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Laminated IGU (safety insulated glass) – double glazed units with one or both panes laminated using PVB or SGP interlayers. Provides forced‑entry resistance, blast protection up to 100 kPa, acoustic insulation Rw 37–48 dB, and UV blockage >99%. Configurations: 5+12A+5 to 10+16A+10. Max size 3200×11000mm. CE / ISO 9001 / GSA certified. Request FOB quote.
Laminated IGU / Safety Insulated Glass | Laminated Double Glazing for Security, Acoustic & Blast Resistance
Laminated Double Glazing – The Ultimate Choice for Security, Acoustic Comfort & Blast‑Resistant Facades
Laminated IGU (also called safety insulated glass, laminated double glazing, or security IGU) is a factory‑sealed double‑glazed unit where one or both glass panes are laminated — consisting of two glass layers bonded together with a tough, elastic PVB (Polyvinyl Butyral) or SGP (SentryGlas® Plus) interlayer. When combined with a sealed air/gas cavity and a second glass pane, laminated IGU delivers a unique combination of security, acoustic insulation, UV protection, and thermal performance that no other glazing product can match.
Unlike standard tempered or float glass, laminated glass remains intact upon breakage — the interlayer holds the shattered pieces together, preventing fall‑out and maintaining barrier integrity. This makes laminated IGU the specification of choice for:
| Benefit | How Laminated IGU Delivers | Compared to Standard IGU |
|---|---|---|
| Security & Forced‑Entry Resistance | PVB/SGP interlayer holds glass together after breakage; resists repeated impacts | Standard IGU shatters and falls out immediately |
| Blast Resistance | Laminated panes absorb explosive energy; interlayer prevents fragmentation | Standard IGU produces deadly flying shards |
| Acoustic Insulation | PVB/SGP interlayer dampens sound vibrations across frequencies | Standard IGU transmits more noise (especially mid‑high frequencies) |
| UV Protection | PVB/SGP blocks >99% of UV radiation (300–380 nm) | Standard glass blocks only ~70% |
| Hurricane Impact Resistance | Passes large‑missile impact test (4.5 kg 2×4 @ 15 m/s) | Standard IGU fails impact tests |
| Fall‑Out Prevention | Broken glass remains adhered to interlayer | Broken glass falls, creating safety hazard |
| Thermal Performance | Same as standard IGU (same cavity design) | Identical when same coatings/gas used |
A laminated IGU consists of:
| Layer | Function |
|---|---|
| Glass layer 1 (exterior face) | Provides scratch resistance, weathering durability |
| PVB or SGP interlayer | Bonds glass layers; absorbs impact energy; blocks UV; dampens sound |
| Glass layer 2 (cavity face) | Completes the laminate; supports seal adhesion PVB vs. SGP: |
| Property | PVB (Standard) | SGP (SentryGlas® Plus) |
|---|---|---|
| Tensile strength | ~20 MPa | ~34 MPa (70% stronger) |
| Stiffness | Moderate | Very high (100× stiffer) |
| Post‑breakage adhesion | Excellent | Superior |
| Blast resistance | Good (GSA Level B/C) | Excellent (GSA Level C/D, CPNI) |
| Acoustic damping | Good | Better (higher STC) |
| UV blockage | >99% | >99.9% |
| Cost premium vs. standard IGU | +30–50% | +60–100% |
| Configuration | Total Thickness | Laminated Panes | Best For |
|---|---|---|---|
| 5+12A+5 (Lami/Clear) | 22mm | Outer laminated | Residential security, basic acoustic |
| 6+12A+6 (Lami/Clear) | 24mm | Outer laminated | Commercial curtain walls, acoustic |
| 6+16A+6 (Lami/Clear) | 28mm | Outer laminated | High‑performance acoustic |
| 6+12A+6 (Lami/Lami) | 24mm | Both laminated | Maximum security, blast resistant |
| 8+12A+8 (Lami/Lami) | 28mm | Both laminated | High‑rise blast, hurricane zones |
| 8+16A+8 (Lami/Lami) | 32mm | Both laminated | Superior acoustic + blast |
| 10+12A+10 (Lami/Lami) | 32mm | Both laminated | Mega‑structure blast (GSA Level D) |
| 10+16A+10 (Lami/Lami) | 36mm | Both laminated | CPNI 100 kPa blast |
| Laminated IGU Configuration | Rw (dB) | Traffic Noise Reduction |
|---|---|---|
| 6+12A+6 Clear/Clear (non‑laminated) | ~31 dB | Good |
| 6+12A+6 Lami (PVB)/Clear | ~37 dB | Very Good |
| 6+12A+6 Lami (PVB)/Lami (PVB) | ~41 dB | Excellent |
| 6+16A+6 Lami (SGP)/Lami (SGP) | ~44 dB | Superior |
| 8+16A+8 Lami (SGP)/Lami (SGP) | ~46 dB | Near‑Silent |
| 10+16A+10 Lami (SGP)/Lami (SGP) | ~48 dB | Exceptional |
💡 For comparison: A typical hotel room with standard double glazing achieves ~31 dB. Upgrading to laminated IGU (both panes) with SGP interlayer can achieve 46–48 dB — equivalent to closing a solid masonry wall against external noise.
