Tongue and groove thermowood 510cm (22x150mm)

Tongue and Groove Thermowood 510cm (22x150mm)

The Tongue and Groove Thermowood 510cm (22x150mm) is a premium thermally modified wood cladding board designed for outstanding stability, durability and a modern natural appearance. The thermal modification process enhances the wood’s resistance to moisture and significantly reduces dimensional movement, making it ideal for demanding exterior and interior applications.

With dimensions of 5100mm in length, 22mm in thickness and 150mm in width, these boards are perfect for large-scale cladding projects where a clean finish with fewer joints is desired.

Key Benefits

• Thermally modified wood for improved durability.
• Excellent dimensional stability with reduced warping.
• Strong tongue and groove system for a seamless finish.
• Chemical-free heat treatment process.
• Suitable for interior and exterior use.
• Modern natural 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 subframe to ensure long-term performance. Maintain adequate airflow behind the cladding and use stainless steel or corrosion-resistant fixings to prevent staining. Allow the boards to acclimatise before installation for best results.

Maintenance

Thermowood requires minimal maintenance due to its enhanced stability. For exterior use, 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 framework.
2. Allow the 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 designed for exterior applications such as façades, garden buildings and architectural cladding.

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 projects.

Which fixings are recommended?

Stainless steel or corrosion-resistant fixings are recommended for long-term durability.