04   Thermowood Species   ·   NZ / CL / AU plantation

The plantation sibling to Scots Pine

Thermo Radiata Pine

Pinus radiata — thermally modified at 212°C

Fast-grown plantation pine from the Southern Hemisphere, same thermowood cycle as our Scots Pine. More consistent year-round supply, slightly wider growth rings, and a pale honey tone after modification.

Plantation cycle

25–30years, seedling to board

Fast-growing, FSC-certified plantations across New Zealand, Chile and Australia. Harvested on structured rotation — no wild forest, no old-growth.

Botanical

Pinus radiata

Density

420–460 kg/m³

Durability

EN 350 Class 2

Service life

25–30 yr Nordic

Chemicals

None — heat & steam

Species overview

Plantation pine, Nordic kiln.

Pinus radiata grows on structured 25–30 year plantation cycles in New Zealand, Chile and Australia — some of the fastest sustainably-managed softwood cycles on earth. Boards reach our Gandhidham kiln FSC-certified at source, kiln-dried to 10–12% moisture.

After the ThermoWood-D cycle at 212°C under steam, radiata moves from EN 350 durability class 4 (slightly durable) to class 2 (durable) — same endpoint as Scots Pine. The honest difference between the two is origin and grain character, not performance.

Plantation area

~4M ha

Globally, concentrated in NZ, Chile, Australia. FAO Planted Forests data.

Chain of custody

FSC CoC

Every board traces back to a specific plantation coupe. BFP cert SCS-COC-006930.

Full specification

Thermo Radiata Pine — raw vs modified.

Every value below is sourced from an independently published technical standard or the ThermoWood Association technical handbook. Nothing is estimated or marketing-derived.

Values double-verified
Property
Raw Radiata Pine
After Thermowood-D
Source
Equilibrium moisture content
~12%
4–6%
ThermoWood Handbook, Section 2.2
Dimensional movement
Typical plantation softwood
50–60% less
ThermoWood Handbook; ISO 21887
Density @ 12% MC
~500 kg/m³
420–460 kg/m³
USDA FPL; ThermoWood Handbook
EN 350 natural durability (heartwood)
Class 4 — slightly durable
Class 2 — durable
EN 350:2016; CEN/TS 15679
Service life, Use Class 3 (above ground)
5–10 years
25–30 yr Nordic data20+ yr Indian climate
ThermoWood Assn; EN 335
Brinell hardness
~1.9 N/mm²
1.6–1.8 N/mm²
EN 1534; USDA FPL
Thermal conductivity
~0.12 W/mK
0.09–0.10 W/mK
ThermoWood Handbook; ~20% lower than raw
Fire reaction (untreated)
Class D-s2,d0
Class D-s2,d0
EN 13501-1; FR-coated on request
Colour
Pale cream to pink
Honey-brown throughout
Caramelised pyrolysis, not surface stain

Primary sources: International ThermoWood® Association technical handbook (Finnish Thermowood Association); USDA Forest Products Laboratory, FPL-GTR-190 Chapter 19; EN 350:2016; EN 335:2013; EN 13501-1:2018; EN 1534:2020 (Brinell hardness); CEN/TS 15679:2007; ISO 21887. Scion NZ published research on P. radiata thermal modification. Independent test reports available per project on request.

Where it goes

Five applications.

01Facade cladding
02Decking
03Wall panelling
04Ceiling slats
05Sauna linings

Full process explanation on the Thermowood range page. Install specifications issued per project — request technical PDF.

Specify Thermo Radiata

See the board before you specify it.

Order free samples, download the technical datasheet, or send us the BOQ. We come back with profile, lead time and pricing. Shipped pan-India from Kaithal.

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