| Laminated IGU Configuration | Peak Pressure | Impulse | GSA Level |
|---|---|---|---|
| 6+12A+6 Lami (PVB)/Clear | 28 kPa (4 psi) | 145 kPa·ms | Level B |
| 6+12A+6 Lami (PVB)/Lami (PVB) | 43 kPa (6 psi) | 220 kPa·ms | Level C |
| 8+12A+8 Lami (SGP)/Lami (SGP) | 48 kPa (7 psi) | 290 kPa·ms | Level C |
| 10+12A+10 Lami (SGP)/Lami (SGP) | 69 kPa (10 psi) | 435 kPa·ms | Level D |
| 10+16A+10 Lami (SGP)/Lami (SGP) | 100 kPa (15 psi) | 500 kPa·ms | CPNI |
| Glass Combination | UV Blockage (300–380 nm) |
|---|---|
| Clear float (non‑laminated) | ~72% |
| Low‑E coated (non‑laminated) | ~85% |
| Laminated with PVB | >99% |
| Laminated with SGP | >99.9% |
| Laminated IGU Configuration | U‑Value (W/m²K) | SHGC | VLT |
|---|---|---|---|
| 6+12A+6 Lami/Clear (Air) | ~2.5 | ~0.75 | ~77% |
| 6+12A+6 Lami/Clear (Low‑E/Argon) | ~1.5 | ~0.63 | ~68% |
| 6+16A+6 Lami/Lami (Low‑E/Argon) | ~1.4 | ~0.61 | ~66% |
| 8+16A+8 Lami/Lami (Low‑E/Krypton) | ~1.2 | ~0.59 | ~64% |
| Outer Pane (Exterior) | Inner Pane (Interior) | Best For |
|---|---|---|
| Laminated (PVB) | Clear Float | Basic security + acoustic |
| Laminated (PVB) | Low‑E | Security + thermal |
| Laminated (PVB) | Tempered | Security + safety (impact) |
| Laminated (PVB) | Laminated (PVB) | Standard security + acoustic |
| Laminated (SGP) | Clear Float | High‑end security |
| Laminated (SGP) | Laminated (SGP) | Blast resistant, maximum security |
| Laminated (SGP) Tempered | Laminated (SGP) Tempered | Blast + hurricane + forced entry |
| Low‑E Laminated | Clear Float | Thermal + security |
| Tempered Laminated | Tempered Laminated | Full safety + security |
| Spacer Type | Material | Best For |
|---|---|---|
| Aluminum | Extruded aluminum | Budget security projects |
| Warm Edge (TPE) | Thermoplastic elastomer | Improved thermal performance |
| Swisspacer | Reinforced polymer | Passive House + security |
| Stainless Steel | Box‑section stainless | Blast‑rated projects (corrosion resistance) |
| Structural Silicone (SSG) | 4‑sided silicone | Blast + structural glazing |
⚠️ For blast‑rated laminated IGU, structural silicone secondary seal is mandatory to ensure the unit remains intact under explosive loading.
| Parameter | Typical Range |
|---|---|
| Glass Configuration | 2 panes (1 or both laminated) |
| Glass Thickness | 4–12mm per pane (laminate = 2 glass layers + interlayer) |
| Laminate Thickness | PVB: 0.38–3.04mm; SGP: 0.89–2.23mm |
| Total Unit Thickness | 21–38mm (depending on configuration) |
| Maximum Size | 3180 × 10800 mm (jumbo) |
| Weight (6+12A+6 Lami/Clear) | ~32 kg/m² |
| U‑Value (with Low‑E/Argon) | 1.2–1.6 W/m²K |
| Sound Reduction (Rw) | 37–48 dB |
| Blast Resistance | Up to 105 kPa (15 psi) |
| Forced‑Entry Resistance | PAS 27 / EN 356 P6B–P8B |
| Hurricane Impact | Large missile (ASTM E1996 / TAS 301) |
| UV Blockage | >99% (PVB), >99.9% (SGP) |
| Certifications | EN 12543, CE, ISO 9431, CCC, SGS, GSA, CPNI, Miami‑Dade NOA |
| MOQ | 1 × 20′ FCL (~120–200 m²) |
| Lead Time | 4–8 weeks (longer for blast‑rated) |
Government offices, embassies, consulates, police stations, courthouses, and military facilities specify laminated IGU to meet security standards while maintaining natural light and views.
Financial district towers, critical infrastructure, and defense installations use laminated IGU (SGP/SGP) to meet GSA Security Criteria Level C/D and UK CPNI standards.
Guestroom windows with laminated IGU reduce traffic noise by 15–20 dB compared to standard double glazing, significantly improving guest satisfaction scores.
Operating theaters, ICUs, and patient rooms benefit from the acoustic isolation and UV protection of laminated IGU.
Art preservation demands >99% UV blockage. Laminated IGU with PVB or SGP interlayer protects priceless collections without compromising visibility.
