About Lunawood Luna Arctic Sharp HF Siding
Luna Arctic Sharp HF 20×142 Brushed is a premium ThermoWood cladding made from Nordic Spruce, delivered pre-greyed for an even grey tone from day one. The sharp-edged profile with Hidden Fixing (HF) is designed for modern architecture, creating clean shadow lines and a uniform look with no visible fasteners.
Luna Arctic Sharp HF Profiles and Actual Sizes
Coverage: 8.10 m2
Luna Arctic Sharp HF Specifications
Size
20 mm x 142 mm (1×6). Lengths: 3.6 m to 5.1 m (approx. 11’10” to 16’9″).
Species
Nordic Spruce.
Class
LunaThermo-D.
Surface
Brushed, painted (pre-greyed finish).
Performance
Dimensionally stable and durable in all climates. Low maintenance when installed according to Lunawood instructions. The pre-greyed finish is designed to develop naturally over time.
Fastening System (Exact Recommendation)
- Fastener type: Self-drilling exterior screws suitable for the substructure (timber or aluminium)
- Material: Minimum AISI 304 / A2 stainless steel
- Screw length: Minimum 2x cladding thickness (for 20 mm cladding: ≥ 40 mm)
- Hidden Fixing (HF) placement: Use one fixing at each cladding/subframe intersection, installed from the hidden fixing groove
- Angle: Fixings should angle towards the centre of the board to properly seat the groove edge
- Pre-drilling: Pre-drill and countersink to reduce cracking (pilot diameter: 0.5Ø to 0.8Ø, where Ø = screw diameter). Pre-drilling is required when the fixing point is <50 mm from the end of the board
- Finish: Fix to correct depth with screw heads flush to reduce splitting, staining, and moisture traps
Installation
Install on a properly designed ventilated facade/rainscreen assembly and follow Lunawood installation instructions.
Technical Resources
- Installation Guide for Lunawood Facade (ENG)
- Lunawood ThermoWood Description
- Luna Arctic Leaflet
- Environmental Product Declaration (EPD)
ⓘ Lunawood ThermoWood is a natural material with knots, varying texture, wood structure, and colour. Product images are illustrative. Wood ages naturally, and fine cracks or surface checks may appear. Colour may change due to weather and other environmental factors.
