How do you renovate a chimney flue?

Laurence (Le Plessis-Trévise): "My husband and I have decided to install a wood-burning stove in our living room - it's been our dream since we bought the house! Now that we've got the budget, what's holding us back is the old chimney flue... It's going to be complicated, I'm not sure the result will be safe, and I'm very worried that the connection to the stove won't be very pretty." When it comes to installing a log or pellet-burning stove, many of you are wondering about the best way to renovate an old chimney flue... The solution is really simple and is commonly used by professionals: lining the chimney!

The principle of lining

The principle: an independent stainless steel pipe is inserted inside the existing flue, connected on one side to the stove and on the other to the roof outlet. The result: the existing flue is reused, the draught is good and the installation is safe and long-lasting!

Your old flue

Traditional masonry chimney flues are not suitable for evacuating smoke from modern wood-burning stoves. Too big, too old, not necessarily watertight, they carry risks: condensation, poor draught, poor resistance to the temperature of the smoke or worse, fire. And they are not economical, since poor smoke evacuation has a negative impact on the operation and efficiency of your appliance!

It doesn't matter whether the flue is straight or curved (when the flue deviates from its axis, it is referred to as a "deviated" flue), lining is possible because there are different types of lining: flexible lining and rigid lining.

Flexible lining

For lining a deviated flue connected to a log-burning stove, use a flexible, double-skinned stainless steel tube with a smooth inner wall: Starflex from Cheminées Poujoulat. If the deviated flue is connected to a pellet stove, the PGI System adaptation kit from Cheminées Poujoulat is suitable.

Rigid lining

To lining a straight flue, we use a rigid stainless steel tube: Tubaginox Rigide.

This smooth, round lining is adapted to the diameter of the stove and optimises its operation.

Connecting to the stove

You've chosen a beautifully designed stove, and you want it to look good too! For the exposed flue, you can opt for decorative enamelled flues, available in a range of colours to match your decor perfectly.

At the junction between the chimney flue in the attic and the connecting flue under the ceiling, the flue finishing panels have a real decorative role to play.

Depending on the configuration of your log or pellet stove, you'll find the adaptation kit you need in the Cheminées Poujoulat range, in particular the sealed combustion air inlet kit.

Lining and connecting, video instructions

Take a step-by-step guide to lining an existing flue and connecting a heating appliance.

The advantages of Cheminées Poujoulat

Chimney lining solutions are one of Cheminées Poujoulat's specialities. We have developed a complete range to meet this renovation need:

- A solution for every project: whatever the dimensions of your flue, Cheminées Poujoulat has the right diameter of flexible or rigid flue pipe, and therefore a solution for renovations.

- Optimum safety: the metal flue is stable, watertight and resistant to high temperatures.

- Longevity: our stainless steel flues are designed to last a long time. Manufactured in our factory using quality materials, they are rigorously inspected and tested.

- Technical and aesthetic quality

Cheminées Poujoulat even participates in the training of professional installers with its dedicated programme, which allows them to benefit from up-to-date product knowledge and a better understanding of the regulations.