Ayous Thermowood Cladding Shadow Gap Profile 20mm x 144mm 4.9mt / 4900mm

Ayous Thermowood Cladding Shadow Gap Profile 20mm x 144mm 4.9mt / 4900mmAyous Thermowood cladding in a shadow gap profile offers a clean, modern finish for exterior and interior wall applications. Each board measures 20mm x 144mm and comes in a 4. 9 metre length, making it well suited to residential and commercial projects across the UK. Specifications Property Detail Material Ayous (Triplochiton scleroxylon) Treatment Thermowood (heat treated) Nominal Size 20mm x 144mm Length 4. 9 metres (4900mm) Profile Shadow gap

Ayous Thermowood cladding in a shadow gap profile offers a clean, modern finish for exterior and interior wall applications. Each board measures 20mm x 144mm and comes in a 4.9 metre length, making it well suited to residential and commercial projects across the UK.

Specifications

What it's used for

• Exterior wall cladding on residential and commercial buildings, providing a contemporary shadow-line aesthetic
• Interior feature walls and ceiling linings where a uniform, architectural finish is required
• Garden room, summerhouse, and outbuilding cladding where a thermally modified timber is preferred over preservative-treated alternatives
• Rainscreen cladding systems where the shadow gap detail aids moisture drainage and ventilation behind the boards

Fitting and handling

Before installation, allow the boards to acclimatise on site for at least 48 hours, stacked flat with spacers to allow air circulation on all faces. Fix using stainless steel screws or concealed clip systems to account for seasonal movement, and always pre-drill near board ends to prevent splitting. Thermowood is stable and durable without further treatment, but applying a UV-protective oil or finish will help maintain the original colour and slow the natural greying process.

FAQ

What is Thermowood and why is it used for cladding?

Thermowood is timber that has been heat-treated at temperatures above 180 degrees Celsius in a controlled, steam environment. The process reduces the moisture content and modifies the cell structure, improving dimensional stability and natural durability without the use of chemical preservatives. This makes it a practical choice for exterior cladding in the UK climate.

Does Ayous Thermowood cladding need painting or treating before fitting?

No treatment is required before fitting. The thermowood process gives Ayous adequate natural durability for exterior use. If you want to preserve the warm brown colour rather than allow the boards to weather to a silver-grey, apply a UV-stabilising oil after fitting and reapply periodically according to the manufacturer's guidance.

What fixing method is recommended for shadow gap cladding on an exterior wall?

For exterior applications, stainless steel screws driven face-down through the top edge of each board, concealed by the overlapping shadow gap of the next board, give a clean finish and resist corrosion. Alternatively, a concealed clip system designed for thermally modified timber can be used. Always fix to treated battens with adequate ventilation behind the boards.

Browse our slatted and cladding range for complementary profiles and timber species. Nottage Timber Merchants supply across Bridgend and South Wales, with next-day delivery available to many local areas. Contact us directly for trade quantities and cut-to-length enquiries.