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Grey reflective glass (Euro Grey, Dark Grey, Silver Grey) with online hard-coat reflective layer for neutral-toned solar control. Visible light transmittance 12-30%, solar reflectance up to 58%. Thickness 4-10mm, max size 3300×6000mm. Ideal for curtain walls, commercial buildings, and residential glazing. CE / ISO 9001 certified. Request FOB quote.
Grey Reflective Glass | Euro Grey, Dark Grey & Silver Grey Solar Control Glass
Neutral Solar Control for Contemporary Architecture – Euro Grey, Dark Grey & Silver Grey
Grey reflective glass is an online hard‑coat reflective glass produced by chemical vapor deposition (CVD), where a uniform metal oxide layer is chemically fused to high‑quality float glass. The result is a neutral, sophisticated grey appearance that integrates seamlessly into modern architectural designs while providing effective solar control. Unlike offline soft‑coat coatings, the online reflective layer is fully bonded to the glass, allowing it to be cut, tempered, bent, laminated, and fabricated into insulated glass units without damaging the coating.
Within the grey family, several distinct tones cater to different aesthetic and performance requirements:
| Key Specification | Value |
|---|---|
| Glass Type | Online hard‑coat reflective float glass |
| Color Family | Euro Grey, Dark Grey, Silver Grey, Charcoal Grey |
| Thickness Range | 4mm, 5mm, 6mm, 8mm, 10mm |
| Maximum Size | 3300 × 6000 mm (jumbo); standard 2440 × 3660 mm |
| Coating Position | #2 surface (outboard) recommended for exterior installation |
| Visible Light Transmittance (Euro Grey 6mm) | ~20.5% |
| Visible Light Reflectance (Euro Grey 6mm) | ~47.0% |
| Solar Reflectance (Euro Grey 6mm) | ~34.0% |
| Shading Coefficient (SC) | 0.40 – 0.58 (depending on tone & thickness) |
| Emissivity (ε) | < 0.1 |
| Processing | Cutting, tempering, heat strengthening, bending, laminating, IGU assembly |
| Certifications | CE, ISO 9001, CCC, SGS |
| MOQ | 1 × 20′ FCL (~20–27 tons) |
| Lead Time | 2–4 weeks after deposit |
💡 Grey reflective glass accounts for the largest share of reflective glass demand globally because its neutral tone works with virtually any architectural style. It is the default specification for commercial office towers, mixed‑use developments, and residential high‑rises where a timeless, non‑trendy appearance is desired.
Unlike colored reflective glass (blue, green, gold), grey does not impose a color bias on the building. It reflects the surrounding sky and landscape in muted tones, allowing the architecture itself to speak. This neutrality makes grey reflective glass the first choice for:
Grey reflective glass strikes an excellent balance between heat rejection and daylight admission:
| Tone (6mm) | Visible Light Transmittance | Solar Heat Gain Coefficient | Shading Coefficient |
|---|---|---|---|
| Euro Grey | ~20.5% | ~0.45 | ~0.52 |
| Dark Grey | ~14.0% | ~0.35 | ~0.40 |
| Silver Grey | ~30.0% | ~0.50 | ~0.58 |
| Charcoal Grey | ~12.0% | ~0.30 | ~0.34 This range allows architects to tune the building envelope to local climate conditions and orientation. |
The reflective coating creates a one‑way mirror effect during daylight hours: outsiders see a mirrored grey surface, while occupants enjoy clear outward views. This provides natural privacy without curtains or blinds, especially valuable for ground‑floor retail, office spaces, and hotel guestrooms.
Grey reflective glass blocks >90% of UV radiation, protecting interior finishes, artwork, and merchandise from fading – a critical benefit for retail display windows, museum glazing, and hospitality interiors.
The online CVD coating is chemically fused to the glass, offering:
| Glass Type | Thickness | Visible Light Trans. | Visible Light Ref. | Direct Solar Trans. | Direct Solar Ref. | Total Solar Energy Trans. | Shading Coeff. |
|---|---|---|---|---|---|---|---|
| Euro Grey | 5mm | 24.0% | 44.0% | 38.0% | 32.0% | 47.0% | 0.54 |
| Euro Grey | 6mm | 20.5% | 47.0% | 34.0% | 34.0% | 44.0% | 0.51 |
| Euro Grey | 8mm | 17.0% | 50.0% | 30.0% | 36.0% | 41.0% | 0.47 |
| Dark Grey | 5mm | 16.0% | 52.0% | 28.0% | 38.0% | 38.0% | 0.44 |
| Dark Grey | 6mm | 14.0% | 55.0% | 25.0% | 40.0% | 35.0% | 0.40 |
| Silver Grey | 5mm | 32.0% | 40.0% | 42.0% | 30.0% | 50.0% | 0.58 |
| Silver Grey | 6mm | 30.0% | 42.0% | 40.0% | 31.0% | 48.0% | 0.55 |
| Charcoal Grey | 6mm | 12.0% | 58.0% | 22.0% | 42.0% | 30.0% | 0.34 Values are indicative based on industry standard formulations. Exact performance depends on manufacturer composition and glass substrate. Request project‑specific IGU calculations for final specifications. |
| Thickness | Max Size | Typical Application |
|---|---|---|
| 4mm | 2440 × 3660 mm | Interior partitions, decorative glazing |
| 5mm | 2440 × 3660 mm | Windows, doors, shopfronts |
| 6mm | 3300 × 6000 mm | Curtain walls, façade panels (most popular) |
| 8mm | 3300 × 6000 mm | Structural glazing, spandrel panels |
| 10mm | 3300 × 6000 mm | High‑performance façades, laminated IGU Standard stock sizes: 1220×1830mm, 1830×2440mm, 2134×3050mm, 2140×3300mm, 2250×3210mm, 2440×3660mm, 3300×2140mm, 3300×2250mm, 3300×2440mm. Custom jumbo sizes available on request. |
Grey reflective glass dominates commercial curtain wall projects because its neutral tone harmonizes with any building material – aluminum, steel, concrete, brick, or stone. From London to New York to Dubai, grey reflective curtain walls define the modern corporate skyline.
