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Why does a black liquid appear in the wood stove tube? Find out how to avoid it


Have you ever wondered about that black liquid that can come out of the pipe of your wood stove? In this article, we’ll explore this phenomenon and how to avoid it to make the most of the warmth your wood stove has to offer.

Black Liquid: What Is It and Why Does It Happen?

This phenomenon refers to the dark, sticky substance that can escape through the wood stove pipe. This problem is more common than you might think and may be caused by condensation of fumes and flue gases.

Reasons and How to Avoid It

1. Outer & Double Tubes: A Barrier Against Condensation

Condensation occurs when flue gases cool too quickly when they come into contact with cold surfaces in the exhaust system. To prevent this, it is essential to have outer or double tubes. These act as a thermal barrier, preventing the temperature from dropping sharply and thus reducing the possibility of condensation.

2. Anti-Reboco Cap: Water Protection & Performance Enhancement

Installing an anti-reboco cap at the outlet of the pipe is an effective strategy. Not only does this accessory prevent water from entering the duct, but it also helps the wood stove run more efficiently. By preventing the entry of external elements, such as rain, the formation of black liquid is minimized and a more effective draft is ensured.

3. Choosing the Right Wood

The quality of the wood you use also plays a crucial role. Be sure to use dry, well-seasoned wood. Moisture in wood is a significant contributing factor to the formation of condensation and, therefore, black liquid.

4. Precautions During Ignition

When turning on the stove, do so gradually and avoid overfilling. Proper ignition is essential to prevent condensation. In addition, this helps to achieve optimal temperatures in the exhaust system and reduces the likelihood of black liquid formation.

black liquid

Conclusions: Enjoy the Heat Without Worries

In short, understanding the reasons behind the black liquid that can leak out of your wood stove pipe is key to avoiding this problem. Investing in outer or double pipes, along with the installation of an anti-reboco cap, are essential preventive measures. In addition, by carefully choosing wood and taking precautions during lighting, you will ensure efficient and prolonged operation of your Panadero stove.

Have you found this article useful? Take a look at our blog and find solutions and recommendations to help you with your fireplace or wood stove.

If you still haven’t got your fireplace or wood stove for this winter… what are you waiting for? Visit our online store of Panadero wood stoves.

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