Log Burner Installation Costs UK — What to Charge to Fit a Wood Burning Stove in 2026

The Main Cost Components of a Log Burner Install

A log burner installation is never just the stove. The price a customer pays is built up from several distinct elements, and understanding each one is the difference between a profitable quote and an expensive lesson. Before you give a number, you need to know whether there's an existing chimney to line or whether you're building a flue from scratch — that single factor can double the job.

The Stove Itself

The appliance is the part the customer fixates on, but it's often not the biggest cost. Since 1 January 2022 every new wood burning or multifuel stove sold for installation in the UK must meet Ecodesign standards, so anything you fit should be Ecodesign Ready and, ideally, DEFRA-approved (Exempt) if the property is in a smoke control area. Prices fall into three rough tiers.

• Budget stoves (entry-level, often imported): £400–£800
• Mid-range (UK brands such as Stovax, Charnwood entry, Arada): £800–£1,500
• Premium (Charnwood, Clearview, Esse, Contura, Morsø): £1,500–£3,000+

Multifuel models with a riddling grate that can burn smokeless fuel as well as wood typically sit at the higher end of each band. Decide early whether you're supplying the stove or fitting a customer-supplied appliance — your liability and your margin both change depending on which.

The Flue or Liner

This is where the two install types diverge sharply. For a property with an existing masonry chimney, the standard approach is to drop a flexible stainless steel liner down the stack. Use a 904/904 grade liner for wood and multifuel — the cheaper 316 grade is only really suitable for occasional wood-only use and corrodes faster under the acidic, condensing conditions a modern efficient stove produces. A 904/904 liner kit runs roughly £25–£45 per metre, and a typical two-storey chimney needs 5–7 metres plus the cowl, clamp, top plate and adaptor.

Where there is no chimney, you build a twin-wall insulated flue system that runs internally and out through the roof, or up an external wall. Twin-wall components are far more expensive — budget £60–£120 per metre for the pipe plus firestop plates, wall bands, tees, roof flashing and the storm collar. The labour is heavier too, because you're cutting through ceilings, the roof structure or a wall and maintaining the correct distance to combustibles the whole way.

The Hearth and Constructional Hearth

Document J requires a non-combustible hearth beneath and around the stove. A decorative (superimposed) hearth — typically a 12mm slab of slate, granite or glass on top of a suitable base — is fine for stoves with a hearth temperature below 100°C, which covers most modern appliances. Where the floor build-up doesn't already provide a 125mm constructional hearth, you may need to form one, and that adds cost and time. Decorative hearth slabs cost £80–£300 depending on material and size; forming a constructional hearth from scratch can add several hundred pounds.

Register Plate, CO Alarm and Sundries

Where you line an existing chimney, a register (closure) plate is fitted at the base of the stack to seal it, support the liner and stop debris falling. Add the vitreous enamel connecting flue pipe from the stove to the liner, fire cement, rope seal and a thimble or adaptor. A carbon monoxide alarm is a legal requirement under Document J — it must be fitted in the same room as the appliance, and no install should ever leave site without one. These sundries together typically add £100–£250 in materials.

Full Install Prices — Existing Chimney vs No Chimney

The headline figure customers ask for is the "all-in" price, and the single biggest variable is whether there's a usable chimney. Here are the realistic 2026 ranges for the common scenarios.

Full Install Into an Existing Chimney (With Liner)

This is the bread-and-butter job: sweep the chimney, CCTV inspect it, drop a 904/904 liner, fit the register plate, set the stove on a hearth, connect up, fit the CO alarm and notify building control via your competent-person scheme. All-in, including a mid-range stove, this typically lands at £1,500–£3,000. The lower end assumes a straightforward straight stack, easy access and a budget stove; the upper end reflects a taller chimney, more liner, hearth works or a pricier appliance.

Twin-Wall Flue Install (No Chimney)

Building a flue from scratch through the roof or up an external wall is a significantly bigger job. Between the cost of twin-wall components, the labour to penetrate and weatherproof the roof or wall, and often scaffolding or a tower for safe working at height, these installs run £2,500–£5,000+. A two-storey internal run exiting through the ridge, or a complex external route, can push well past £5,000 once scaffolding and making good are included.

Stove-Only Swap

Replacing an old stove with a new one where the liner, hearth and register plate are all sound and recent is a much smaller job — typically £450–£900 in labour plus the appliance. Always inspect the existing liner before quoting a swap; if it's an old 316 liner or it's degraded, you're back to a full reline and the price changes accordingly.

