Complete flue kits
We assemble the complete flue pipe kit for you, from stove adapter to cowl. No missing parts during installation.
Which Parts Do You Need for a Flue System?
Published on 24 August 2026
Written by Dries Nijs4 min read
Written by Dries Nijs4 min read
Flue system parts overview
A complete flue system consists of an adapter, straight pipes, elbows, a tee piece with soot collector, brackets, a wall or roof penetration, insulation, a storm collar and a cowl. Choose all parts in the same diameter and brand, and follow your stove's manual.
One system, one diameter, one brand, this prevents most installation errors.
A complete flue pipe system consists of a fixed set of components. The most important flue system parts are an adapter for the stove, straight flue pipes, 45 or 90 degree elbows, a tee piece with soot collector, wall brackets and locking bands, a wall or roof penetration kit, insulation, a storm collar and a anti-down-draught cowl. Below you will read what each part does, so you can assemble a matching kit yourself.
Every component has its own job. The adapter connects the stove to the pipe, straight pipes create the main draw, and elbows guide the smoke towards the wall or ceiling. The tee piece with soot collector catches moisture and soot, brackets carry the weight, and the flashing kit, insulation, storm collar and cowl keep everything waterproof and fire safe.
Single wall indoor versus twin wall outdoor or penetration
Rule of thumb, single wall is allowed indoors, but from the wall penetration and outdoors you always choose twin wall.
Matching diameter and brand
We match every component to your stove and single system. All joints fit seamlessly for optimal chimney draw.
Safe wall and roof flashing
We supply wall and roof penetration kits according to safety clearances. Your system remains safe and waterproof.
How to assemble a flue system
Start with the stove adapter that fits your stove outlet.
Install a straight pipe upwards, as it creates the primary natural draught.
Add a 45 or 90 degree elbow if you need to route towards the wall or roof.
Install a tee piece with soot collector at the lowest vertical point to catch moisture and debris.
Add the wall or roof penetration kit, with proper insulation around the pipe.
Continue outdoors using twin wall pipes, secured with wall brackets and locking bands.
Finish the roof exit with a storm collar to prevent rain penetration.
Cap the top with an anti-down-draught cowl or chimney cap.
Do not forget the wall brackets and locking bands, as every pipe supports weight and twin wall sections are heavier than single wall. Position sufficient wall supports and secure every joint with a locking band, especially on the vertical outdoor pipe run. This ensures your flue system remains straight, stable and leak-tight.
Shopping list for your flue pipe system
Stove connector matching your stove brand
Straight flue pipes in the required lengths
45 or 90 degree elbows
Tee piece with soot collector and cap
Wall brackets and locking bands per pipe section
Wall or roof flashing kit with insulation
Storm collar and chimney cowl or terminal
Heat-resistant sealant and mounting screws
Along with the pipes, make sure to include small installation hardware. High-temperature silicone seals the joints, while correct screws and clamping bands keep everything fixed in place. A quick check of this parts list before ordering prevents unexpected delays during installation.
Correct diameter and brand compatibility
Selecting the correct diameter ensures all parts fit together properly and your stove draws efficiently. Select the flue size specified in your stove manual and maintain it throughout the entire chimney system. If you are uncertain, read what stove pipe diameter you need before ordering components.
The length of the straight pipes and the number of bends influence the draw. More elbows mean increased flow resistance, so keep the chimney run as straight and short as possible. Calculate the required pipe lengths in advance to avoid ending up with sections that are too short or too long.
Never mix different brands, as locking connections vary between systems and will not seal airtight. A tee piece with soot collector belongs at the lowest vertical point, where moisture and soot collect.
If you are not sure which pipe to use where, check the breakdown between single wall or twin wall flue pipe and the difference. That immediately determines which components you need indoors and outdoors.
Penetration, installation and building regulations
When penetrating a wall or roof, strict clearance distances to combustible materials apply, depending on the situation. Always consult local building regulations and your stove manual as primary guidelines.
A proper roof flashing kit for a flue pipe with a storm collar keeps rain out and directs smoke safely away. Always use twin wall insulated sections and matching flashing components there.
If you want to install the twin wall flue yourself, carefully follow the steps for how to install twin wall flue pipes. If working at height or in doubt about chimney draught, hire a professional installer.
Remember that the tee piece with soot collector at the base must remain accessible. This allows you to easily drain moisture and clear soot during maintenance. Plan the wall penetration and collector location where it can be reached easily, not enclosed behind boxing.
Uncertain about the right parts or installation? Have your kit checked before ordering. Request a free quote or advice and install your flue system right the first time.
Assemble or install your flue system?
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Frequently asked questions
The basics consist of a stove adapter, straight pipes, elbows, a tee piece with soot collector, wall brackets, a wall or roof flashing kit, insulation, a storm collar and a cowl. Together they create a safe and efficient flue.
No, single wall pipe is allowed indoors in the living space, but from the wall or roof penetration and everywhere outdoors you must use twin wall. The insulation keeps the outer pipe cooler and prevents fires and condensation.
The tee piece with soot collector belongs at the lowest vertical point of the flue, usually right after the wall exit or at the base of the outdoor pipe. It catches moisture and soot for easy cleaning.
It is best not to, as joint connections vary between manufacturers and will not seal airtight. Stick to one brand in one diameter and follow your stove manual for a safe installation.
