The Hidden Threat of Chimney Fires

Most of us know the beauty of fires through the ones we see in our fireplaces. As we’ve seen wild fires burn throughout California, many of us have been reminded of the real dangers of fire.  The fire within a fireplace gives your warmth and comfort, and the chimney carries the gases from the fireplace and out from its top, providing you with safety in your home.

 

However, many chimneys have underlying problems that can lead to fires inside the chimney. Some of them are visible as they come out the top but many of them are hidden. Sometimes a slow-burning fire is hidden somewhere inside the chimney, without enough fuel to make it grow noticable. Even though they may not be visible, these fires are very hot and can damage the chimney’s infrastructure.

 

chimney fire danger

 Warning Signs

There are generally three signs of a possible chimney fire even when you may not see it. First, you might hear a loud sound. Second, you might see an unusually high amount of thick smoke. Lastly, you will notice a very strong, hot smell.

 

Fuel

A key fuel for these fires is creosote. What is that? It is basically the build-up that covers the inner lining of your chimney. When using a fireplace, certain products are created as a result of fire. Chimneys are designed to take them out through the top. As they go to the top, the cooler temperature hitting these items causes condensation which creates a flaky residue on the inner lining which is highly flammable. This is creosote.

When the quantity of the creosote gets large enough, it can fuel a chimney fire. The main causes for such a build up is a restricted air supply, unseasoned wood, or cooler than normal chimney temperature. These are all preventable with regular chimney inspections and cleaning.

 

Why does it matter?

The high temperature of these chimney fires can damage the interior lining of the chimney, melt mortar, crack tiles, or even destroy prefabricated chimneys. Get your chimney inspected and cleaned each year. If you have questions or want to have your Bay Area home inspected, please contact Sal at the Irish Sweep.

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