ThermoWood vertical cladding is a thermally modified timber cladding system designed for modern façades, garden buildings, and commercial architecture where dimensional stability, durability, and clean vertical lines are essential. Manufactured through a high-temperature modification process, ThermoWood offers improved resistance to moisture, reduced movement, and a long service life without chemical treatments.

ThermoWood Vertical Cladding Range

Our ThermoWood vertical cladding range includes carefully selected profiles suitable for vertical installation, compatible with both direct-fix and ventilated rainscreen systems. All boards are supplied kiln-dried and precision-machined for consistent installation results.

Key Benefits of ThermoWood Vertical Cladding

• Excellent dimensional stability for vertical applications
• Reduced swelling and shrinkage compared to untreated timber
• Suitable for contemporary architectural designs
• Compatible with ventilated rainscreen systems
• Low-maintenance performance when left to weather naturally
• Chemical-free thermal modification process

Technical Specifications

• Material: Thermally modified softwood (ThermoWood)
• Modification process: High-temperature thermal treatment
• Installation orientation: Vertical
• Profile types: Shadow gap, shiplap, and custom vertical profiles
• Durability class: Improved durability compared to untreated softwood
• Moisture resistance: Enhanced moisture stability
• Expected service life: Long-term performance when correctly installed

Typical Use Cases

• Modern residential façades
• Garden rooms and garden offices
• Architect-designed extensions
• Commercial and mixed-use buildings
• Contemporary external feature walls

Installation Overview

ThermoWood vertical cladding is typically installed over treated timber battens with a ventilated cavity to allow airflow behind the boards. Vertical installations often use horizontal battens, with fixings positioned to allow for controlled movement. The system is compatible with rainscreen construction and concealed or face-fixed fixing methods depending on profile selection.

ThermoWood Vertical Cladding Compared

Vertical ThermoWood cladding offers improved stability compared to untreated softwood and a more consistent appearance than many traditional species. When compared with alternative profiles such as ThermoWood shiplap cladding or shadow gap timber cladding, vertical systems emphasise clean lines and modern architectural rhythm while maintaining the same material performance benefits.

UK Standards, Compliance & Sustainability

ThermoWood is produced using a chemical-free modification process and is suitable for projects where sustainability and material performance are key considerations. When specified as part of a complete external wall system, ThermoWood vertical cladding can be detailed to meet UK Building Regulations requirements, including moisture management and durability expectations. Fire performance requirements should always be assessed at system level where applicable.

Frequently Asked Questions

Is ThermoWood suitable for vertical cladding?

Yes. ThermoWood’s enhanced dimensional stability makes it particularly suitable for vertical cladding installations when installed correctly.

Does ThermoWood require regular maintenance?

ThermoWood can be left untreated to weather naturally, or it can be finished with protective coatings if a consistent colour is required.

Can ThermoWood vertical cladding be used on residential buildings?

ThermoWood vertical cladding is commonly used on residential façades, extensions, and garden buildings, subject to correct detailing and system design.

Is ThermoWood environmentally friendly?

ThermoWood is produced without chemical preservatives and is sourced from responsibly managed forests.

Related ThermoWood Cladding Options

• ThermoWood shiplap boards
• Shadow gap timber cladding

To explore the full range of available products, view our ThermoWood boards.

For broader material guidance, see our Thermally modified timber cladding guide.