Chimney Cleaning Logs

Chimney cleaning logs have become a popular topic for many homeowners searching for an easy way to clean a dirty chimney and remove dangerous creosote buildup.

However, what many people don't realize is these products are not a substitute for a mechanical cleaning or an inspection by a certified professional.

How do the logs work?  

The manufacture claims the logs contain special additives that adhere to creosote inside your chimney as the log burns. 

These substances are carried up the flue by hot gasses where they are deposited throughout your chimney claiming to treat, reduce and fight dangerous creosote buildup.

In theory, over a duration of 1 to 2 weeks the additives will attack the creosote causing it to become more brittle and either fall from the flue or become easier to brush away. 

How Does Creosote Form?

When you light a fire, unburnt gasses from the combustion process travel up your chimney where they are released into the outside air.  

Unfortunately, as the warm gasses travel up the chimney they come into contact with the colder chimney flue causing the unburnt particles to condense and adhere to the inside of the flue.  

This formation is known as creosote.  Over time the creosote can build up to a thickness that's very dangerous, allowing the possibility of a chimney fire.

Should You Use Chimney Cleaning Logs?

When using one of these products it's important to read all the instructions and understand the products limitations.  For example, fine print such as "does not take the place of inspection and professional cleaning" should not be overlooked.

It's also important to inspect the top of the damper and the smoke shelf for fallen creosote that may become concentrated in these areas after using the product.  The debris can be removed with a brush or an appropriate vacuum.    

Creosote Sweeping Log

Many people, including myself, have spent the money and purchased a product such as a Chimney Sweeping Log hoping it will play a small role in reducing creosote buildup.

To the best of my knowledge there is no evidence that states the product does not work and you can read the multiple reviews from people who are very satisfied after many years of using them.

As stated before, there is no substitute for burning seasoned firewood.   Proper burning techniques such as preventing a low temperature smoldering fire, and a mechanical cleaning play a vital role in a safe burning fire.

Plus, at a minimum you should have a certified professional inspect and clean your chimney at least once a year.

Overall

Are chimney cleaning logs worth the money?  I believe the logs can offer two things....piece of mind and the possibly of reducing creosote or making existing creosote easier to mechanically clean and remove.

However, if you expect to purchase a cleaning log, never read the fine print or follow the manufactures instructions and expect a maintenance free chimney, a cleaning log is not the right choice for you.


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