Log Burner in an Inglenook Fireplace — UK 2026 Cost Guide

The short answer

UK 2026 typical: £3,200–£5,000total installed — £300–£1,000 above a standard install. The premium covers bespoke register plate fabrication (£200–£500), correctly-sized 6" flexible flue liner inside the oversized inglenook chimney, and potential structural assessment for the new stove weight on shallow flagstone hearths.

Why inglenooks cost more than they look

The popular assumption: existing large fireplace opening = easy, cheap installation. The reality:

• Bespoke register plate / soot box: a traditional inglenook has an open throat (no damper) rising into a large rectangular chimney. Before the stove can be fitted, a steel soot box and register plate must be fabricated and installed at the throat level. Bespoke fabrication for non-standard inglenook sizes: £200–£500
• Flue liner sizing: the large inglenook flue (often 9"×9" or 12"×12") is too wide for efficient stove draught. A 6" flexible stainless liner must be installed for adequate draught — adds £800–£1,800 to the standard install
• Hearth reinforcement: many inglenook hearths are original flagstone on shallow beds. Structural assessment for the new stove weight (80–200kg) may be required. Relaying or reinforcing: £200–£600
• Lost heat output to the recess: the deep inglenook means the stove sits further from the room. Owners often pair an inglenook stove with a heat-powered stove fan to redistribute warm air
• Plinth or corbelled platform: some installers raise the stove on a plinth to bring it forward into the room — adds £150–£400 for fabrication

Inglenook flue insulation

To achieve the minimum 300°C flue temperature for adequate draught, the 6" liner inside a large inglenook chimney needs vermiculite or LECA backfill around it for insulation. This is essential — without it, the liner cools too rapidly and creosote forms.

Backfill cost: £300–£700 for materials and labour. Recommended for any inglenook with a chimney significantly larger than 6" bore.

Structural assessment

Older inglenooks (15th–17th century) often have an original timber bressummer (the load-bearing lintel beam across the front of the opening). If the bressummer is compromised by age, fire damage, or worm, structural engineer assessment is required — and possible remediation can add £600–£2,000 to the project cost.

A HETAS-registered installer familiar with period properties will flag this at quote stage. Insist on a structural inspection if the bressummer shows visible damage.

Heat distribution from a recessed install

The deep inglenook recess means the stove sits 200–400mm back from the room edge. Compared with a flat-wall install, this reduces direct radiant heat to the room by 15–30%.

Common UK owner remedies:

• Heat-powered stove fan on top of the stove redistributes warm air out into the room. See our stove fan buyer's guide
• Plinth or corbelled platform brings the stove forward toward the room edge (£150–£400)
• Choose a slightly larger kW than a flat-wall install would need — to compensate for reduced direct radiant heat

HETAS access — standard

Inglenook installs are within standard HETAS scope. Most experienced HETAS installers encounter inglenooks regularly — especially in rural and historic UK regions. Specialist heritage installers are not required unless the building is also Listed (see our listed building install guide).

Frequently asked questions