ThermoWood Cladding is a thermally modified redwood, heat-treated at over 200°C for improved stability and natural durability. With its rich colour and naturally knotty appearance, it’s ideal for houses, garden buildings, and home offices.

• Random lengths 2.4m+ (SQM orders)

• Coverage: 7.58 lm per m²

• Naturally durable – can be left to weather silver-grey, or finished with UV oil to maintain colour

• We recommend ordering 15–20% extra to allow for wastage and avoid costly redelivery
  
  Technical Specs
  

  • Nominal Size: 25x150mm
  • Finished Size: 19x142mm
  • Face Cover: 132mm
  • Profile: V-Groove & Shadow Gap
  • Lineal metres needed per square metre: 7.58m

  
  

Thermowood Radiata Cladding:

Specification:

• Nominal Size: 25x150mm
• Finished Size: 19x140mm
• Face Cover: 130mm
• Lineal metres needed per square metre: 7.69LM
• Great Alternative to Canadian Western Red Cedar
• Recommended Wastage: 10-15%

Appearance and Texture

Thermowood Radiata Pine undergoes a thermal modification process that enhances its colour and texture. Compared to untreated Radiata, the thermal treatment gives the wood a deeper and more uniform brown tone, often with subtle variations. The treatment accentuates the natural grain of the pine, providing an elegant and textured appearance. This creates a refined and visually appealing cladding option suitable for various design aesthetics.

The thermal treatment also improves the texture, giving the wood a smooth and polished feel, making it an excellent choice for both indoor and outdoor applications as well as saunas. 

Treatment Recommendations

While Thermowood Radiata is naturally durable due to the thermal modification process, applying a protective finish is recommended to maintain its rich appearance. Products such as Osmo UV Oil or Treatex UV Oil can enhance the wood’s natural beauty and help prevent it from weathering to a silvery-gray tone over time.

• Maintenance Schedule: Apply a fresh coat of oil every 2–5 years to preserve the original color.

• If the wood has weathered or the maintenance interval has been missed, the original appearance can be restored with light sanding and reapplication of the oil.

Key Facts

• Durable: Enhanced resistance to decay and weathering due to the thermal modification process.

• Stable: Reduced warping, shrinking, or swelling, making it ideal for varied climates and conditions.

• Sustainable: Thermowood Radiata is often sourced from responsibly managed forests, offering an eco-friendly cladding choice.

Applications

Thermowood Radiata cladding is a versatile and durable option suitable for:

• Residential and commercial exterior walls.

• Interior feature walls or ceilings.

• Saunas and more.

THERMOWOOD:

The ThermoWood we supply is produced by heat treating Redwood to temperatures in excess of 200 degrees Centigrade. During heat treatment, chemical and structural changes occur within the timber which alter and improve some of its basic characteristics. This then creates an environmentally-friendly product which is then resistant to decay. 

TREATMENT:

You do not need to apply any treatment to the timber as it is naturally durable although we recommend using Osmo or Treatex UV Oil to enhance the appearance as this will prevent it from turning silver (which some customers love) it is important to apply a fresh coat every 2 - 5 years to retain the colour. If you do miss this time frame it is quite easy to get it back so don't panic, Just get the sander out!

KEY FACTS:

• Thermally modified
  
• Amazing colouring
  
• Stable
• Perfect for Houses, Home offices and Garden Building
• Available in a range of sizes and patterns in the bespoke section
• We recommend ordering 10-15% extra to allow for wastage