Curtain Walling

CN Glass Introduces Two‑Part Structural Silicone Sealant for Enhanced Performance

ByBecky Butler

Quick Summary

Two-part structural silicone sealants combine a silicone polymer base with a curing agent to create strong durable bonds between glass and structural frames. Applying two-component sealant systems during assembly accelerates curing times from two days to twelve hours, significantly reducing project downtime. This advanced bonding technology delivers superior resistance to extreme weather and ultraviolet radiation. Removing bulky mechanical retainers enables structural glazing to achieve seamless frameless aesthetics. Specifying two-part structural silicone sealants from CN Glass ensures mechanical stability and high performance for commercial curtain walling.

Structural glazing sealants are a vital component in today’s modern building systems. They allow glass to be securely bonded to other materials—whether glass‑to‑glass or glass‑to‑metal—while offering exceptional flexibility, UV resistance, and long‑term durability. These qualities make silicone sealants the preferred choice for load‑bearing applications such as curtain walling and glass façades.

At CN Glass, based in Banbury, Oxfordshire, we’re proud to announce the introduction of a two‑part structural silicone sealant into our in‑house glass processing system. This advanced sealant is applied during the final assembly stage, before each window is fitted into its frame, ensuring maximum precision and performance.

Unlike traditional one‑component sealants, a two‑part system combines two separate elements just before application:

  • A base material containing silicone polymers and specialised additives
  • A curing agent that reacts with the base to create a strong, reliable structural bond

This upgrade will now replace our standard sealant across all relevant projects—and for good reason.

Why the Change Matters

Our new two‑part structural sealant brings a host of benefits to both the construction industry and our customers:

  • Greater strength and durability, ideal for demanding structural applications
  • Improved resistance to extreme weather and UV exposure, ensuring long‑lasting performance
  • Significantly reduced curing time—from approximately two days to just 12 hours—helping to minimise project downtime and keep schedules on track

A Sleek, Modern Aesthetic

Beyond its technical advantages, the two‑part sealant also supports the clean, contemporary look that architects and developers increasingly seek. By bonding glass panels directly to the structure, it enables a frameless appearance without the need for bulky metal retainers or covers. The result is a seamless finish that enhances both design freedom and visual impact.

For more information on how our sleek new processes can be advantageous to your next project, give our team a call on 01295 263364 or email info@cnglass.co.uk

Similar Posts

  • Precision and Performance with In-House Manufactured Sealed Units

    ByBecky Butler

    In-house manufactured double and triple glazed sealed units improve building performance by providing superior thermal insulation under BS EN 1279 standards. Producing these high specification units locally in Oxfordshire eliminates outsourcing delays, ensures rigorous quality checks, and prevents transit damage. Utilising advanced warm edge spacer bars, insulating argon gas, and low-emissivity coatings significantly lowers U values and prevents internal condensation. This flexible manufacturing process accommodates bespoke specifications, from slimline heritage glazing for historic properties to heavy duty safety glass for commercial facades, securing long term durability and structural integrity.

  • Home Efficiency – Why Windows & Doors Matter

    ByBecky Butler

    Inefficient or poorly fitted windows and doors are responsible for fifteen to thirty per cent of residential heat loss in the United Kingdom. Upgrading to high-performance double or triple glazing reduces this energy loss and lowers household heating bills. High-quality glazing units utilise low U-values and gas fills, such as argon or krypton, to improve thermal retention. Residential windows typically require replacement every fifteen to twenty-five years, while external doors last approximately thirty to thirty-five years. Regular draught-proofing and timely glazing replacements are essential steps for maintaining long-term home energy efficiency.

  • The Role of Warm Edge Spacers in Achieving Low U-Values for Commercial Projects

    ByBecky Butler

    Warm edge spacers are critical for achieving low whole window $U_w$ values in commercial glazing by eliminating the thermal bridging associated with traditional aluminium bars. Manufactured from low-conductivity materials like engineering plastics or silicone foam, these spacers significantly reduce linear heat loss around the glass perimeter. This technical improvement helps developers meet Approved Document L requirements, minimises condensation risks, and improves occupant comfort near large glazed facades. By absorbing structural movement and reducing stress on edge seals, high performance warm edge systems prevent premature unit failure, securing long-term durability for commercial building facades.

  • |

    Commercial Glazing Specification Guide: Choosing the Right Sealed Unit for Your Commercial Project

    ByBecky Butler

    Selecting the correct commercial sealed unit requires evaluating thermal performance, structural safety, acoustic insulation, and regulatory compliance. Double-glazed units incorporating low-emissivity coatings and argon gas fill minimise U-values to lower building operational energy costs. Toughened or laminated safety glass must be specified for high-traffic zones and critical structural openings to meet UK Building Regulations Part K. Acoustic laminated interlayers reduce external noise transmission in commercial properties. In-house manufactured sealed units ensure precise quality control, certified performance standards, and reliable installation schedules for commercial construction developments.

  • |

    Reducing Operational Carbon Through Smarter Glazing Choices

    ByBecky Butler

    Smarter glazing choices reduce operational carbon by lowering thermal transmittance and minimising building energy consumption. Modern double and triple glazed units feature low-emissivity coatings, warm-edge spacer bars, and argon gas fills to retain internal heat. High-performance glass prevents thermal loss in winter while controlling solar heat gain during summer. Decreasing energy demand directly reduces active heating and cooling usage, lowering operational carbon emissions across commercial and residential properties. CN Glass manufactures bespoke low-U-value sealed units engineered to achieve long-term carbon reduction and regulatory energy compliance.

  • CN Glass Winter Home Check-List

    ByBecky Butler

    A winter home checklist for windows and doors focuses on identifying draughts, degraded seals, internal condensation, and mechanical hardware faults. Checking window and door perimeters by hand reveals unwanted cold air infiltration. Inspecting rubber seals ensures weatherstripping remains free of cracks and physical gaps. Moisture or misting between double-glazed glass panes indicates a failed sealed unit requiring replacement. Testing locks and hinges confirms doors and windows close fully to prevent thermal loss. Replacing damaged units through CN Glass restores building thermal performance and lowers winter heating expenditure.