At first glance, closing the flue seems like a simple and inexpensive solution when a chimney or stove is no longer used. Nevertheless, in practice it turns out that the complete removal of a flue is often the better choice, both in terms of safety and comfort, future resistance and space gain. In this blog we discuss why demolition and removal is usually preferable to just shutting down, and what is involved in a professional approach.
What is the difference between closing a flue and removing it?
When a flue goes out of service – for example after switching to central heating or due to the demolition of a fireplace – owners are faced with a choice: do I have the flue closed or do I have it removed?
Sealing means that the flue remains intact, but that the opening at the top and bottom is closed. The underside is often insulated with glass wool or rock wool and closed with a plate, while a hood or cover plate is placed on top to keep out rain and birds.
Removal, on the other hand, involves dismantling the entire flue – including the interior structure and chimney jacket. This is a more complex job, but with many advantages.
Why is removing a flue usually better than shutting it off?
While closing the flue may seem cheaper and faster, there are many situations where removal is the better choice. We explain the main reasons below:
1. Structural damage and safety
Old flues can suffer from cracks, unstable masonry or even subsidence. In some cases there is asbestos-containing material, especially in buildings built before 1993.
- Shutting down does not address the root cause of these problems, but only masks them.
- Removal, on the other hand, eliminates all risks of collapse, leaks or health problems due to outdated materials.
In the event of structural damage, closing the flue is simply not enough to ensure the safety of the premises.
2. Space gains for redevelopment
A flue often runs from the ground floor to above the roof, taking up valuable space on several floors.
Removing the flue creates opportunities for:
- Expanding a bathroom or kitchen
- The realization of a built-in wardrobe
- More open space in the attic or attic
When shutting down, the space intake of the flue is maintained. Removal thus offers more freedom in redecorating your home or office.
3. Better energy performance
The removal of the flue also has clear advantages in terms of energy consumption.
- A sealed flue often remains a weak spot in the insulation shell of a building.
- Heat can still be lost through seams and cracks, especially if the seal deteriorates over time.
When you remove the flue, you are also removing a potential source of heat loss, making your home more energy efficient.
4. No maintenance and long-term costs
A closed flue still requires regular inspection, especially if the flue runs through several floors and the roof. Think about checking for moisture problems, cracks or blockages.
With complete removal, these concerns are a thing of the past. You prevent:
- Periodic maintenance or repairs
- Unexpected costs in the event of leaks or damage
- Difficult situations when selling the home (such as mandatory asbestos removal)
5. Tightly finished inside and outside
A common reason to remove a flue is to strive for a neat finish. After removal, the interior can be finished completely flat with plasterboard or stucco, without visible remains of a flue. Also outside, the roof is completely restored with roofing tiles, bitumen or lead.
When shutting down, caps, plates or the original chimney jacket often remain visible, which can be perceived as disturbing.
6. Possibility of subsidy
More and more municipalities are encouraging the removal of unused flues, especially if they contain asbestos.
- Cities such as Ede, Nijmegen and Utrecht offer a subsidy or compensation for the removal of outdated flues.
- These schemes often do not apply when shutting down, because the environmental benefits are limited.
Be well informed in advance whether your municipality offers a demolition subsidy.
How does the removal of a flue proceed?
The professional removal of a flue consists of several steps.
1. Inspection and advice
An experienced Demolisher checks the structural situation, presence of asbestos and its influence on load-bearing structures.
2. Asbestos removal (if applicable)
If the flue contains asbestos, it must be removed by a certified company according to strict safety guidelines.
3. Demolition work
The channel is carefully demolished, from top to bottom, with minimal dust formation. Debris is removed immediately.
Depending on the complexity, this job takes an average of one to three days.
Have your flue expertly removed by WijSlopenNu
Are you hesitating between shutting off a flue or remove? In most cases, removal is the safest, most future-proof and Space-winning choice. At WijSlopenNu we help you from a to Z: From inspection and asbestos check to professional demolition. Request a free quote today at WijSlopenNu and discover what we can do for your home or office.
