Solar Control Skylight Glass | Solar Control Glass for Skylight & Roof Glazing – Jumbo Glass
Solar Control Coated Glass for Skylight & Roof Glazing – Engineered to Reject Solar Heat in Hot Climates
Solar control skylight glass is specifically engineered to limit the amount of solar heat that passes through overhead glazing while still admitting useful daylight. Unlike standard Low‑E glass which primarily manages infrared re‑radiation, solar control glass is optimized to block solar radiation at the source – reflecting or absorbing near‑infrared and ultraviolet wavelengths before they can enter the building.
For procurement managers and glazing contractors supplying commercial buildings in tropical and subtropical climates, hotels with extensive roof glazing, shopping malls in sun‑belt regions, and any building where cooling load reduction is the primary objective, solar control skylight glass is the most effective single solution. In hot climates, a well‑specified solar control skylight can reduce peak cooling loads by 30–50% compared to standard clear glass.
💡 Why solar control skylight glass is specified: In hot climates – the Middle East, Southeast Asia, Southern USA, Australia, India, and equatorial Africa – the primary challenge of skylights is not heat loss but heat gain. Solar control glass is the only glazing technology that can reduce SHGC below 0.30 while maintaining adequate daylight transmission. For glass exporters targeting these markets, solar control skylight glass represents a specification‑driven, high‑value product category commanding a 50–100% premium over clear glass.
1. Quick Specification
| Parameter | Standard Clear Skylight | Solar Control Skylight Glass |
|---|
| Technology | No coating | Reflective coating / Absorptive tint / Spectrally selective coating |
| SHGC Range | 0.58–0.63 | 0.15–0.35 |
| VLT Range | 77–90% | 8–50% (depending on coating) |
| U‑Value (IGU) | 2.7 W/m²K | 1.0–1.6 W/m²K |
| gIR (Infrared transmittance) | ~0.80 | 0.05–0.20 |
| Exterior Reflectance | 8% | 15–40% |
| Colour Neutrality | Perfect | Varies by coating type |
| Max IGU Size | ≤2440×6000 mm | ≤3470×18700 mm |
2. Solar Control Skylight Glass Solutions
2.1 Reflective Coated Solar Control Skylight
- Description: Metallic oxide coating applied to glass surface that reflects solar radiation
- Appearance: Mirror‑like exterior finish (silver, bronze, blue, grey, gold)
- SHGC: 0.15–0.30 | VLT: 8–35%
- Best for: Commercial buildings where exterior appearance matters and maximum solar rejection is needed
- Key benefit: Lowest SHGC values available – ideal for extreme hot climates
2.2 Spectrally Selective Solar Control Skylight
- Description: Advanced multi‑layer coating that selectively blocks near‑infrared while maximizing visible light
- Appearance: Neutral colour – similar to Low‑E glass
- SHGC: 0.25–0.35 | VLT: 35–50%
- Best for: Buildings needing good daylight + strong solar control without mirror appearance
- Key benefit: Best balance of daylight and heat rejection – highest LSG ratio
2.3 Body‑Tinted Solar Control Skylight
- Description: Glass coloured throughout with metal oxides during float production
- Appearance: Grey, bronze, blue, green, dark blue
- SHGC: 0.40–0.55 | VLT: 20–50%
- Best for: Moderate solar control where cost is primary concern
- Key benefit: Lowest cost solar control – no coating required
2.4 Tinted + Coated Hybrid Solar Control Skylight
- Description: Body‑tinted glass with additional reflective or spectrally selective coating
- Appearance: Dark exterior with coating colour overlay
- SHGC: 0.12–0.25 | VLT: 8–20%
- Best for: Maximum solar rejection in extreme hot climates
- Key benefit: Combines absorptive and reflective technologies for lowest possible SHGC
2.5 Solar Control Laminated Skylight Glass
- Description: Laminated safety glass with solar control properties (tinted interlayer or coated plies)
- Appearance: Varies by interlayer and coating combination
- SHGC: 0.20–0.35 | VLT: 15–40%
- Best for: Overhead glazing where safety + solar control are both required
- Key benefit: Post‑breakage retention + solar heat rejection in one product