Chimney Sweep, CCTV Inspection and Sign-Off

Before any liner goes in, the chimney must be swept and ideally CCTV inspected to check for cracks, blockages, deformities or a flue that's too narrow for the liner. Sweeping and a smoke or CCTV inspection runs £60–£150 as a standalone service and is often folded into the install price. Don't skip it — discovering a collapsed flue after you've started costs you far more than the inspection.

On completion, the install must be notified to building control. As a HETAS registered installer working under the competent-person scheme, you self-certify the work and issue a HETAS certificate of compliance — the customer receives this and a notification is sent to their local authority automatically. The alternative, for non-registered work, is the customer submitting a building notice and paying the council a building control fee (commonly £200–£400) plus arranging inspections. This is exactly why registration is a selling point: it saves the customer the building notice route and the delay that comes with it.

What Affects the Price

Two log burner installs at the same headline stove price can differ by thousands once the realities of the property are factored in. The main cost drivers are:

• Existing chimney vs none: by far the biggest single factor. A twin-wall flue build is routinely £1,000–£2,500 dearer than lining an existing stack.
• Liner length and roof height: taller properties need more liner and harder access. A three-storey townhouse stack costs more in both materials and time than a single-storey cottage.
• Access and scaffolding: working at the chimney pot safely may need a tower, scaffold or roof ladders. Scaffolding alone can add £400–£1,200 depending on the property and duration.
• Hearth works: a simple decorative slab is cheap; forming a constructional hearth, lifting floorboards or building up a non-combustible base adds labour and materials.
• Fuel type: multifuel installs may need a deeper ash management setup and always justify the 904/904 liner. Wood-only occasional use is the only case where a cheaper liner is even arguable.
• Smoke control area: in a DEFRA smoke control area you must fit a DEFRA-Exempt (Ecodesign) appliance. This narrows the stove choice and can nudge the appliance cost up.
• Building control and HETAS sign-off: registered self-certification is included in your price; the non-registered building notice route adds council fees and time for the customer.

Building Regs, HETAS and Why the CO Alarm Matters

Solid fuel appliance installation is controlled work under Approved Document J of the Building Regulations, which covers combustion appliances and fuel storage. It sets the rules for hearths, distance to combustibles, flue sizing, air supply (ventilation) and the requirement for a carbon monoxide alarm. Getting these wrong isn't just a failed inspection — a poorly fitted flue or an inadequate hearth is a genuine fire and CO poisoning risk.

HETAS is the main competent-person scheme for solid fuel in the UK. Registration lets you self-certify Document J compliance and notify building control on the customer's behalf, issuing the HETAS certificate that they'll need when they come to sell the house. Without it, the work has to go through a building notice with the local authority — slower, and an extra fee for the customer.

The carbon monoxide alarm is non-negotiable. Document J requires one in the room with the appliance, and fitting it is part of leaving a safe, compliant install. It costs a few pounds and it protects both the customer and your reputation — never sign off a job without one in place.

Quoting Tips — What to Check Before You Price

Log burner quotes go wrong when the installer prices off a photo or a phone description instead of a proper survey. Before you commit a number, check:

• Is there a chimney, and is it usable? Sweep and CCTV before you promise a liner price — a collapsed or undersized flue changes everything.
• Measure the flue run. Estimate liner or twin-wall length including bends; under-ordering materials mid-job kills your margin and your schedule.
• Assess the hearth. Check the existing floor build-up against the constructional hearth requirement and whether a new decorative hearth is needed.
• Confirm smoke control status. Check whether the address is in a DEFRA smoke control area, which dictates a DEFRA-Exempt appliance.
• Check ventilation. Stoves above a certain rated output need a permanent air vent — factor in fitting one.
• Plan access. Decide early whether you need scaffolding or a tower and price it as a clear, separate line.
• Itemise the quote. Break out stove, liner/flue, hearth, labour, scaffolding and HETAS sign-off so the customer sees the value and you're not undercut by someone skipping the liner grade or the building control notification.

A clear, itemised quote with a brief survey note — chimney condition, flue length, hearth assessment, smoke control status — sets you apart from competitors who just send a round number. It signals you know Document J, and it gives the customer confidence they're paying for a safe, compliant install rather than a corner-cutting one.

Quick Reference: Log Burner Installation Prices UK 2026