ThermoWood® Spruce

Thermo Spruce – rough sawn

• 25 × 75 mm — L 3.60–3.90 m
• 25 × 100 mm — L 3.90 m
• 25 × 150 mm — L 3.60–3.90–4.20–4.50–4.80–5.10 m
• 25 × 200 mm — L 4.50 m
• 32 × 150 mm — L 3.90 m
• 38 × 150 mm — L 4.20–4.50 m
• 50 × 150 mm — L 4.50–4.80 m
• 63 × 200 mm — L 3.90–4.20 m

Thermo Spruce – planed & profiled

• V‑groove cladding board — 18 × 130 mm, L 3.90–4.20–4.50–4.80–5.10–5.40 m
• Triple profile board — 33 × 133 mm, L 3.60–4.20–4.50–4.80–5.10–5.40 m

Ideal for façade cladding and clean, modern wall profiles.

ThermoWood® Spruce offers the following key characteristics:

• environmentally friendly alternative to tropical hardwood (no chemicals used)
• durability class 1–2 (EN 350‑2)
• up to 50% reduction in radial and tangential shrinkage → high dimensional stability
• significantly reduced moisture content
• improved insulation value compared to untreated spruce
• resistant to wood rot
• resistant to insects such as longhorn beetle, Anobium punctatum and Lyctus bruneus
• maintenance‑free (natural greying)
• decorative appearance with a warm honey‑brown tone that gradually weathers
• knots remain visible but darken naturally, giving a refined, authentic look

ThermoWood® Spruce is widely used for lightweight, durable and aesthetic exterior applications:

• fencing and garden partitions
• façade cladding (modern, durable appearance)
• wall and ceiling cladding
• interior finishing
• saunas (resistant to heat and humidity)
• roof edges (fascia boards) and exterior trim
• garden furniture

• Species:Picea abies
• Durability class: 2 (EN 350‑2)
• Density: approx. 450 kg/m³ (approx. 420 kg/m³ for Belgian spruce)
• Bending strength: 71 N/mm²
• Modulus of elasticity: 10,000 N/mm²
• Compression strength: 45 N/mm²
• Shrinkage:
  • Radial: 0.8%
  • Tangential: 2.0–2.9%
• Hardness (Janka):
  • End grain: 2,650 N
  • Longitudinal: 1,570 N
• Certification: PEFC & FSC
• Finish: sawn, planed, profiled