| Material | Thermowood |
| Width | 145mm |
| Thickness | 18mm |
| Face Coverage | 135mm |
| Grade | ??? |
| Treatment |
Untreated, Redwood Thermowood offers excellent durability and natural resistance to decay and insects, making it an ideal choice for external use. Its enhanced thermal modification process improves its stability and resistance to weathering, ensuring reliable performance in exposed outdoor environments. To maintain its natural appearance and extend its lifespan, we recommend applying a suitable wood oil or stain, such as OSMO. This helps to preserve its rich, warm tones while providing additional protection against cracking and the effects of UV exposure. Staining enhances the timber's durability, ensuring it retains its structural integrity and aesthetic appeal over time, making Redwood Thermowood a reliable and long-lasting option for outdoor projects. |
| Finish | Planed Timber |
| Length | Available in 0.9m, 1.2m, 1.8m, 2.4m, 3.0m, 3.6m, 3.9m and 4.2m |
| Buying Guide | Unsure which cladding to go for? Take a read of our full Cladding Buying Guide |
| Type |
Softwood |
| Origin |
Finland |
| Durability |
Class 2 |
| Movement Class |
Small |
| Knots |
Variable |
| Colour |
Deep, rich brown tones that weather to an elegant silver-grey |
| Modified Timber |
Yes, thermally modified |
| Fixings |
Stainless Steel |
| Recommended Wastage |
15-20% due to Brittleness |
| Key Points |
Heat treatment significantly increases durability and stability. |
Thermowood Shadow Gap cladding offers a durable and sustainable solution with a striking modern look. Created through a heat-treatment process, Thermowood is naturally resistant to rot, decay, and insects, providing an eco-friendly alternative to chemically treated timber.
The Shadow Gap profile creates clean, defined lines and a subtle depth that elevates contemporary designs, making it ideal for exterior facades and interior feature walls. Thermowood’s enhanced stability minimises warping, swelling, and shrinking, ensuring a consistent, high-quality finish over time. With its rich, warm tone that can be left untreated or stained to match your design vision, Thermowood Shadow Gap cladding is a perfect choice for builders and architects seeking durability, aesthetic appeal, and environmental responsibility.
Board Run
It's important to tell us which way your cladding will be running as depending on the desired orientation of your cladding, the timber needs to be cut differently.
Vertical run cladding naturally channels water downwards, however if cut incorrectly horizontal profile boards may trap water inside the shadow gaps, making it more susceptible to weather-related issues like rot. To combat this, horizontal boards are cut with a slight angle in the gaps to help the water run off, while vertical boards retain a nice crisp edge.
Key Facts
- Modern Shadow Gap Profile
- Enhanced Durability
- Eco-Friendly
- Dimensional Stability
Other Options
- Redwood Thermowood - Thermowood undergoes a heat treatment process that enhances its durability and stability, making it highly resistant to moisture and rot while being eco-friendly and sustainable
- Redwood Thermowood Loglap - Profiled Version of the cladding
- Iroko Shadow Gap - Iroko Version of the cladding