Diameo 2023 Large-Scale Diamond Hybrid WPC Aluminum Fin (11 3/4″ x 2 3/8″)
The Geolam Diameo 2023 is a large-format diamond-profile hybrid architectural element measuring 11 3/4″ x 2 3/8″, produced by internally bolting Geolam hybrid profiles together to form a single wide, deep board with an anodized aluminum alloy core (A6063S-T5 Series 6000) and sanded wood/polypropylene composite (WPC) outer skin. Its distinctive faceted cross-section at 11 3/4″ wide commands immediate visual presence, casting bold shadow lines and dynamic light variation across decorative screen systems and large-scale exterior façade applications that flat profiles cannot replicate. A secondary moment of 1,452.49 cm⁴ along its length axis makes it one of the most capable profiles in the Diameo range for large-span fin and louvered screen installations. Non-combustible per ASTM E-136 and available in custom lengths only with zero maintenance across its full service life.
✓ Hybrid Aluminum/WPC
✓ Non-Combustible (ASTM E-136)
✓ Zero Maintenance
✓ Diamond Profile: Dynamic Shadow Lines
✓ Non-Combustible (ASTM E-136)
✓ Zero Maintenance
✓ Diamond Profile: Dynamic Shadow Lines
Key Specifications
| Dimensions | 11 3/4″ x 2 3/8″ / 300 mm × 60 mm |
| Weight | 4.99 lb/ft / 7.43 kg/lm |
| Length | Custom lengths only. Contact us for available lengths. |
| Fire Rating | Non-combustible (ASTM E-136) |
| End Caps | No |
| Connectors | No |
| Minimum Order | 800 lineal ft (all colors) |
Available Finishes
Standard Colors (min. 800 lineal ft)
Sanded wood-grain finishes that replicate the look of stained hardwood. Sanding finish and shading may vary between production runs.
Teak
Moleskin
Rosewood
EbonyNon-Standard Colors (min. 5,000 lineal ft, 90-day lead time)
Carbon
BilingaCustom colors available (min. 6,000 lineal ft). Sanding finish and shading may vary between production runs.
| Request a Quote |
| Order a Free Sample Box |
| Schedule a Virtual Presentation |
Key Benefits
| Authentic Wood Appearance | The Diameo 2023’s wide 11 3/4″ faceted diamond cross-section catches light at shifting angles across its entire face, producing bold shadow lines and visual depth that flat-profile alternatives cannot achieve, delivering a dynamic, textured wood aesthetic at an architectural scale. |
| Non-Combustible | Certified non-combustible per ASTM E-136 (appendix), making the Diameo 2023 suitable for fire-regulated commercial, high-rise, and institutional projects. |
| Zero Maintenance | The Diameo 2023 never requires staining, sealing, or painting. It resists UV fading, moisture, and weathering without any periodic treatment throughout its full service life. |
| Performance | The internally bolted aluminum alloy core delivers a secondary moment of 1,452.49 cm⁴ along the board’s length axis, with a thermal expansion coefficient of 23.4 μm/m/°C for consistent dimensional stability across all climates and large-span applications. |
| Custom Lengths | Available in custom lengths only, allowing projects to specify exact dimensions and eliminate on-site cutting waste. Contact Geolam for available length options for your project. |
Applications
Commonly used for
- Large-scale decorative fins & screens
- Statement brise-soleil systems
- Exterior façade accents
- Louvered screen systems
- Pergolas
- Interior lobby feature walls
Specified for
- Commercial office & mixed-use developments
- Hospitality: hotels, resorts & restaurants
- Multi-family residential & condominiums
- Retail & entertainment venues
- Institutional & civic buildings
Full Technical Specifications
| Material | Hybrid Aluminum/WPC (co-extruded, internally bolted) |
| Core | Anodized aluminum alloy A6063S-T5 Series 6000 |
| Profile Shape | Diamond (faceted cross-section) |
| Dimensions | 11 3/4″ x 2 3/8″ / 300 mm × 60 mm |
| Section Tolerances | +0.5 / -2.0 mm |
| Weight | 4.99 lb/ft / 7.43 kg/lm |
| Length | Custom lengths only |
| Surface Finish | Sanded |
| End Caps | No |
| Connectors | No |
| Fire Rating | Non-combustible (ASTM E-136 appendix) |
| Thermal Expansion | 23.4 μm/m/°C (20–100°C) |
| Modulus of Elasticity | 68.9 GPa |
| Max Tensile Strength | 186 MPa |
| Secondary Moment Ix / Iy | 92.18 cm⁴ / 1,452.49 cm⁴ |
| Section Modulus Z+x / Z-x | 32.34 cm³ / 32.24 cm³ |
| Section Modulus Z+y / Z-y | 97.81 cm³ / 97.81 cm³ |
| Carbon Footprint | WPC: 1.54 kg CO₂/kg / Profile: 9.005 kg CO₂/kg |
Installation Overview
| Fastening options | InPull nut (M6–M12), blind nut, self-tapping screw, flange bolt, or plug system |
| Cutting (important note) | The Diameo 2023 is assembled from multiple internally bolted hybrid profiles. Boards may only be field-cut within the 2″ section at each end that extends past the end bolts. Do not cut anywhere else along the length as this may compromise the board’s integrity. Use a fine-tooth saw for all cuts. |
| Expansion gaps | Pre-drilled holes 2–4 mm wider than bolt shaft. Washers required. 0.92 mm/m expansion per 40°C difference. |
Geolam Technology VS. Alternative Technologies
See how Geolam compares to the leading alternative materials on the market.