3. Glass Configurations – Solar Control Technologies Compared
3.1 Technology Comparison
| Technology | How It Works | SHGC Range | VLT Range | Colour Neutrality | Cost Premium |
|---|
| Reflective coating | Thin metallic film reflects solar radiation | 0.15–0.30 | 8–35% | Low – coloured appearance | Moderate |
| Spectrally selective coating | Multi‑layer dielectric stack blocks IR, passes visible | 0.25–0.35 | 35–50% | High – neutral appearance | High |
| Body‑tinted glass | Metal oxides in glass absorb solar energy | 0.40–0.55 | 20–50% | Low – coloured glass | Low |
| Tinted + coated hybrid | Absorption + reflection combined | 0.12–0.25 | 8–20% | Very low – dark appearance | Highest |
| Solar control laminated | Tinted interlayer or coated plies | 0.20–0.35 | 15–40% | Moderate | Moderate‑high
|
3.2 Popular Solar Control Colours & Their Performance
| Colour | Technology | SHGC | VLT | Exterior Reflectance | Best For |
|---|
| Silver | Reflective coating | 0.18 | 12% | 35% | Maximum solar rejection |
| Bronze | Body‑tinted | 0.52 | 35% | 8% | Moderate control, warm aesthetic |
| Grey | Body‑tinted | 0.50 | 30% | 8% | Moderate control, neutral aesthetic |
| Blue | Reflective coating | 0.22 | 18% | 28% | Contemporary architecture |
| Green | Body‑tinted | 0.48 | 45% | 8% | Natural appearance, higher VLT |
| Dark Blue | Tinted + coated | 0.15 | 10% | 20% | Extreme solar control |
| Neutral (spectral) | Spectrally selective | 0.30 | 45% | 15% | Best daylight + heat balance |
3.3 LSG Ratio Comparison
| Technology | LSG (Light‑to‑Solar‑Gain Ratio) | Assessment |
|---|
| Clear glass | 1.07 | Poor – lots of heat per unit of light |
| Body‑tinted bronze | 0.71 | Poor – loses too much light for heat blocked |
| Reflective silver | 0.73 | Poor – sacrifices light for heat control |
| Spectrally selective | 1.50–1.80 | Excellent – best light per unit of heat |
| Tinted + coated hybrid | 0.89 | Moderate – extreme heat control but dark |
💡 Key insight: For skylights where daylight is important (most applications), spectrally selective coatings offer the best LSG ratio – meaning occupants get the most usable daylight for every unit of solar heat rejected. Body‑tinted and reflective glasses sacrifice more visible light for the same level of heat control.
4. Safety Performance – Solar Control in Overhead Glazing
4.1 Compatibility with Safety Glass
| Solar Control Type | Can Be Tempered? | Can Be Laminated? | Overhead Code Compliant? |
|---|
| Reflective coating | Yes (coated before tempering) | Yes (coated ply in laminate) | Yes (with laminated inner lite) |
| Spectrally selective | Yes | Yes | Yes |
| Body‑tinted | Yes | Yes | Yes |
| Tinted + coated hybrid | Yes | Yes | Yes |
| Solar control laminated | N/A (already laminated) | N/A | Yes – inherently compliant |
4.2 Load Requirements for Solar Control Skylight IGUs
| Load Type | Typical Value | Solar Control Consideration |
|---|
| Dead load | Glass self‑weight | Tinted glass absorbs more solar energy – slightly warmer |
| Snow load | 0.5–5.0 kN/m² | Determines glass thickness (coating irrelevant) |
| Wind load | 0.5–3.0 kN/m² | Affects max panel size |
| Maintenance load | 0.74–1.5 kN/m | Requires laminated inner lite |
| Thermal stress | Higher for tinted glass | Tinted glass absorbs more solar energy – needs heat treatment |
4.3 Thermal Stress – A Critical Consideration for Tinted Skylights
| Glass Type | Solar Absorption | Thermal Stress Risk | Recommendation |
|---|
| Clear glass | ~8% | Low | Standard tempering sufficient |
| Reflective coated | ~15–25% | Low‑Moderate | Standard tempering sufficient |
| Body‑tinted (bronze/grey) | 40–60% | High | Heat soak test (HST) recommended |
| Tinted + coated hybrid | 50–70% | Very high | Heat soak test (HST) required |
⚠️ Critical note: Body‑tinted and hybrid solar control glasses absorb significantly more solar energy than clear glass. This increases the risk of thermal stress breakage, particularly in skylight applications where shading patterns create uneven heating. Heat soak testing (HST) is strongly recommended for all tinted solar control glass used in overhead applications.
