Tongue and groove thermowood 270cm (22x150mm)

Tongue and Groove Thermowood 270cm (22x150mm)

The Tongue and Groove Thermowood 270cm (22x150mm) is a high-performance, thermally modified softwood cladding board designed for superior stability, durability and a natural aesthetic finish. Through a heat-treatment process without chemicals, the wood becomes more dimensionally stable and resistant to moisture, making it an excellent choice for both exterior and interior applications.

With dimensions of 2700mm in length, 22mm in thickness and 150mm in width, these boards offer a robust and modern cladding solution suitable for architectural façades, garden buildings and decorative interior walls.

Key Benefits

• Thermally modified wood for improved durability.
• Increased resistance to moisture and warping.
• Stable tongue and groove connection for a clean finish.
• Chemical-free heat treatment process.
• Suitable for exterior and interior use.
• Natural, modern wood appearance.
• Strong 22mm thick profile for long-term performance.

Applications

This thermowood tongue and groove cladding is ideal for a wide range of projects, including:

• Facade cladding
• Garden rooms
• Saunas
• Summer houses
• Cabins
• Exterior walls
• Interior feature walls
• Architectural timber designs

Specifications

Installation

Install the boards onto a ventilated and level timber framework. Ensure adequate airflow behind the cladding to maximise performance and longevity. Use stainless steel or corrosion-resistant fixings to secure the boards and avoid staining. For best results, allow the thermowood to acclimatise before installation.

Maintenance

Thermowood requires minimal maintenance due to its improved stability. For exterior use, applying a UV-protective finish is recommended to preserve the natural colour. Without treatment, the wood will gradually weather to a silver-grey patina, which is a natural and aesthetic process.

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How to Install Thermowood Tongue and Groove Cladding

1. Prepare a ventilated and straight subframe.
2. Allow boards to acclimatise before installation.
3. Install a breathable membrane if required.
4. Start mounting from the bottom upwards.
5. Connect boards using the tongue and groove system.
6. Fix with stainless steel or corrosion-resistant screws.
7. Ensure proper ventilation behind the cladding.

Frequently Asked Questions

What is Thermowood?

Thermowood is wood that has been heat-treated at high temperatures without chemicals to improve durability, stability and resistance to moisture.

Is Thermowood suitable for outdoor use?

Yes. It is specifically designed for exterior applications such as façades, garden buildings and cladding systems.

Does Thermowood need to be treated?

It is not required, but applying a UV-protective finish helps preserve its original colour. Otherwise, it will naturally turn grey over time.

Can it be used indoors?

Yes. It is also ideal for interior feature walls, saunas and decorative timber applications.

Which fixings should be used?

Stainless steel or corrosion-resistant fixings are recommended to ensure long-term durability and prevent staining.