✓ Fast delivery within NL & BE
✓ Secure online ordering & payment
✓ A-quality, competitive prices

Thermo Ash 20x90mm

High-quality facade cladding with durability class 1. Thermo Ash is a hard wood species with a beautiful grain. Available within 1-2 weeks.


Thermo Ash 20x90mm

Thermo Ash wood falls under durability class I. The wood remains dimensionally stable, sturdy, and has a warm color. Without treatment, it develops a beautiful, even greying. It is easy to process, entirely defect-free, and suitable for circular facade cladding. Moreover, it can be applied with an invisible mounting system.

Key specifications:

🌳 Also known as; Ash Wood

🕐 Durability class 5;  after thermal modification treatment, class 1 – 20-25 years untreated

🌍 Origin; Europe

🔥 D (Class B possible after treatment)

👍🏻 Responsible alternative to hardwood, also suitable for decking

👎🏻 Limited availability, mostly short lengths

🚛 Available within 1-2 weeks

European & thermally modified

The wood comes from sustainably managed forests in Europe and undergoes thermal treatment without the addition of chemicals, being heated to a minimum of 215 °C with steam to prevent cracks and splits in the wood. This heat treatment makes the ash wood durable. After thermal treatment, thermal ash is comparable to tropical hardwood of durability class 1. It not only offers increased durability but also improved dimensional stability and better resistance to moisture and wood rot. The warm color of thermal ash ages beautifully and evenly under the influence of wind and weather.


1000mm, 1800mm, 2100mm, 2400mm, 2700mm, 3000mm, 3300mm, 3500mm