5. Thermal & Solar Performance
5.1 SHGC & U‑Value Comparison
| IGU Configuration | SHGC | U‑Value (W/m²K) | Best For |
|---|
| 6mm Clear + 16Ar + 6mm Clear | 0.583 | 2.7 | Baseline – no solar control |
| 6mm Bronze + 16Ar + 6mm Clear | 0.451 | 2.7 | Moderate solar control, low cost |
| 6mm Grey + 16Ar + 6mm Clear | 0.433 | 2.7 | Moderate solar control, low cost |
| 6mm Reflective Silver + 16Ar + 6mm Clear | 0.177 | 2.4 | Maximum solar rejection |
| 6mm Reflective Blue + 16Ar + 6mm Clear | 0.216 | 2.4 | High solar rejection |
| 6mm Spectral Selective + 16Ar + 6mm Clear | 0.298 | 1.6 | Best daylight + heat balance |
| 6mm Spectral Selective + 16Ar + 6mm Low‑E | 0.283 | 1.2 | Premium thermal + solar |
| 6mm Dark Blue Hybrid + 16Ar + 6mm Clear | 0.149 | 2.4 | Extreme solar control |
5.2 VLT & Exterior Appearance
| IGU Configuration | VLT | Exterior Colour | Reflectance |
|---|
| Clear | 778% | Transparent | 8% |
| Bronze | 355% | Bronze | 8% |
| Grey | 304% | Grey | 8% |
| Reflective Silver | 128% | Silver mirror | 35% |
| Reflective Blue | 184% | Blue mirror | 28% |
| Spectral Selective | 455% | Neutral | 15% |
| Dark Blue Hybrid | 106% | Dark blue | 20% |
5.3 UV Protection
| Glass Type | UV Blockage |
|---|
| Clear glass | ~60% |
| Body‑tinted glass | ~70–85% |
| Reflective coated glass | ~85–95% |
| Spectrally selective coated glass | >95% |
| Solar control laminated glass | >99% |
5.4 Acoustic Performance
| IGU Configuration | Rw (dB) | STC |
|---|
| 6mm Clear + 16Ar + 6mm Clear | 033 | 032 |
| 6mm Tinted + 16Ar + 6mm Clear | 034 | 033 |
| 6mm Reflective + 16Ar + 6mm Clear | 035 | 334 |
| 6mm Spectral Selective + 16Ar + 6mm Laminated | 038 | 037 |
6. Maximum Glass Size – Jumbo Solar Control Skylight Glass
Our jumbo coating line, tempering furnace, and IGU assembly line enable solar control skylight glass at sizes that most suppliers cannot match.
