ThermoWood® Ayous

Available dimensions (mm)

• Width: 80–205 mm
• Thickness: 26–205 mm

Available forms

• Rough sawn
• Kiln‑dried to approx. 12% moisture content

Advantages of ThermoWood® Ayous

• Easy to process & versatile in finishing
  The light colour and smooth, even texture make ThermoWood Ayous suitable for a wide range of finishes such as oils, stains and paints. This versatility allows it to fit seamlessly into both contemporary and timeless design styles, indoors and outdoors.
• Lightweight & dimensionally stable
  With its low density, Thermo Ayous is easy to handle without compromising stability. Thermal modification significantly reduces movement caused by fluctuating weather conditions.
• Durable & low‑maintenance
  Thermo Ayous reaches durability class 2, offering strong resistance to moisture, fungi and insects. Surfaces require less frequent treatment, reducing overall maintenance costs.
• Warm and modern aesthetic
  The thermal process gives the wood a warm golden‑ to dark‑brown tone with a uniform appearance. Outdoors, it naturally weathers to an elegant silver‑grey patina.
• Attractive price alternative
  A stable and budget‑friendly option compared to more expensive tropical hardwoods such as padauk, afrormosia and Western Red Cedar.

ThermoWood Ayous is suitable for a wide range of applications, including:

• Exterior cladding
  One of the most popular choices for modern façades thanks to its stability and durability.
• Interior cladding
  Ideal for wall and ceiling panels due to its light weight and refined appearance.
• Saunas
  Highly suitable for pre‑thermo applications; after modification, it performs exceptionally well in warm and humid environments.
• Furniture and interior constructions
  Particularly useful for lightweight designs where dimensional stability is essential.
• Decorative projects
  Both indoors and outdoors, thanks to its warm, homogeneous look.

Species
Ayous – Triplochiton scleroxylon

Country of origin
Cameroon, Democratic Republic of Congo

Physical properties (after thermal modification)

• Average density (12%): approx. 370–390 (up to 450) kg/m³
• Fresh wood: approx. 560 kg/m³
• Specific gravity (12%): ± 400 kg/m³

Mechanical properties

• Modulus of elasticity (E‑modulus): 7,000 N/mm²
• Bending strength: 57 N/mm²
• Compression strength: 29 N/mm²
• Shear strength: 3.6 N/mm²

Thermal and physical values

• Thermal conductivity: 0.14 W/(m·K)
• Shrinkage (KD):
  • Radial: 2.40%
  • Tangential: 5.00%
  • Tangential/radial ratio: 1.70

Durability & stability

• Durability class: 2
• Very low movement (significantly less than untreated Ayous)
• Natural greying to silver‑grey in outdoor use

Colour

• Warm golden‑ to dark‑brown after thermal treatment
• Natural weathering to silver‑grey outdoors