If you do not have a chimney (and therefore need to buy a clip-together one) skip this article and see our chimney design service
Have a pen and paper ready. By the end of this article you should be able to answer the following questions (ready for when you order):
What stove do you wish to fit?
How many metres of liner do you need, of what grade and diameter?
Which Fitting Pack (everything else you need)?
How can you get your free £100-£300 of free fitting materials with any stove purchased?
1.CHOOSE A STOVE. 2. CHOOSE A LINER. 3. CHOOSE A FITTING PACK
THE STOVE FITTER’S WAREHOUSE CAN SUPPLY ALMOST ANY STOVE… WITH £100-£300 OF FREE CHIMNEY LINER OR TWIN WALL FLUE INCLUDED WITH OVER 99% OF STOVES.
AARROW, ADURO, AGA, BOHEMIA, BORU, BROSELEY, BURLEY, CHARNWOOD, COSYFIRE, CUBIC, DOVRE, DG FIRES, DRU, DUNSLEY HIGHLANDER, DUNSLEY YORKSHIRE, EKOL, FIREBELLY, FRANCO BELGE, GAZCO, HILLANDALE, HUNTER, INVICTA, MENDIP, MERLIN, MORSO, PARKRAY, PEVEX, SALAMANDER, SALTFIRE (ST1/ST2/ST3/ST4), STOVAX, SAEY/WESTFIRE, TRIANCO NEWTON, VILLAGER, WOODWARM, WOOLLY MAMMOTH, YEOMAN
If your desired stove is not represented in STOVES & MATERIALS or THE BIG STOVE DATABASE this may be due to us not wishing to be constrained by a brand’s advertising and pricing rules (updating the BIG STOVE DATABASE is a never-ending job). Contact us and we will advise, and where possible, provide a custom link to your chosen stove.
IF YOU ARE IN A SMOKE CONTROL AREA CHOOSE A DEFRA APPROVED STOVE.
A liner is… a flexible stainless steel tube you slide down your chimney and connects at the stove end and at the chimney pot end. Do you need to line your chimney? In 90% of cases yes so just assume you do is best – see do I need to line my chimney? for more about this.
Choose 5″ or 6″ diameter depending on your stove and what is legally allowed (it is possible to get stoves that need a 7 ” liner but this is rare). Five inch liner is easier to fit in all but the largest diameter chimneys but can only be used if the stove has a 5″ collar and the stove is DEFRA approved for use in a Smoke Exempt area (sometimes designated SE) and the manufacturer does not state otherwise. Serious note: if in any doubt whatsoever save the fitting stress and fit 5″ liner to a stove that is allowed to have one (a Defra approved stove with a 5″ collar).
Choose between 316-grade stainless steel (standard liner 15 yr guarantee at approx. £20-£25 a metre for quality stuff) or 904-grade stainless steel (best quality liner 30 year guarantee at approx. £30-£35 a meter for quality stuff) for your liner. FREE £100-£300 materials with 99%+ or more stoves purchased from Stovefitter’s Warehouse. Choose 904 grade for heavy use, if you will be burning smokeless fuel or coal, if you will be slumbering a stove for long periods, or if the stove might be used to burn wood not fully seasoned (not a good idea but in holiday homes etc. who knows what might end up in a stove). Choosing 904 grade provides real belt and braces quality (a choice recommended by Julian). 316 grade is however perfectly suitable for light to medium use burning well seasoned (dry) wood.
Liner can be cut with a hacksaw or tin snips. Duraflue can be inserted into the chimney any way up (you cannot get it wrong). Liner is sold by the full metre. Liner is non-returnable. Liner can be easily swept once a year.
Liner is available online at various establishments with fancy websites for as little as £9.99 a meter. All liner is NOT the same. Fit the good stuff. Fit Duraflue. Fit And Forget. See here for info about why choosing cheap liner is not a good idea.
Fitting a stove and liner is not rocket science. The “Fitting Pack” (packs shown further down in this article) includes virtually everything (besides stove and liner) that you will need in order to fit a stove and chimney liner. What you do not get is the closure plate that blocks off the bottom of the chimney (the ceiling above your stove); for this we recommend 12mm easy to cut Hardiebacker concrete board 80cm x 1.2m x 12mm available Jewsons, B&Q sometimes and many builder’s merchants.
Pic above shows, from bottom upwards: stove, black pipe, stub nose adaptor (has a snout inserted into black pipe), chimney liner inserted into top of adaptor (liner goes all the way to the top of the chimney where it connects to the cowl and chimney pot with a hanging cowl. Note that adaptor lives above closure plate out of sight.
