Tongue and groove thermowood 450cm (22x150mm)

Tongue and Groove Thermowood 450cm (22x150mm)

The Tongue and Groove Thermowood 450cm (22x150mm) is a premium thermally modified wood cladding board designed for excellent durability, dimensional stability and a modern natural appearance. The thermal modification process improves resistance to moisture and reduces movement in the wood, making it highly suitable for both exterior and interior applications.

With dimensions of 4500mm in length, 22mm in thickness and 150mm in width, these boards offer a strong and versatile cladding solution for façades, garden structures and architectural timber projects.

Key Benefits

• Thermally modified wood for enhanced durability.
• Improved stability and reduced warping or swelling.
• Strong tongue and groove connection for a seamless finish.
• Chemical-free heat treatment process.
• Suitable for interior and exterior use.
• Natural and modern wood appearance.
• Robust 22mm thick profile for long-term strength.

Applications

This thermowood tongue and groove cladding is suitable 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 on a ventilated and level timber framework to ensure optimal performance and longevity. Allow sufficient airflow behind the cladding and use stainless steel or corrosion-resistant fixings to prevent staining. It is recommended to acclimatise the boards before installation for best results.

Maintenance

Thermowood requires minimal maintenance due to its improved stability. For exterior applications, a UV-protective oil can be applied to preserve the original colour. Without treatment, the wood will naturally weather to a silver-grey patina over time.

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How to Install Thermowood Tongue and Groove Cladding

1. Prepare a straight and ventilated timber subframe.
2. Allow boards to acclimatise before installation.
3. Install a breathable membrane if required.
4. Start fitting from the bottom upwards.
5. Connect boards using the tongue and groove profile.
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 moisture resistance.

Is Thermowood suitable for outdoor use?

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

Does Thermowood need maintenance?

Only minimal maintenance is required. A UV-protective finish can be applied, otherwise it will naturally grey over time.

Can it be used indoors?

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

Which fixings are recommended?

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