This premium Thermo Ash cladding features a Secret Nailing profile, delivering a seamless finish with no visible fixings. Unlike traditional installation where screws or nails remain exposed, the boards are concealed-fastened to the underlying substructure. The Secret Nailing profile has a face dimension of 20x120mm, making it slightly narrower than a classic Double Rhombus profile.

The boards are suitable for both horizontal and vertical installation and can be mounted treated or untreated. Thermally modified Ash weathers to an even silver-grey.

Thermo Ash features:

🏆 Durability class 1
🌿 special grain
✅ Knot-free
🎨 Light to dark brown with a premium appearance
🔄 Versatile application
📐 Stable and dimensionally true

Thermally modified wood is made permanently resistant to moisture, mould and warping through a high-temperature process — with no chemical additives. The result is a natural, long-lasting cladding for façades and interiors.