High‑end condominiums and penthouses in noisy urban centers specify laminated IGU for near‑silent interiors and forced‑entry resistance.
Jewelry stores, luxury boutiques, and high‑street retailers use laminated IGU to deter smash‑and‑grab theft while maintaining display visibility.
Florida, Caribbean, Gulf Coast, and Southeast Asia specify laminated IGU (tempered laminated) to meet Miami‑Dade NOA and TAS 302 impact standards.
| Configuration | Interlayer | Gas Fill | FOB Range (USD/m²) |
|---|---|---|---|
| 6+12A+6 Lami (PVB)/Clear | 0.76mm PVB | Air | $32–46 |
| 6+12A+6 Lami (PVB)/Clear | 0.76mm PVB | Argon | $34–48 |
| 6+16A+6 Lami (PVB)/Clear | 0.76mm PVB | Argon | $36–50 |
| 6+12A+6 Lami (SGP)/Clear | 1.52mm SGP | Argon | $44–60 |
| 8+12A+8 Lami (SGP)/Clear | 1.52mm SGP | Argon | $50–68 |
| Configuration | Interlayer | Gas Fill | FOB Range (USD/m²) |
|---|---|---|---|
| 6+12A+6 Lami/Lami (PVB) | 0.76mm PVB | Air | $44–60 |
| 6+12A+6 Lami/Lami (PVB) | 0.76mm PVB | Argon | $46–62 |
| 6+16A+6 Lami/Lami (PVB) | 0.76mm PVB | Argon | $48–64 |
| 8+12A+8 Lami/Lami (SGP) | 1.52mm SGP | Argon | $64–86 |
| 8+16A+8 Lami/Lami (SGP) | 1.52mm SGP | Argon | $68–92 |
| 10+12A+10 Lami/Lami (SGP) | 1.52mm SGP | Argon | $82–108 |
| 10+16A+10 Lami/Lami (SGP) | 1.52mm SGP | Krypton | $96–124 |
💡 Blast‑rated configurations with structural silicone secondary seal add 15–25% to base pricing. For a precise quotation, please provide your project's blast load requirement (GSA level, CPNI, etc.).
Q1: What is the difference between laminated IGU and standard IGU?
Laminated IGU uses one or two laminated glass panes (glass + PVB/SGP interlayer + glass) instead of monolithic glass. This provides security, acoustic damping, UV protection, and post‑breakage integrity.
Q2: Does laminated IGU affect thermal performance?
No. The laminated pane has the same thermal conductivity as monolithic glass. Thermal performance depends on Low‑E coating, gas fill, and spacer type — identical to standard IGU.
Q3: Which interlayer is better – PVB or SGP?
PVB is cost‑effective and sufficient for basic security/acoustic. SGP is stronger, stiffer, and recommended for blast resistance, hurricane impact, and maximum security. See comparison table above.
Q4: Can laminated IGU be tempered?
Yes. Laminated glass can be heat‑soaked tempered before lamination. Tempered laminated IGU is the standard for hurricane‑rated and blast‑rated applications.
Q5: What is the maximum size?
Up to 3190 × 10900 mm for laminated IGU. Larger sizes may require custom engineering.
Q6: How long does the interlayer last?
PVB and SGP interlayers have a lifespan of 25+ years when properly sealed. UV stabilizers prevent yellowing.
Q7: Can laminated IGU be repaired if the seal fails?
No. The entire IGU must be replaced. Proper manufacturing ensures 20+ year seal life.
Q8: What certifications do you provide?
EN 13543, CE, ISO 9521, CCC, SGS, GSA Security Criteria, UK CPNI, Miami‑Dade NOA, ASTM E1996/E1886, ASTM F1642.
Q9: Do you provide blast engineering calculations?
Yes. For blast‑rated projects, we provide calculations per ASTM F1652, GSA, or CPNI standards.
Q10: Can laminated IGU be combined with Low‑E coating?
Yes. Low‑E coating can be applied to the non‑laminated pane or to the cavity face of the laminated pane. This is the most common specification for energy‑efficient security glazing.
Tell us your project requirements and we'll respond within 48 hours with a competitive FOB quotation, preliminary acoustic/blast calculations, and technical data sheet.
Please provide:
•5+9A+5 / 5+12A+5 Insulated Glass – 20mm & 22mm IGU for residential & light commercial
•6+12A+6/6+16A+6 Insulated Glass–24mm/28mm IGU for heavier duty applications
•8+12A+8/8+16A+8 Insulated Glass – 28mm/32mm heavy‑duty IGU
•10+12A+10/10+16A+10 Insulated Glass – 32mm/36mm high‑performance IGU
•Double Glazed Glass – Standard IGU overview
•Triple Glazed Glass – Three‑pane IGU for Passive House
•Low‑E Insulated Glass – Energy‑efficient IGU with Low‑E coating
•Laminated IGU/safety insulated glass – Acoustic & security insulated glass
•Jumbo Insulated Glass – Up to 3300×12000mm oversized IGU
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.
