A Guide to Structural Silicone Glazing and Glazing Silicone Sealants: What You Need to Know

In modern construction and façade design, structural silicone glazing has become an essential solution for creating sleek, high-performance buildings. Whether you’re working on commercial curtain walling or high-end residential installations, understanding the role of silicone-based products is crucial.

At Sealant Supplies, we stock a wide range of trusted glazing sealants from industry-leading brands, all available with trade discounts and bulk-buy options. If you’re navigating the choices in glazing silicone sealant for the first time or looking to switch to a more reliable product, this guide offers insight into the types of sealants available and their ideal uses.

What is Structural Silicone Glazing?

Structural silicone glazing (SSG) refers to a system where silicone sealants are used to bond glass to a building’s structural framing. This method eliminates the need for mechanical fasteners, allowing for seamless glass façades that are not only visually appealing but also weather-resistant and durable.

Unlike standard sealants, structural silicones are specially formulated to handle significant movement, UV exposure, and environmental stress. All while maintaining a strong adhesive bond. This is especially important in high-rise projects and buildings exposed to fluctuating temperatures or strong winds.

Choosing the Right Glazing Silicone Sealant

When it comes to choosing a glazing silicone sealant, the options can be overwhelming. It’s vital to choose a sealant that matches your application needs, whether that be for structural support, external sealing, or versatile bonding in damp environments.

Here are a few products available from our store:

Everbuild 825 – Premium Glazing Sealant

Everbuild 825 is a low modulus, neutral cure silicone designed specifically for perimeter pointing of frames and glazing. Its excellent movement capability and long-lasting flexibility make it a favourite for both residential and commercial work. It’s non-corrosive and offers excellent adhesion without primer, it’s especially suited for sealing between glass and metal.

This sealant is ideal for projects that demand a neat finish without sacrificing weather resistance or performance over time.

CT1 Sealant and Adhesive – Multi-Purpose Performer

Although not exclusively a glazing sealant, CT1 is one of the most versatile products on the market. It can bond to almost any material including glass, metal, wood, and stone. Even in wet or submerged conditions. This makes it an excellent option for those more complex or urgent jobs where you need a fast and reliable seal without compromise.

For installers or contractors looking to carry fewer products without losing performance across applications, CT1 is a solid investment.

Arbo Arbosil LM – External Silicone for Façades

Designed for external sealing, Arbosil LM is a low modulus silicone sealant that’s highly flexible and weather-resistant. It’s commonly used in curtain walling and glazing applications where movement accommodation is crucial. Its ability to maintain elasticity in all weather conditions makes it particularly suitable for external joints in structural silicone glazing systems.

This sealant delivers consistent results in both new builds and refurbishments, especially where long-term performance is essential.

Why Quality Sealants Matter

With structural silicone glazing, there’s little room for error. Choosing a lower-quality or incompatible product could lead to seal failure, leaks, or structural compromise. High-quality glazing silicone sealants not only improve the lifespan of installations but also save time and costs in the long run by reducing maintenance needs.

Working with trusted brands ensures peace of mind, and when you purchase from Sealant Supplies, you’re backed by expert advice, competitive pricing, and fast delivery tailored for trade professionals.

Trusted Sealants for Every Project

Whether you’re tackling a bespoke glass extension or a multi-storey façade, having the right sealants at hand is crucial. Structural silicone glazing relies heavily on the quality of the products used and the right glazing silicone sealant can make all the difference between a job well done and a costly call-back. Browse our full range of sealants today and take advantage of our trade-friendly pricing and bulk order deals. We’re here to help you build with confidence.