| Parameter | Standard | Jumbo |
|---|
| Max Width | ≤2440 mm | ≤3470 mm |
| Max Height | ≤6000 mm | ≤18700 mm (extreme up to 20800 mm) |
| Max Area | ~15 m² | ~65 m² |
| Coating Types | Reflective, Spectral Selective | Reflective, Spectral Selective, Hybrid |
| Substrate | Clear | Clear / Tinted / Low‑Iron |
| Tinted Glass Available | Bronze, Grey, Blue, Green | Bronze, Grey, Blue, Green, Dark Blue |
| Gas Fill | Air / Argon | Argon / Krypton |
| Spacer | Aluminum | Warm Edge (Stainless Steel / TPS) |
Benefits of Jumbo Solar Control Skylight Glass
| Benefit | Impact on Project |
|---|
| Fewer IGUs per roof area | Faster installation, fewer failure points |
| Uniform coating appearance | Consistent colour across large skylight runs |
| Reduced framing | Lower structural steel cost |
| Fewer thermal bridges | Better whole‑system U‑value |
| Dramatic architectural impact | Large reflective or tinted roof surfaces |
7. Glass Processing for Solar Control Skylight Systems
7.1 Coating Application
| Coating Type | Application Method | Process Notes |
|---|
| Reflective coating | MSVD sputtering (soft coat) or Pyrolytic (hard coat) | Applied to float glass before or after tempering |
| Spectrally selective coating | MSVD sputtering (soft coat only) | Multi‑layer stack – 8–15 layers |
| Hybrid (tinted + coated) | Tinted substrate + MSVD coating | Requires careful thermal management |
7.2 Post‑Coating Processing
| Operation | Notes for Solar Control Glass |
|---|
| Cutting | Standard – coating does not affect cuttability |
| Edge grinding / polishing | Standard |
| Tempering | Critical: Tinted glass absorbs more heat during tempering – requires adjusted cycle parameters |
| Heat soak test (HST) | Strongly recommended for all tinted and hybrid solar control glass |
| Laminating | Solar control coating can be on inner surface of laminated lite |
| IGU assembly | Coating typically on surface #1 or #2 for reflective; surface #2 for spectral |
7.3 IGU Assembly for Solar Control Skylight Units
| Component | Specification | Notes |
|---|
| Outer lite | Solar control coated or tinted glass | Faces exterior, rejects solar heat |
| Inner lite | Clear or Low‑E tempered / laminated | Safety glass, may add thermal performance |
| Spacer | Warm edge (stainless steel or TPS) | Reduces edge condensation |
| Gas fill | Argon (standard) | Improves U‑value |
| Coating position | Surface #1 or #2 for reflective; Surface #2 for spectral | Maximizes solar rejection |
8. Applicable Glass Products
Each solar control skylight configuration links directly to our product pages for detailed specifications.
| Skylight Configuration | Recommended Product | Link |
|---|
| Reflective coated skylight | Reflective Glass | View Product → |
| Spectrally selective skylight | Low‑E Glass (Solar Control grade) | View Product → |
| Body‑tinted skylight | Tinted Glass | View Product → |
| Tinted + coated hybrid skylight | Reflective Glass (tinted substrate) | View Product → |
| Solar control laminated skylight | Laminated Glass (solar control) | View Product → |
| Solar control IGU | Insulated Glass (solar control) | View Product → |
| Jumbo solar control skylight | Jumbo Glass | View Product → |
9. Standards & Certifications
| Standard | Scope | Applicable To |
|---|
| NFRC 200 | SHGC determination | All solar control products |
| NFRC 300 | VLT determination | All solar control products |
| ASTM E2190 | IGU durability and seal performance | IGU assembly |
| EN 51096 | Coated glass – classification | Solar control coating classification |
| ISO 59050 | Optical and solar properties | VLT, SHGC, g‑value |
| ASTM C1048 | Heat‑treated flat glass | Tempered solar control glass |
| CE | European conformity marking | EU market |
| CCC | China compulsory certification | China market |
Project References
| Project Type | Solar Control Configuration | Size | Measured Performance |
|---|
| Hotel Atrium (Dubai) | 6mm Reflective Silver + 16Ar + 6mm Clear | 2820×7850 mm | SHGC=0.18, VLT=12% |
| Shopping Mall (Singapore) | 6mm Spectral Selective + 16Ar + 6mm Low‑E | 3020×6400 mm | SHGC=0.28, VLT=44% |
| Office Building (Miami) | 6mm Reflective Blue + 16Ar + 6mm Clear | 2680×5200 mm | SHGC=0.22, VLT=18% |
| Airport Terminal (Qatar) | 8mm Dark Blue Hybrid + 20Ar + 8mm Laminated | 3320×10500 mm | SHGC=0.15, VLT=10% |
| Residential Villa (India) | 6mm Bronze + 16Ar + 6mm Clear | 2480×4250 mm | SHGC=0.45, VLT=35% |
| Convention Centre (Thailand) | 6mm Spectral Selective + 16Ar + 6mm Laminated | 3140×7800 mm | SHGC=0.30, VLT=42% |
10. Request Solar Control Skylight Glass Quote
Submit your project requirements for a competitive FOB quotation and engineering assessment.
