What Is Curtain Wall Silicone Sealing?
Curtain wall silicone sealing is the process of sealing the joints and gaps in a curtain wall system using high-performance silicone sealants. Curtain walls—made of glass, aluminium, or composite panels—are constantly exposed to wind, rain, heat, and structural movement. Silicone sealing acts as the flexible barrier that keeps these systems weather-tight and stable over time.
As buildings expand, contract, and sway, rigid materials crack. Silicone remains elastic, allowing movement without losing adhesion. It is applied at glass-to-frame joints, panel perimeters, mullion intersections, expansion joints, and interfaces with concrete slabs. Depending on the system, silicone may function as weather sealing to block water and air, or as structural silicone that securely bonds glass to frames.
Proper curtain wall silicone sealing prevents water leakage, air infiltration, noise issues, corrosion, and façade deterioration. When applied professionally with correct joint design and surface preparation, it enhances durability, energy efficiency, and the clean, premium appearance of the building façade.
Why Curtain Wall Sealing Is Critical for Your Building
Curtain walls are designed to move. Temperature changes, wind pressure, and structural shifts constantly stress façade joints. Without proper silicone sealing, even premium curtain wall systems begin to fail.
Prevent water leakage behind façade panels
Curtain wall joints are the primary entry points for rainwater. Professional silicone sealing creates a continuous, watertight barrier that blocks moisture from penetrating behind glass and panels, preventing dampness, staining, insulation damage, mold growth, and costly interior repairs over time.
Our extensive curtain wall sealing services
Our curtain wall sealing services are designed to protect modern façades from water leakage, air infiltration, and long-term deterioration. We carefully seal glass-to-glass, glass-to-frame, mullion, transom, slab-edge, and movement joints using high-performance silicone sealants suited for curtain wall systems.
From offices and malls to hotels, hospitals, and IT parks, our approach helps extend curtain wall life, reduce maintenance issues, and keep the building envelope performing exactly as intended.
Flexible sealing for stick curtain walls, preventing leaks and accommodating structural movement.
Silicone Crew's Extensive Stick System Curtain Wall Services
- Glass-to-mullion joints
- Vertical mullion joints
- Horizontal transom joints
- Pressure plate joints
- Spandrel glass perimeter sealing
- Corner mullion joints
- Expansion joints within the frame
- Perimeter interface with RCC structure
- Structural Bond (Glass-to-Frame)
- Window and Door Insert Perimeters
Silicone Crew delivers precision-applied sealing that ensures durability, flexibility, and long-term performance for stick curtain wall systems.
Professional Unitized Curtain Wall Silicone Sealing Services
Silicone Crew's Extensive Unitized Curtain Wall Services
- IGU (Insulated Glass Unit) perimeter weather sealing
- Vertical mullion-to-mullion joints between unit panels
- Horizontal stack joints between upper and lower unitized panels
- Glass-to-aluminium frame joints within each unit
- Corner unit junctions (external and internal corners)
- Floor-to-floor expansion joints behind unitized panels
- Anchor bracket penetration sealing
- Unitized panel interlock joints
- Unit-to-window or vent module junctions
- Façade service penetration sealing
All silicone applications are executed using system-compatible, façade-grade sealants, following approved joint design, surface preparation, and movement tolerance guidelines to ensure long-term performance
Engineered Silicone Application for Minimal-Support Glass Structures
Silicone Crew's Extensive Spider / Point Fixed Services
- Glass panel edge-to-edge joints
- Vertical glass-to-glass joints between panels
- Horizontal glass-to-glass joints
- Canopy / entrance glass junction sealing
- Glass-to-aluminium support frame sealing
- Glass-to-slab / beam interface joints
- Silicone cushioning at spider arm contact points
- Glass-to-fin (glass fin system) joint sealing
- Countersunk bolt / rotule penetration sealing
- Expansion / movement joint sealing between glass bays
Silicone application in spider glazing systems is carried out using façade-grade, high-movement sealants compatible with point-fixed assemblies. All joints around glass edges, rotules, and fittings are sealed to accommodate thermal movement, vibration, and wind load while maintaining watertightness, glass edge protection, and long-term façade integrity.
Precision Silicone Sealing That Holds Your Glass Façade Together
Extensive Structural Curtain Wall System Services
- Around the edges of glass panels where they bond to the frame
- Along all glass-to-frame joints that hold panels securely in place
- At vertical and horizontal façade joints between floors
- Where the curtain wall meets floor slabs and beams
- At the top (parapet) and bottom (base) of the façade
- Around windows, vents, and door frames within the curtain wall
- Around fixing points, brackets, and fasteners
- Along weather-exposed exterior glass joints
- Where fire-stop systems meet the curtain wall
Structural curtain walls rely on silicone not just for sealing, but for strength and safety. At Silicone Crew, we apply façade-grade structural silicone with precision at glass edges, joints, and connection points to ensure long-term bonding, weather protection, and clean aesthetics. Our process accounts for building movement, wind load, and temperature changes—helping your glass façade stay secure, leak-free, and visually flawless for years.
Best Suited For
Ideal for residential, commercial, and public buildings where glass is exposed to weather, movement, and daily use. Perfect for homes, offices, hospitals, hotels, malls, and high-rise façades requiring durable, precise, and long-lasting glazing sealing.
- Hotels, resorts & serviced apartments
- Hospitals & healthcare facilities
- Airports & metro stations
- Premium residential high-rises
- Corporate showrooms & flagship stores
- Commercial office buildings
- Luxury apartments & condominiums
- Educational institutions with modern glass façades
- Government and public infrastructure buildings
Benefits of Choosing Our Glazing Silicone Service
Our glazing silicone application service ensures long-lasting protection, safety, and a flawless finish for all glass installations. We professionally seal glass joints, frames, and interfaces to prevent water leakage, air gaps, dust entry, and structural stress damage.
- Extends curtain wall lifespan
- Protects interior finishes
- Improves energy efficiency
- Protects glass edges
- Prevents staining and dirt buildup
- Restores curtain wall performance
- Seals expansion and movement joints effectively
- Prevents aluminium corrosion
Don’t risk weak silicone sealing — Talk to our team
Frequently Asked Questions
Why does water leak even when the glass looks sealed?
Most leaks originate from failed joints, hidden stack joints, slab-edge interfaces, or degraded sealant behind the glass—not the visible glass surface itself.
Can failed silicone cause moisture or fogging inside glass units?
Yes. Poor sealing allows moisture to reach IGU edges and internal cavities, leading to condensation, fogging, and long-term glass performance issues.
What type of silicone is used for curtain walls?
We use façade-grade weather seal or structural silicone, selected based on joint movement, exposure, and system compatibility—not generic construction sealants.
Is curtain wall sealing safe in occupied buildings?
Yes. Our methods are designed for live buildings, with controlled access, clean application, and minimal disruption to occupants.
Will sealing affect the look of my façade?
No. Clean, straight, color-matched silicone lines improve façade appearance and eliminate patchy, stained joints.
What warranty do you provide?
We provide a workmanship-backed warranty, supported by manufacturer-approved materials and application methods.
How is pricing calculated?
Pricing is typically based on joint type, access method, height, sealant specification, and total running meters—not guesswork.