| Parameter | Geolam | AluminumLongboard, Knotwood, Dizal, Lynx | Phenolics / HPLProdema, Fundermax, Trespa | WPCWood’n | Rice Hulls / PVCResysta | Terracotta BaguettesBoston Valley, Terreal | Natural WoodIpé, Cedar, PT |
|---|---|---|---|---|---|---|---|
| Aesthetic | ✓ Authentic wood grain | ✗ Printed finish | ✗ No true woodgrain | ✗ Visible butt joints | ✗ Needs finishing | ✗ Smooth, no grain | ✓ Natural warmth |
| Maintenance | ✓ Zero, clean only | ✗ Annual cleaning log | ✓ Zero, clean only | ✗ Regular cleaning | ✗ Needs refinishing | ✓ Zero, clean only | ✗ Frequent refinishing |
| Fire Rating | ✓ ASTM E136 NC | ✓ ASTM E136 NC | ✗ Class A/B, needs NFPA 285 | ✗ Class A, combustible | ✗ Class A, combustible | ✓ ASTM E136 NC | ✗ Combustible |
| Scratch Resistance | ✓ 35-yr proven, sandable | ✗ Visible scratches | ✗ Visible scratches | ✗ Visible scratches | ✗ Visible scratches | ✗ Visible scratches | ✗ Visible scratches |
| Custom Lengths | ✓ Custom only | ✗ 12’–24′ standard only | ✓ Up to 4′ x 10′ | ✗ 12′ standard only | ✗ 12′ standard only | ✗ 6′ max | ✗ 8’–12′ (species-based) |
| Warranty | ✓ 10-yr non-prorated | ✓ 25–50 yr, may prorate | ✓ 10-yr, prorated finish | ✗ 5-yr (handled abroad) | ✓ 25-yr, no finish warranty | ✓ 30-yr | ✗ None |
| Installation | ✓ Ready to install | ✗ Requires furring | ✗ Requires sub-framing | ✗ Furring & clips | ✗ Specific furring spacing | ✗ Complex, engineered | ✗ Furring typical |
See full comparison charts & videos →
Frequently Asked Questions
| What is the Diameo 2023 made of? | The Diameo 2023 is assembled from multiple Geolam hybrid profiles bolted internally to form a single wide diamond-profile board, with an anodized aluminum alloy core (A6063S-T5, Series 6000) and a sanded wood/polypropylene composite (WPC) outer skin. |
| What makes the diamond profile different? | The Diameo 2023's faceted cross-section catches and reflects light at different angles as viewing position changes, creating bold shadow lines and visual depth across decorative screens and louvered façade systems that flat-profile alternatives cannot achieve. |
| Is it fire-rated? | Yes. The Diameo 2023 is certified non-combustible per ASTM E-136 (appendix), meeting fire safety requirements for commercial, multi-family, and institutional projects. |
| Can it be cut on site? | Only partially. The Diameo 2023 may be shortened by cutting within the 2" section at each end that extends past the internal bolts. Do not cut anywhere else along the board's length as this may compromise its integrity. Please specify your required length when ordering. |
| What finishes are available? | Four standard colors with an 800 lineal ft minimum: Teak, Moleskin, Rosewood, and Ebony. Non-standard colors Carbon and Bilinga require a 5,000 lineal ft minimum and 90-day lead time. Custom colors are available at 6,000 lineal ft minimum. |
| Can it be used indoors? | Yes. The Diameo 2023's wide diamond profile creates striking light and shadow effects on interior lobby feature walls, large decorative fin installations, and statement ceiling elements where a bold, textured wood-grain presence is the design intent. |
Downloads & Documents
| Diameo 2023 Datasheet | Download PDF |
| Installation & Maintenance Guide | Download PDF |
| CAD Drawings | View |
| Submittal Documentation | View |
| Tests & Certifications | View |
