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Connecting a wood burning stove to a chimney flue liner: introduction

By Julian Patrick

Which Installation Do I Need?

You are here because you want to fit your stove to a chimney liner within a fireplace recess (builder’s opening). Because chimney liners can only be used within a chimney then you must have a chimney.

Let’s look at a couple of diagrams. Your installation will likely be one of the following:

Two Elbows

This is the most typical of the installations. The two elbows are required because otherwise the rear of the stove would be too close to the rear wall.
The flue is swept via the stove if the stove permits this, or one of the elbows will have a soot door.

Rear Stove Fitting with T

Steel flue with rear t-junction

Here the fitter has chosen to fit the flue pipe to the rear of the stove – maybe to bring the stove more into the room. Soot build up is prevented by the soot collection area in the T. You must have access to the rear of the fireplace to access this soot collection area – so only wide builder’s openings are suitable. Sweeping is via the soot collection door or a soot door in the vertical flue (a sweep may desire both).

45 Degree Rear Exit

45 degree flue in rear

Some stoves (Charnwood C-Series) have a purpose designed 45 degree rear exit, this ensuring soot cannot build up in the pipe. Sweeping is via the stove (if the 45 is designed to allow this) or a soot door in the vertical steel pipe (not shown on graphic). This option is excellent for bringing a small stove more into the room if the recess allows less air gap left and right than desirable.

Straight and Easy

straight flue into top of stove

Nice and easy if your builder’s opening is deep enough (usually a depth of minimum 30cm is sufficient). Sweeping is through the stove if the stove design permits it (or via a soot door in the vertical steel flue pipe).

Through the Wall

Steel flue through the wall

It is very rare that I do this but it is a very viable option. The hearth and stove will take up more space within the room but it is fairly simple to do. The pipe passes through a hole in the chimney breast and is protected from your new mortar by fireproof rope or webbing.

By Julian Patrick

Julian Patrick is the author of The Stovefitter's Manual and an experienced wood burning stove installer (including solid fuel heating systems).

Laid down tools in 2013 to write The Stove Fitter's Manual and open a small shop in North Wales (the Wood Stove Hut). Launched Stovefitter's Warehouse soon after due to fast growth of sales.

Own stove is a DG Ivar 5.


We will happily strive to match any price you may have from any other supplier as long as the other supplier has it in stock.
Offered an "ex-display" or "shop soiled"? We will strive to offer you a new stove for the same price.

Already have a chimney? You need 1. Stove 2. Liner 3. Fitting Pack 4. Chimney closure plate (Hardiebacker board from Builder's merchants or galvanised sheet).That's it!
No chimney? Check out our shed kits or let us design your clip-together chimney design - easy peasy.

Julian Patrick, author of the Stovefitter's Manual

Stovefitter's Warehouse is owned and managed by Julian Patrick, blogger and author of The Stove Fitter's Manual. Julian was previously a full-time installer of wood-burning stoves (including solid fuel heating systems). He laid down the tools in 2013 to write his stove manual and open a small shop in North Wales (the Wood Stove Hut, soon to grow into The Stovefitter's Warehouse).

More info about the company and Julian's team here