Structural Glazing Silicone Sealant
Structural Glazing Silicone Sealant
High-Performance Structural Bonding System for Curtain Wall Engineering
Structural Glazing Silicone Sealant is a neutral curing, high-modulus silicone adhesive engineered for structural glazing systems (SSG) used in curtain wall façades, high-rise buildings, and architectural glass envelope systems.
It is designed to replace mechanical fixing in approved structural applications, providing long-term load-bearing stability, weather resistance, and dynamic movement absorption under extreme environmental and structural stress.
Engineering Application Background
Modern façade systems are no longer static structures. They are constantly exposed to:
- Wind load pressure (high-rise buildings)
- Thermal expansion and contraction cycles
- Seismic movement
- UV radiation and urban pollution
This structural silicone sealant is designed specifically to maintain bond integrity under continuous dynamic stress, making it suitable for advanced façade engineering systems.
Structural System Compatibility
This product is fully compatible with modern façade systems:
- Structural Silicone Glazing (SSG) 2-side system
- Structural Silicone Glazing (SSG) 4-side system
- Unitized curtain wall systems
- Stick curtain wall systems
- Point-supported glass façade systems
- Aluminum framing structural bonding systems
Technical Data Sheet
|
Property |
Value |
|
Type |
Neutral cure structural silicone |
|
Density |
1.30 ± 0.05 g/ml |
|
Skin time |
20–60 min |
|
Full cure rate |
2–3 mm / 24h |
|
Shore A hardness |
35–45 |
|
Tensile strength |
≥ 1.0 MPa |
|
Elongation |
≥ 300% |
|
Movement capability |
±25% |
|
Temperature resistance |
-50°C to +150°C |
|
Application temperature |
+5°C to +40°C |
Key Engineering Performance Advantages
Long-Term Structural Durability
Formulated for long-term façade service life, resisting:
- UV degradation
- Ozone exposure
- Industrial pollution
- Coastal salt corrosion
High Movement Accommodation (±25%)
Designed to absorb structural deformation caused by:
- Thermal expansion of aluminum frames
- Wind sway in high-rise buildings
- Earthquake-induced movement
Neutral Cure & Material Safety
Non-corrosive curing system compatible with:
- Low-E coated glass
- Reflective glass
- Anodized aluminum
- Galvanized steel
Primerless Adhesion Capability
Strong adhesion to common construction substrates, reducing:
- Surface preparation cost
- Installation time
- Chemical dependency on-site
Real Project Application Cases
This product has been widely applied in international façade engineering projects, including:
- High-rise commercial towers in the Middle East (UAE / Saudi Arabia region)
- Curtain wall systems for Southeast Asia commercial complexes
- Glass façade systems for transportation hubs and airports
- Large-scale urban commercial developments in coastal environments
Engineering Performance Validation
To ensure structural safety and consistency, the product is validated through:
Mechanical Testing
Tensile strength verification (ISO/ASTM methods)
Shore A hardness testing
Elongation and movement recovery tests
Durability Simulation
UV aging resistance testing (accelerated exposure simulation)
Thermal cycling (-50°C to +150°C)
Moisture and weathering resistance tests
Quality Traceability
Batch retention samples
Production lot traceability system
Consistent QC inspection before shipment
Installation & Structural Design Guidelines
Surface Preparation
- Surfaces must be clean, dry, and free from dust, oil, and oxidation
- Recommended solvent cleaning prior to application
Joint Design Requirements
- Follow structural glazing design principles (ASTM C1184 guidelines)
- Proper width-to-depth ratio must be maintained
- Avoid over-constraint of movement joints
Curing Conditions
- Avoid water exposure before surface skin formation
- Ensure proper ventilation during curing phase
Failure Prevention Guidelines
To avoid structural glazing failure risks:
- Do not apply without adhesion compatibility testing
- Avoid application on unknown coated substrates
- Prevent air entrapment during sealing
- Ensure correct joint movement design
- Do not apply under extreme humidity or freezing conditions
Product Comparison
Structural Silicone vs PU Sealant
|
Feature |
Silicone Sealant |
PU Sealant |
|
UV resistance |
Excellent |
Limited |
|
Weather durability |
Long-term |
Medium |
|
Structural glazing use |
Yes |
Limited |
|
Elasticity |
High |
Medium |
|
Aging resistance |
Very strong |
Moderate |
Comparison with Standard Construction Sealants
Structural glazing silicone provides:
- Higher movement capability
- Better long-term adhesion stability
- Superior weather resistance
- Longer service life
Global Standards & Certifications
ASTM C1184 – Structural Silicone Sealant Standard
EN 15651 – European Construction Sealant Standard
ISO 9001:2015 Quality Management System
CE Compliance for EU construction applications
RoHS compliant low VOC formulation
Packaging & Logistics
- 300ml Cartridge: 24 pcs/ctn | 1,200 cartons / 20ft FCL
- 590ml / 600ml Sausage: 20 pcs/ctn | 1,500 cartons / 20ft FCL
- 200L Drum: Industrial automated production line supply
Storage & Shelf Life
Store in sealed original containers below 27°C in a dry environment away from sunlight.
- Shelf life: 12 months
- Guaranteed fresh production: 10–11 months remaining upon shipment arrival
FAQ
Q: Can it be used in extreme climates?
A: Yes, it performs reliably from -50°C to +150°C, suitable for desert, coastal, and cold-region projects.
Q: Is primer required?
A: Not for most substrates. Adhesion testing is recommended for coated or special surfaces.
Q: How do you ensure quality consistency?
A: Each batch undergoes mechanical testing, adhesion verification, and durability simulation with full traceability.
Q: Do you provide technical support for façade projects?
A: Yes. We support joint design guidance, compatibility testing, and material selection consultation.
Q: Why is structural silicone preferred over mechanical fixation?
A: It allows uniform stress distribution, better movement absorption, and improved façade aesthetics without visible fixing systems.
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