Pacific North-West
Western Red Cedar
Thuja plicata
Durability
54EN 350
25 yrs modelled mean service life
Stability
100WI-INTERNAL
Stability rating: Very high
Fire performance
50EN 13501-1 / EN 1995-1-2
β₀ = 0.65 mm/min · D-s2,d0
Carbon stored
60EN 16449
597 kg CO₂e/m³ stored
Natural durability
75
Maintenance Profile
Use classes untreated
UC
Typical Use Classes
- Density
- 370 kg/m³
- Bending strength
- 68 N/mm²
- Stability
- Very high
- Carbon stored
- 0.72 t CO₂e/m³
- Durability
- DC 2 (durable)
- Service life
- 40–60 yrs façade
- Fire performance
- Euroclass D-s2,d0 · charring 0.67 mm/min
- Cost index
- 100
The figures above are WoodIntel editorial estimates for orientation only. Where a standards-referenced record exists for this species, it is shown below with full provenance.
Standards-referenced record
Western Red Cedar, as the standards define it
Each value below carries its derivation and the standard it comes from. Tap a marker to open the provenance.
- Density at 12 % MC
- 370kg/m³
- Natural durability
- DC 2
- Use classes untreated
- UC 1–3 untreated
- Reaction to fire
- D-s2,d0
- Design charring rate
- 0.65mm/min
- Biogenic carbon stored
- 597kg CO₂e/m³
ProvenancemeaMeasuredpubPublishedderDerivedestModel estimate
Colour ageing
Red-brown → soft silver-grey in 12–24 months
Typical applications
- Premium cladding
- Soffits
- Louvres
- Hospitality
AI recommendation
Best dimensional stability in the set — the right answer where movement tolerance is tight. Extractive leaching stains adjacent light surfaces in the first two winters; detail drainage accordingly.