- Materials only: £55–£95 per m² depending on profile — shiplap at the lower end, triple shadow gap at the upper end.
- Add £10–£15 per m² for battens, breather membrane, and stainless steel fixings.
- Add £25–£45 per m² for professional installation labour.
- Scaffolding: £1,500–£3,500 for a typical semi-detached house — budget separately.
- Fire treatment adds 10–20% to material cost where required.
- ThermoWood costs 20–40% more than Siberian larch upfront — but zero maintenance over 30 years means whole-life cost is often comparable.
ThermoWood cladding is one of the most widely specified exterior timber cladding materials in the UK — and one of the most common questions we receive is how much it costs. This guide gives you real 2026 prices for ThermoWood cladding in the UK — per m² by profile, total project costs for different building sizes, what affects the price, and how ThermoWood compares to Siberian larch and Nordic spruce on both upfront and whole-life cost.
ThermoWood Cladding Cost Per m² — By Profile (2026)
All prices below are for materials only, supplied from UK stock with nationwide delivery. Prices reflect current 2026 market rates and are accurate at the time of publication — contact us for a live quotation on your specific profile and quantity.
| Profile | Size | Cost per m² (materials) | Notes |
|---|---|---|---|
| Shadow gap | 19x140mm | £60–£80 | Most popular profile — contemporary residential |
| Shadow gap | 19x117mm | £60–£78 | Narrower board — finer horizontal rhythm |
| Double shadow gap | 26x142mm | £68–£88 | Two grooves — wider board, bolder result |
| Triple shadow gap | 32x140mm | £75–£95 | Three grooves — most architectural profile |
| Triple shadow gap | 26x92mm | £70–£90 | Narrower triple — fine, frequent rhythm |
| Shiplap | 19x140mm | £55–£75 | Most affordable ThermoWood profile |
| Feather edge | 20x140mm | £55–£72 | Traditional profile — rural and residential |
| Rainscreen | 26x68mm | £58–£80 | Open joint vertical — contemporary facades |
| Tongue & groove | 19x140mm | £58–£78 | Flush face — exterior cladding and interior use |
All prices above are for ThermoWood boards only. Your total project cost will be higher once battens, breather membrane, stainless steel fixings, and installation labour are added. See the full project cost section below for complete installed cost figures.
ThermoWood Cladding — Full Project Costs by Building Size
What Makes Up the Total Cost — Full Breakdown
| Cost element | Cost per m² | Notes |
|---|---|---|
| ThermoWood boards | £55–£95 | Depends on profile — see table above |
| Battens (counter + fixing) | £5–£8 | Treated softwood or Siberian larch battens |
| Breather membrane | £2–£4 | Behind batten framework — essential |
| Stainless steel fixings | £2–£4 | A4 stainless throughout — never galvanised |
| Installation labour | £25–£45 | Simple profiles lower end, shadow gap upper end |
| Scaffolding | £1,500–£3,500 total | Per project — not per m². Required above ground floor |
| Fire treatment (if required) | +10–20% on boards | Euroclass B-s1,d0 — via fire treatment service |
| Factory coating (optional) | +15–25% on boards | Pre-applied colour coat — via factory coatings service |
What Affects the Cost of ThermoWood Cladding?
Profile choice — the biggest variable
Profile choice is the single biggest driver of material cost within the ThermoWood range. Shiplap and feather edge profiles at £55–£75 per m² are 25–30% cheaper than triple shadow gap profiles at £75–£95 per m². If budget is a consideration, choosing a shiplap or single shadow gap profile rather than triple shadow gap can save £15–£20 per m² on a large project — a saving of £1,200–£1,600 on an 80m² house.
Board width — affects coverage efficiency
Wider boards cover more area per linear metre, which can reduce the number of boards required for a given area. A 140mm-wide shadow gap board covers approximately 130mm of face width after installation — a 117mm board covers approximately 108mm. Specifying the widest compatible profile for your design reduces material quantity and can lower total cost even if the per-m² rate is similar.
London and South East premium
Installation labour in London and the South East typically attracts a 20–30% premium over Midlands and Northern rates. On a full house re-cladding project this can add £1,500–£3,000 to the installation cost. Material costs are consistent nationwide — delivery charges may vary slightly by postcode but are generally modest.