All fitting packs include some black vitreous pipe (the pipe that sits on the stove and passes through the closure plate via something called a sealing plate), either one straight length in Fitting Pack 1, or two 45 degree elbows* to form an offset in Fitting Pack 2, or a T-piece in Fitting Pack 3. But please check that what we provide is enough and order extra if required.
Straight lengths of vitreous pipe can be cut down using a new hacksaw (slow) or grinder + disk 1mm thickness (fast cut). E.g. if you think you need between 40cm and 65cm you could by a one metre and cut to length. Small self tappers and pilot drill bit included in the pack can be used to provide extra joint strength between sections of pipe and also for the connection between the black vitreous pipe and the adaptor that connects the vitreous pipe to the liner. No sealant or fire cement is used between joints on vitreous pipe.
*If you desire 30 degree elbows (rather than the usual 45’s) please specify in “Special Instructions” at checkout (you can also add a “change to 30’s”product, priced at £0, to your basket in the Fitting Packs section).
Soot doors (sweeping doors) in black vitreous pipe are only necessary if one CANNOT sweep a stove “through the stove” e.g. some Ekol models. Most stoves CAN be swept through the stove. Soot doors, if included in a fitting pack, are always at the bottom of vitreous pipe lengths (top of soot door will sit approx. 20cm-25cm above top of your stove’s collar).
Included in every Fitting Pack, as well as black vitreous pipe are the following items:
1x Duraflue Stainless Steel Hanging Cowl for chimney pots between 6″ and 13″ diameter (connects directly to liner and pot and can be fixed in just a few minutes). Not all cowls are the same and the Duraflue model is one of the finest (other cowls I have fitted in the past have rusted and expired within a year! Note the use of “nuts n bolts” rather than flimsy rust-prone spot welds).
1x heavy duty stainless-steel Duraflue adaptor (connects liner to black vitreous pipe).
1x Fire cement (for sealing black pipe into stove collar if not a snug fit anyway then use nothing). Or use supplied fire webbing if gap a little larger (preferred to fire cement which cracks and is a bit crap).
1x Sealing plate (a neat way of allowing the black pipe through the closure plate). Has a membrame to make a reasonable seal.
1x Data plate (small info plate required by building regulations)
1x Useful items pack (tiny self tappers for securing adaptor to black vitreous stove pipe, extra strong drill bit for pilot holes, long self tappers for securing sealing plate to your closure plate, nut setter for the long self tappers, fireproof webbing for adaptor snout to ensure a snug fit).
To avoid confusion, steel flue is the same as vitreous pipe.
Fitting Pack 1 is the simplest method of stove fitting but it is reliant on you having enough depth between lintel and back wall (or your stove will end up too close against the back wall).
So can you you use Fitting Pack 1?
QUICK DECISION: IF “A” IS 30CM OR MORE THEN YOU CAN USE THIS FITTING PACK!
OTHERWISE YOU ARE BEST TO DO THE MEASUREMENTS BELOW
1. WHAT IS MEASUREMENT A? Measure the depth of your chimney at point A (measure the narrowest point in the lower section of chimney). Remove 6 cm from this figure (the adaptor is thicker than the vitreous pipe/liner). If your new figure is greater than 30cm then you are almost certainly okay with Fitting Pack 1.
2. WHAT IS MEASUREMENT B FOR YOUR CHOSEN STOVE? This is the distance between the back of the stove body and the front of the flue collar (B). Note that the given measurement in stove brochures or online is often “back of stove to centre of flue” but we want “back of stove to front of flue”. If this is the case you need to add “half the flue diameter” to bring the figure up to spec.
3. WHAT DO YOU DESIRE MEASUREMENT C TO BE? Use 10cm for measurement C is my advice if the back of your recess is Hardiebacker board. If brick or stone you can go as close as 5cm.
Using these measurements you can determine if you have sufficient room for things to fit nicely (Measurement A MUST be more than measurements “B & C combined” for FITTING PACK 1 to work). If you do not have sufficient room you SHOULD choose FITTING PACK 2, 3 OR 4.
CLICK ONE OF THE LINKS BELOW TO GO DIRECTLY TO THE REQUIRED FITTING PACK WITHIN THE STOVE FITTER’S WAREHOUSE OR NOTE DOWN THE REQUIRED CODE FOR USE AS REQUIRED).
FITTING PACK ONE: WITH ONE-METRE FLUE PIPE
Choose 5″ liner for 4″ flue collar (code FP1-4-5) Choose 5″ liner for 5″ flue collar (code FP1-5-5) Choose 6″ liner for 5″ flue collar (code FP1-5-6) Choose 6″ liner for 6″ flue collar (code FP1-6-6)
FITTING PACK ONE: WITH HALF-METRE FLUE PIPE
Choose 5″ liner for 4″ flue collar (code FP1-4-5h) Choose 5″ liner for 5″ flue collar (code FP1-5-5h) Choose 6″ liner for 5″ flue collar (code FP1-5-6h) Choose 6″ liner for 6″ flue collar (code FP1-6-6h)
FITTING PACK ONE: WITH HALF-METRE FLUE PIPE PLUS SOOT DOOR (if you require “1m with soot door” YOU CAN PURCHASE AN UPGRADE IN THE FITTING PACKS SECTION HERE).
