Siltech 70
Structural Glazing Silicone Sealant
Durable. Flexible. Built for Demanding Construction Environments.
A Specialized Solution for Structural Glazing Applications
Siltech 70 is a one-part, neutral cure silicone sealant for curtain walls, façades, and structural glazing systems. Whether applied in factory-controlled environments or on-site conditions, it is suited for professional use in curtain wall assemblies, glass façades, and aluminium-to-glass joints.
Its formulation is engineered to withstand weather extremes, UV exposure, and mechanical stresses, making it a strong choice for glazing contractors and facade specialists operating across diverse climates and project conditions
Product Overview
Properties
-
Neutral Curing: Compatible with most construction substrates, including aluminium and glass.
-
UV and Weather Resistance: Designed to handle long-term exposure to sunlight, rain, ozone, and fluctuating temperatures — making it an ideal weatherproof silicone for commercial glazing.
-
Mechanical Stability: Exhibits tensile and compressive resilience appropriate for bonded glazing systems.
-
Non-Corrosive: Will not corrode metal or other corrosion-sensitive building materials.
Note: Product suitability should always be confirmed with on-site adhesion and compatibility testing, particularly on unusual or complex substrates. Always follow best practice guidelines and refer to product documentation.
Where to Use Siltech 70
Recommended for:
-
Structural glazing (glass-to-frame bonding)
-
Glass façades and cladding systems
-
Curtain wall assemblies
-
Aluminium, ceramic, steel, tile, concrete, and precast substrates
-
Façade installations requiring black silicone sealant
-
Glass and aluminium frame connections in structural glazing
-
General sealing and bonding
Engineered for Precision Application
Siltech 70 is designed to make every installation smooth, controlled, and professional—whether you're working on-site or in a factory setting.
-
Effortless Handling: Apply cleanly on vertical joints and complex geometries without slumping. The non-sag formula ensures a controlled bead that holds its shape.
-
Sharp Finishes: Use masking tape for crisp edges, then tool immediately after application for a seamless result.
-
Surface Prep: For best adhesion, clean bonding areas using MEK or acetone. Avoid soap or detergents that leave residues.
Choose the Format That Fits Your Workflow
-
300ml cartridge – perfect for precision work and smaller glazing jobs
-
600ml sausage – ideal for continuous application in large-scale façade or panel systems
-
Colour: Available in black, preferred for exposed installations and architectural glazing
Enhance Your Finish with Siltech Tooling Liquid
For best results and a clean, professional finish, pair Siltech 70 with Siltech Tooling Liquid. This specialized smoothing aid is designed for use with silicone, polyurethane, acrylic, and MS polymer sealants. It allows for easier shaping and finishing of joints—reducing drag, preventing surface tearing, and helping maintain a sharp, uniform bead.
Plan with Confidence Using the Sealant Estimator
Wondering how much Siltech 70 you'll need?
Use our Sealant Estimator to calculate the approximate quantity based on your joint dimensions and project size. It’s a quick, easy way to plan ahead, reduce waste, and ensure your order is spot-on.
Developed for the Glazing Trade. Backed by Experience.
Whether you're working on storefronts, façades, or custom glazing projects, Siltech 70 is a professional glazing silicone designed for structural sealant applications in aluminium curtain wall systems. Built to meet the demands of modern construction, it delivers consistent results across diverse applications and environmental conditions.