Project complexity
Projects with numerous corner details, window reveals, door surrounds, and bespoke junction pieces take longer to install — increasing labour cost. A simple rectangular garden room with four elevations and no openings is at the lower end of the labour range. A house with multiple window reveals, corner returns, and mixed elevation heights is at the upper end.
ThermoWood Cost vs Alternatives — Is It Worth the Premium?
| Species | Material cost per m² | Maintenance cost (30 yrs) | Whole-life cost per m² |
|---|---|---|---|
| Nordic spruce | £20–£40 | £15–£25 (treat every 2–3 yrs) | £35–£65 |
| Siberian larch | £35–£70 | £5–£10 (oil every 3–5 yrs optional) | £40–£80 |
| ThermoWood | £55–£95 | £0 — no maintenance required | £55–£95 |
| Charred timber | £75–£130 | £0 — no maintenance required | £75–£130 |
For most UK residential projects where long-term maintenance cost and effort matter — yes. ThermoWood's zero maintenance requirement means the 20–40% upfront premium over Siberian larch is largely recovered over 10–15 years through avoided treatment costs. On a typical 80m² house, avoiding 10 maintenance treatments of Siberian larch over 30 years saves approximately £2,000–£4,000 in product and labour — comparable to the initial price premium. For garden offices and holiday lets where maintenance access is difficult or unreliable, the case for ThermoWood is even stronger. For a full comparison see our ThermoWood vs Siberian larch guide.
How to Reduce the Cost of ThermoWood Cladding
If ThermoWood is your preferred specification but the budget is tight, here are the most effective ways to reduce the total project cost without compromising performance:
- Choose shiplap or feather edge profile rather than shadow gap — saves £15–£20 per m² on materials, same ThermoWood performance
- Use ThermoWood on primary elevations only — specify ThermoWood on the most visible front and side elevations and Nordic spruce (treated) on rear or sheltered elevations where it will rarely be seen
- Order accurately — waste from over-ordering is a significant cost on ThermoWood. Measure carefully or send us your drawings for a precise quantity calculation
- Supply only vs supply and install — if you have a competent builder or are self-building, supplying materials only eliminates the installation labour margin
- Avoid peak season — spring and summer installation slots command a premium. Late autumn and winter installations often attract lower labour rates
How much does ThermoWood cladding cost per m² in the UK?
ThermoWood cladding costs approximately £55–£95 per m² for materials in the UK in 2026. Shadow gap costs £60–£80, triple shadow gap £75–£95, shiplap £55–£75, and rainscreen £58–£85 per m². Add £10–£15 per m² for battens, membrane and fixings, and £25–£45 per m² for installation labour.
Is ThermoWood cladding more expensive than Siberian larch?
Yes — ThermoWood is typically 20–40% more expensive than Siberian larch upfront. Siberian larch costs £35–£70 per m² vs ThermoWood at £55–£95 per m². However ThermoWood's zero maintenance requirement means its whole-life cost over 30 years is often comparable to larch when ongoing treatment costs are factored in.
How much does it cost to clad a house with ThermoWood?
A typical UK semi-detached house costs approximately £12,000–£22,000 fully installed in ThermoWood. A detached house typically costs £18,000–£35,000 fully installed. These figures include materials, battens, fixings, labour, and scaffolding.
What ThermoWood profile is most cost-effective?
ThermoWood shiplap 19x140mm at £55–£75 per m² and feather edge 20x140mm at £55–£72 per m² are the most cost-effective profiles — delivering all ThermoWood performance benefits at the lowest material cost in the range. Single shadow gap 19x140mm at £60–£80 is the best-value shadow gap option.
Does ThermoWood cladding cost include fire treatment?
No — standard ThermoWood prices do not include fire retardant treatment. Factory-applied fire treatment to Euroclass B-s1,d0 typically adds 10–20% to the material cost. Request a fire treated quotation separately if your project requires it.
Get an Accurate ThermoWood Cladding Quote
Send us your profile choice, dimensions, and postcode and we will calculate the exact material quantity and provide a precise price. We supply ThermoWood cladding from UK stock with nationwide delivery in 7–14 days — FSC and PEFC certified.