Lunawood Siding / Cladding - Sharp HF 20×142, 1x6 Siding (Luna Trim)
About Lunawood Sharp HF 20x142 Siding (Luna Trim)
Luna Sharp HF 20x142 (formerly Luna Trim) is a premium ThermoWood cladding made from Nordic Spruce, designed for clean, modern facades. The profile includes a V-shaped groove on the tongue for Hidden Fixing (HF), creating narrow shadow lines and an elegant finish with no visible screw holes.
Sharp HF Profiles and Actual Sizes
| Profile name | Length | Actual size | Lead Time |
|---|---|---|---|
| Sharp HF (Hidden Fixing) | 3.6 m to 5.1 m | 20 mm x 142 mm (1x6) | Varies |
Linear metres per m2: 8.10
Sharp HF 20x142 Specifications
Size
20 mm x 142 mm (1x6). Lengths: 3.6 m to 5.1 m.
Species
Nordic Spruce.
Class
LunaThermo-D.
Surface
Planed.
Performance
Dimensionally stable, durable in all climates, resin-free in high temperatures, and 100% chemical-free. Low maintenance when installed according to Lunawood instructions. Left untreated outdoors, it develops a natural silver-grey patina. Maintaining the original brown tone requires a UV-protected, pigmented surface treatment.
Fastening System (Exact Recommendation)
- Primary fixing (Hidden Fixing): Use stainless steel nails, installed above the V-groove (one fixing at each support batten intersection).
- Starting row: A starting clip can be used on the first row.
- Recommended support spacing: 600 mm.
- Board joints: Use a 30° scarf joint and keep the joint area at least 50 mm away from the nearest support battens on both sides.
- Fastener depth: Fasten nails/screws to the correct depth to avoid surface damage.
When Screws Are Needed (Starter/Finishing Boards, Trims, Repairs)
- Screws: Exterior-grade stainless steel self-drilling screws, minimum AISI 304 (A2).
- Screw length: Greater than 2x the cladding thickness (for 20 mm cladding: minimum 40 mm).
- Pre-drilling: Pre-drill when the fixing point is less than 70 mm from the end of the board (pilot diameter: 0.5Ø to 0.8Ø, where Ø is screw diameter).
Installation
- Installation Guideline (Hidden Fixing / Hidden Nailing)
- Quick Guide for Installation of Lunawood Facade
- Installation Guide for Lunawood Facade (ENG)
Technical Resources
- Lunawood Thermowood Guideline (Professionals)
- Lunawood Thermowood Guideline (Interior)
- Environmental Product Declaration (EPD)
Warranty
Lunawood offers a 20-year warranty for projects in EU countries and in countries that accept the EU standard EN 335, when used on facades and interior walls and ceilings. Warranty is valid for new projects that are registered and approved by Lunawood. To activate the warranty, contact your local Lunawood Partner.
Fire Protection
This product is available with fire protection in Euroclass B-s1,d0 (EN 13501).
ⓘ 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.
About Lunawood Sharp HF 20x142 Siding (Luna Trim)
Luna Sharp HF 20x142 (formerly Luna Trim) is a premium ThermoWood cladding made from Nordic Spruce, designed for clean, modern facades. The profile includes a V-shaped groove on the tongue for Hidden Fixing (HF), creating narrow shadow lines and an elegant finish with no visible screw holes.
Sharp HF Profiles and Actual Sizes
| Profile name | Length | Actual size | Lead Time |
|---|---|---|---|
| Sharp HF (Hidden Fixing) | 3.6 m to 5.1 m | 20 mm x 142 mm (1x6) | Varies |
Linear metres per m2: 8.10
Sharp HF 20x142 Specifications
Size
20 mm x 142 mm (1x6). Lengths: 3.6 m to 5.1 m.
Species
Nordic Spruce.
Class
LunaThermo-D.
Surface
Planed.
Performance
Dimensionally stable, durable in all climates, resin-free in high temperatures, and 100% chemical-free. Low maintenance when installed according to Lunawood instructions. Left untreated outdoors, it develops a natural silver-grey patina. Maintaining the original brown tone requires a UV-protected, pigmented surface treatment.
Fastening System (Exact Recommendation)
- Primary fixing (Hidden Fixing): Use stainless steel nails, installed above the V-groove (one fixing at each support batten intersection).
- Starting row: A starting clip can be used on the first row.
- Recommended support spacing: 600 mm.
- Board joints: Use a 30° scarf joint and keep the joint area at least 50 mm away from the nearest support battens on both sides.
- Fastener depth: Fasten nails/screws to the correct depth to avoid surface damage.
When Screws Are Needed (Starter/Finishing Boards, Trims, Repairs)
- Screws: Exterior-grade stainless steel self-drilling screws, minimum AISI 304 (A2).
- Screw length: Greater than 2x the cladding thickness (for 20 mm cladding: minimum 40 mm).
- Pre-drilling: Pre-drill when the fixing point is less than 70 mm from the end of the board (pilot diameter: 0.5Ø to 0.8Ø, where Ø is screw diameter).
Installation
- Installation Guideline (Hidden Fixing / Hidden Nailing)
- Quick Guide for Installation of Lunawood Facade
- Installation Guide for Lunawood Facade (ENG)
Technical Resources
- Lunawood Thermowood Guideline (Professionals)
- Lunawood Thermowood Guideline (Interior)
- Environmental Product Declaration (EPD)
Warranty
Lunawood offers a 20-year warranty for projects in EU countries and in countries that accept the EU standard EN 335, when used on facades and interior walls and ceilings. Warranty is valid for new projects that are registered and approved by Lunawood. To activate the warranty, contact your local Lunawood Partner.
Fire Protection
This product is available with fire protection in Euroclass B-s1,d0 (EN 13501).
ⓘ 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.