Choose 5″ liner for 4″ flue collar (code FP1-4-5wd50) Choose 5″ liner for 5″ flue collar (code FP1-5-5wd50) Choose 6″ liner for 5″ flue collar (code FP1-5-6wd50) Choose 6″ liner for 6″ flue collar (code FP1-6-6wd50)
Fitting Pack 2 is what you will choose if Scenario 1 is not suitable as your lintel is in the way of using a straight flue pipe, or you wish to “bring the stove into the room a little”).
Elbow offsets when two elbows combined
6″ 30 degrees = approx. 4″ offset
6″ 45 degrees = approx. 5″ offset
5″ 30 degrees = approx. 4″ offset
5″ 45 degrees = approx. 5″ offset
Simple answer is yes but only if “the distance between “the top of your chosen stove and your closure plate” (A) is 35cm or more. Two 45 degree elbows stacked on top of each other are perfectly suited to a gap of 35cm because the top elbow will then pass through the closure plate with its vertical section allowing the sealing plate to do its job (and not its 45 degree section which makes any kind of seal difficult to achieve as one has to make an elipse shape in the closure plate).
To achieve this 35cm distance you might have to move your lintel to a higher position (although then you risk exposing your gather). More information here.
See the two diagrams below:
As seen in the diagram above you can in some circumstances place the closure plate inside the chimney .
You might be tempted to have a low closure plate with the pipe passing through the plate on the 45 degree section of the two-bend-offset. I would advise against this as the sealing plate will not work and creating a neat, sealed ellipse will be very difficult if not impossible.
FITTING PACK TWO: WITH NO SOOT DOOR IN EITHER ELBOW
(CLICK ONE OF THE LINKS BELOW TO GO DIRECTLY TO THAT FITTING PACK WITHIN THE STOVE FITTER’S WAREHOUSE OR NOTE DOWN THE REQUIRED CODE)
Choose 5″ liner for 4″ flue collar (code FP2-4-5) Choose 5″ liner for 5″ flue collar (code FP2-5-5) Choose 6″ liner for 5″ flue collar (code FP2-5-6) Choose 6″ liner for 6″ flue collar (code FP2-6-6)
FITTING PACK TWO: WITH SOOT DOOR IN BOTTOM ELBOW (soot door also known as sweep’s door useful if stove does not allow sweeping through stove e.g. Ekol/Saltfire)
(CLICK ONE OF THE LINKS BELOW TO GO DIRECTLY TO THAT FITTING PACK WITHIN THE STOVE FITTER’S WAREHOUSE OR NOTE DOWN THE REQUIRED CODE)
Choose 5″ liner for 4″ flue collar (code FP2-4-5soot) Choose 5″ liner for 5″ flue collar (code FP2-5-5soot) Choose 6″ liner for 5″ flue collar (code FP2-5-6soot) Choose 6″ liner for 6″ flue collar (code FP2-6-6soot)
FP2 FITTING PACKS DO NOT INCLUDE ANY STRAIGHT LENGTHS OF VITREOUS: if you require EXTRA vitreous pipe on top of your offset elbows choose from within the WAREHOUSE here (opens in new window/tab).
If you need to bring your stove into the room (and much more out of the recess) then this is the method to use. You MUST have at least 30cm air gap left and right of your stove for this method as the sweep must be able to access the soot door at the rear of the stove and sweep via this door (this 30cm requirement often prevents this method being a good method for dealing with a low lintel). The 30cm is not a Building Regulation but you must have access and it is the minimum gap that I would insist upon.
An improvement on the method of pack 3. This method you can sweep through the stove and so do not need the 30cm side clearances (although some brands request 10 or 15cm clearance either side). The only problem is that I only know of one brand that has these adaptors and that is Charnwood (who request 15cm each side of the stove to allow heat to escape to room).
You might wonder why you cannot just come off the back of ANY stove with a 45 degree elbow? Well it is not a good idea as soot can clog in an elbow (the Charnwood adaptor has no flat spots for soot to collect). Also 90 degree bends are not allowed and you are technically creating a 90 degree bend using two 45 elbows (you’ll need a second elbow at some stage to point skyward).
The article on this page does NOT include the subjects listed below. For these subjects click on the orange “DIY” rectangle link. Probably best to read the above info first though.