Required Information:
- Climate zone: Hot / Very hot / Extreme hot
- Solar control technology: Reflective / Spectrally selective / Body‑tinted / Hybrid / Laminated
- Target SHGC (if known)
- Target VLT (if known)
- Exterior colour preference: Silver / Bronze / Grey / Blue / Green / Dark Blue / Neutral
- IGU type: Double glazed / Triple glazed
- Glass thickness (outer + inner)
- Cavity width (mm)
- Gas fill: Air / Argon / Krypton
- Spacer type: Aluminum / Stainless Steel / TPS (warm edge)
- Dimensions (width × height × quantity per IGU)
- Load requirements: Snow load / Maintenance load / Wind load
- Edge finish: Flat ground / Polished
- Processing: Holes, notches, cut‑outs (provide drawing)
- Application: Residential / Commercial / Hotel / Airport / Public
- Project location
- Certifications required
- Target delivery date
- 📧 Email your specification to: tomron1688@gmail.com
- 🌐 Or upload drawings at: www.jumbotemperedglass.com
- Response time: Preliminary feasibility within 24 hours; detailed quotation with NFRC‑equivalent performance data within 48 hours.
11. Frequently Asked Questions
Q1: What is the difference between solar control glass and Low‑E glass?
Low‑E glass primarily controls re‑radiation of heat from inside the building (managing U‑value). Solar control glass primarily blocks solar radiation before it enters (managing SHGC). Many modern products combine both functions.
Q2: Which solar control glass gives the best daylight?
Spectrally selective coatings offer the highest VLT relative to their SHGC – they can achieve VLT of 45–50% with SHGC of 0.28–0.35, giving the best LSG ratio.
Q3: Does solar control glass reduce natural light significantly?
Reflective coatings reduce VLT to 8–20%, which is noticeable. Spectrally selective coatings maintain 35–50% VLT, which is acceptable for most applications. Body‑tinted glass ranges from 20–50% VLT.
Q4: What colour options are available for solar control skylight glass?
Silver, bronze, grey, blue, green, dark blue, and neutral (spectrally selective). Each offers different performance characteristics.
Q5: Is solar control glass suitable for cold climates?
Generally no – solar control glass is designed to reject solar heat. In cold climates, you want to capture solar gain, making Low‑E glass a better choice.
Q6: What is the lowest SHGC achievable with solar control skylight glass?
The lowest practical SHGC is approximately 0.12–0.15, achieved with dark blue hybrid (tinted + coated) glass. This comes with very low VLT (8–12%).
Q7: Does solar control glass need to be tempered?
Yes – all solar control glass used in skylights should be fully tempered. Tinted glass in particular requires careful tempering due to higher solar absorption.
Q8: What is the lead time for solar control skylight glass?
Standard colours and coatings: 5–7 weeks. Custom colours or hybrid products: 7–9 weeks. Jumbo sizes: +1–2 weeks.
12. Related Pages (Internal Link Cluster)
Within Skylight & Roof Glass Section
PProduct Pages (Cross‑Links)
Other Applications
