Diameo 2018 Diamond Hybrid WPC Aluminum Fin (4 3/4″ x 1 1/4″)
The Geolam Diameo 2018 is a diamond-profile hybrid architectural element measuring 4 3/4″ x 1 1/4″, combining an anodized aluminum alloy core (A6063S-T5 Series 6000) with a wood/polypropylene composite (WPC) outer skin through Geolam’s exclusive co-extrusion process. Its distinctive faceted cross-section catches light at shifting angles across the profile face, producing dynamic shadow lines and visual depth that flat rectangular profiles cannot achieve. At only 0.95 lb/ft, the Diameo 2018 is one of the lightest profiles in the Geolam range, making it well suited to large-span decorative screen systems, louvered façade accents, and brise-soleil applications where a refined, textured wood-grain surface and low weight are priorities. Non-combustible per ASTM E-136 and available in custom lengths up to 19 ft 8 in.
✓ 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 | 4 3/4″ x 1 1/4″ / 120 mm × 30 mm |
| Weight | 0.95 lb/ft / 1.42 kg/lm |
| Standard Length | 9 ft 10 in / 3.0 m |
| Custom Lengths | 7 ft to 19 ft 8 in / 2.15 m to 6 m |
| Fire Rating | Non-combustible (ASTM E-136) |
| End Caps | Yes, WPC or ASA |
| Minimum Order | 1,600 lineal ft (all colors) |
Available Finishes
Standard Colors (min. 1,600 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.
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Key Benefits
| Authentic Wood Appearance | The Diameo 2018’s faceted diamond cross-section creates shifting shadow lines and light variation across its sanded WPC grain surface that flat profiles cannot replicate, delivering a dynamic, textured wood aesthetic across decorative screens and louvered façade systems. |
| Non-Combustible | Certified non-combustible per ASTM E-136 (appendix), making the Diameo 2018 suitable for fire-regulated commercial, high-rise, and institutional projects. |
| Zero Maintenance | The Diameo 2018 never requires staining, sealing, or painting. It resists UV fading, moisture, and weathering without any periodic treatment throughout its full service life. |
| Performance | The aluminum alloy core delivers a secondary moment of 45.61 cm⁴ along the profile’s length axis at only 0.95 lb/ft, making the Diameo 2018 one of the lightest performing profiles in the Geolam range for large-span screen and fin applications. |
| Custom Lengths | Available from 7 ft to 19 ft 8 in (2.15 m to 6 m), enabling clean unjointed runs across decorative screens, brise-soleil fins, and large-format louvered façade applications. |
Applications
Commonly used for
- Decorative fins & louvered screens
- Brise-soleil & sunshade systems
- Exterior façade accents
- Privacy screens
- Pergolas
- Interior feature walls & ceiling elements
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) |
| Core | Anodized aluminum alloy A6063S-T5 Series 6000 |
| Profile Shape | Diamond (faceted cross-section) |
| Dimensions | 4 3/4″ x 1 1/4″ / 120 mm × 30 mm |
| Section Tolerances | +0.5 / -2.0 mm |
| Weight | 0.95 lb/ft / 1.42 kg/lm |
| Standard Length | 9 ft 10 in / 3.0 m |
| Custom Lengths | 7 ft to 19 ft 8 in / 2.15 m to 6 m |
| Surface Finish | Sanded |
| End Caps | Yes, WPC or ASA, glued with Sikaflex Crystal Clear or 3M DP-8010 |
| Connectors | Yes, straight and corner. Minimum order: 100 pieces |
| 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 | 4.96 cm⁴ / 45.61 cm⁴ |
| Section Modulus Z+x / Z-x | 3.81 cm³ / 3.81 cm³ |
| Section Modulus Z+y / Z-y | 7.90 cm³ / 7.90 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 | Aluminum-cutting chip saws only. Max 2 m/min. Do not use grinders or chainsaws. |
| Expansion gaps | Pre-drilled holes 2–4 mm wider than bolt shaft. Washers required. 0.92 mm/m expansion per 40°C difference. |
| End caps | Glue WPC or ASA end caps with Sikaflex Crystal Clear or 3M DP-8010. Keep four weep holes unblocked. Minimum order: 100 pieces. |
| Connectors | Straight connector (20 cm) for straight runs. Corner connectors for 90° joins with a nearly invisible joint. Minimum order: 100 pieces. |
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 | ✓ Up to 19’8″ | ✗ 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 2018 made of? | The Diameo 2018 is co-extruded with an anodized aluminum alloy core (A6063S-T5, Series 6000) and a wood/polypropylene composite (WPC) outer skin, producing a diamond-shaped profile with a sanded wood-grain surface on all faceted faces. |
| What makes the diamond profile different? | The Diameo 2018's faceted cross-section catches and reflects light at different angles as viewing position changes, creating dynamic shadow lines and visual depth across decorative screens and louvered façade systems that flat rectangular profiles cannot achieve. |
| Is it fire-rated? | Yes. The Diameo 2018 is certified non-combustible per ASTM E-136 (appendix), meeting fire safety requirements for commercial, multi-family, and institutional projects. |
| What finishes are available? | Four standard colors with a 1,600 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 2018's diamond profile creates striking light and shadow effects on interior feature walls, ceiling screens, and decorative partition elements where a refined, textured wood-grain surface is the design intent. |
Downloads & Documents
| Diameo 2018 Datasheet | Download PDF |
| Installation & Maintenance Guide | Download PDF |
| CAD Drawings | View |
| Submittal Documentation | View |
| Tests & Certifications | View |
