. I think its worth having a certified chimney sweep to come out there and love at it for you , have a third party as extra security. there may be something stamped on there that says this, and there should be some sort of warranty provided by your manufacturer that should require yearly inspection. Burn safe, Clay Lamb.

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