Thermowood External Cladding
Thermowood external cladding delivers the durability of modified timber without any chemical preservatives. Heat and steam alone reshape the wood, so the boards resist decay and stay stable once fixed.
Because outdoor work demands the durable grade, we supply Thermowood D rather than the internal-only Thermowood S. As a result, every board reaches your site already rated for exterior use.
Our range covers redwood, spruce, radiata pine and thermo ash, in profiles suited to modern and traditional elevations.
2 products
![SertiWOOD® Thermowood Radiata Pine Clear D – TF38 Shadow Gap Profile (19x142mm) 6 pieces 4.8mtr = 28.8 linear mtrs](data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" width="400" height="300"%3E%3Crect fill="%23f3f4f6" width="400" height="300"/%3E%3Ctext fill="%239ca3af" font-family="sans-serif" font-size="18" dy="10.5" font-weight="bold" x="50%25" y="50%25" text-anchor="middle"%3ENo Image%3C/text%3E%3C/svg%3E)
In Stock
SertiWOOD® Thermowood Radiata Pine Clear D – TF38 Shadow Gap Profile (19x142mm) 6 pieces 4.8mtr = 28.8 linear mtrs
Premium Thermowood Cladding from Timber Focus
Crafted from New Zealand Radiata Pine, the SertiWOOD® Thermowood Clear D range offers a beautifully smooth, modern TF38 Shadow Gap profile ideal for external cladding, façades, interiors, and sauna applications. Thermally modified for superior stability, durability, and weather resistance, it provides a rich golden-brown tone and elegant grain detail.
Total Price
£423.50
Coverage
0.00 m²
Added to cart
In Stock
Clear Thermowood Radiata Pine D Fascia/Cladding Board 19x142mm Finished Size 4.8m Length (Pack of 6 28.8 linear mtrs)
Premium Durability. Natural Warmth. Versatile Performance.
Our Clear Thermowood Radiata Pine D boards offer the perfect blend of beauty and strength. Heat-treated for exceptional stability, durability, and resistance to decay, these boards are ideal for a wide range of uses — from external cladding and fascia to interior applications such as sauna benches and panelling.
Each board is planed square edge (PSE) for a smooth, modern finish, showcasing the natural golden-brown tones of Radiata Pine that can be left to weather gracefully or coated to maintain a fresh look.
Key Features:
Size: 19 x 142mm (planed finished size)
Length: 4.8 metres ( sold in 28.8 linear mtrs bundles)
Clear Grade Radiata Pine – minimal knots, refined appearance
Thermally modified for improved stability and durability
Planed Square Edge (PSE) – smooth, clean, and contemporary finish
Suitable for external and internal use, including sauna applications
Sustainably sourced timber a good alternative for western red cedar
Total Price
£442.75
Coverage
0.00 m²
Added to cart
Thermowood External Cladding FAQs
Common questions about our thermowood external cladding specifications, applications, and ordering.