Corporate headquarters and speculative office developments specify grey reflective glass for its professional appearance, solar control performance, and occupant comfort. The neutral color ensures the building remains marketable for decades.
Retail, residential, and hotel components within a single development can all use grey reflective glass, creating visual unity across different programmatic zones.
Apartment towers use grey reflective glass for balconies, windows, and façade panels. The neutral tone appeals to a broad buyer demographic and supports higher resale values.
Hotels specify grey reflective glass for guestroom windows, lobby curtain walls, and restaurant glazing. The privacy effect during daytime is particularly valued in urban locations.
Grey reflective glass provides a sophisticated backdrop for merchandise while controlling solar heat gain. The one‑way mirror effect draws customers' attention to the display.
Universities, libraries, museums, and government buildings choose grey reflective glass for its understated elegance and energy performance.
Grey reflective glass (online hard‑coat) can be fully processed:
⚠️ Installation note: The coated surface should face outward (toward the exterior) during installation, while the uncoated surface faces inward.
| Parameter | Specification |
|---|---|
| Glass Substrate | High‑quality float glass |
| Coating Type | Online CVD metal oxide hard coat |
| Color Options | Euro Grey, Dark Grey, Silver Grey, Charcoal Grey |
| Thickness | 4mm, 5mm, 6mm, 8mm, 10mm |
| Maximum Size | 3300 × 6000 mm |
| Minimum Size | 200 × 300 mm |
| Emissivity (ε) | < 0.1 |
| Visible Light Transmittance | 12–30% (varies by tone & thickness) |
| Solar Reflectance | Up to 58% (Charcoal Grey) |
| Shading Coefficient (SC) | 0.34–0.58 |
| UV Blockage | > 90% |
| Processing | Cut, temper, heat‑strengthen, bend, laminate, IGU |
| Edgework | Polished, beveled, seamed, arrissed |
| Standards | EN 1096, CE, ISO 9001, CCC, SGS |
| Packaging | Seaworthy plywood crates with paper interleave |
| MOQ | 1 × 20′ FCL (~20–27 tons) |
| Lead Time | 2–4 weeks |
Indicative FOB pricing (USD per m², bulk packaging included):
| Thickness | Grey Reflective Glass | FOB Indicative Range |
|---|---|---|
| 4mm | $3.00 – $4.50 | $4–7 |
| 5mm | $3.80 – $5.50 | $5–9 |
| 6mm | $4.50 – $6.50 | $6–11 |
| 8mm | $6.00 – $8.50 | $9–15 |
| 10mm | $8.00 – $12.00 | $12–20 |
Final FOB pricing varies with: Color tone (Euro Grey, Dark Grey, Silver Grey, Charcoal Grey) Thickness and jumbo size requirements Processing complexity (tempering, laminating, IGU) Order volume (FCL vs. LCL) 💡 For a precise project quotation, send us your curtain wall elevation drawings or glass schedule.
Q1: What is the difference between grey reflective glass and grey tinted glass?
Grey reflective glass has a metal oxide coating that actively reflects solar radiation, providing superior solar control and a mirror‑like appearance. Grey tinted glass is body‑tinted throughout the glass thickness; it absorbs solar heat rather than reflecting it, resulting in higher heat gain and a darker appearance from both sides.
Q2: Can grey reflective glass be tempered?
Yes. The online CVD coating is chemically fused to the glass and withstands the tempering process without degradation.
Q3: Which side should the coating face?
The coated surface should face outward (exterior) to maximize solar reflection. The uncoated surface faces inward.
Q4: What is the typical visible light transmittance?
Euro Grey 6mm: ~20.5%; Dark Grey 6mm: ~14%; Silver Grey 6mm: ~30%; Charcoal Grey 6mm: ~12%.
Q5: How much solar heat can grey reflective glass block?
Shading coefficients range from 0.34 (Charcoal Grey) to 0.58 (Silver Grey). This means 66% to 42% of solar heat is reflected or rejected.
Q6: Can grey reflective glass be used in insulating glass units (IGU)?
Yes. It is commonly used as the exterior lite (#2 surface) in double or triple IGUs, combined with Low‑E glass on interior surfaces for maximum energy efficiency.
Q7: What is the maximum size?
Standard jumbo size up to 3300 × 6000 mm.
Q8: Which grey tone should I choose for my project?
Tell us your project requirements and we'll respond within 48 hours with a competitive FOB quotation.
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With over 20 years of experience and expertise in glass manufacturing and processing, we are seasoned glass specialists, ready to answer your questions and provide guidance on product selection, installation, and maintenance.
