When selecting the right warm edge spacer for insulating glass units, performance over the window’s lifetime is everything. The Super Spacer® T-Spacer™ SG from Edgetech is a premium flexible spacer engineered specifically for structural glazing applications — delivering exceptional thermal efficiency, proven durability, and long-term reliability that IGU manufacturers and fabricators can depend on. Whether supplying residential developments, commercial projects, or high-specification architectural glazing, this product is built to meet the most demanding performance standards.

What Is the Super Spacer® T-Spacer™ SG?

The Super Spacer® T-Spacer™ SG is part of Edgetech’s industry-leading SuperSpacer range — warm edge spacer bars built on flexible foam polymer technology rather than traditional rigid aluminium. The SG designation confirms it has been specifically formulated and tested for structural glazing applications, where the spacer must maintain integrity under demanding environmental and mechanical conditions.
The T-Spacer™ SG features an integrated desiccant system within the foam body, actively absorbing moisture inside the sealed unit cavity to maintain clarity and performance throughout the IGU’s lifetime. A high-performance adhesive bonding system bonds directly to glass, creating an immediate, strong seal that supports structural glazing requirements while simplifying the manufacturing process.

The Benefits of a Warm Edge Spacer for IGU Performance

Traditional aluminium spacer bars create a thermal cold bridge at the perimeter of the glazed unit — reducing U-values, increasing condensation risk, and undermining overall window efficiency. The Super Spacer® T-Spacer™ SG eliminates this entirely. With no metal content, there is no thermal bridge at the edge of glass, directly improving the linear thermal transmittance (Psi value) of the window unit.

Key performance benefits include:

Improved Psi values — reducing linear heat loss at the window perimeter
Higher edge-of-glass temperatures — significantly lowering condensation risk on interior surfaces
Improved whole-window U-values — contributing to better Window Energy Ratings (WER)
Enhanced occupant comfort — eliminating cold spots near window edges

For fabricators, these gains translate into a stronger, more competitive product proposition in an energy-conscious marketplace.

Why Choose a Flexible Spacer Over Rigid Aluminium?

The flexible foam construction of the SuperSpacer system allows it to absorb and accommodate thermal expansion and contraction as temperatures fluctuate. Rigid metal spacers are susceptible to stress at sealant interfaces during these thermal cycles, leading to seal failure over time. The T-Spacer™ SG moves with the unit — maintaining a durable, airtight seal across the full service life of the window.

This flexibility, combined with the absence of metal conductivity, makes the T-Spacer™ SG one of the most structurally resilient and thermally efficient flexible spacer solutions available to IGU manufacturers today.

Durability That Lasts the Lifetime of the Window

The longevity of the Super Spacer® T-Spacer™ SG is backed by rigorous independent testing, including compliance with EN 1279 — the European standard for insulating glass units. The product is formulated to maintain seal integrity, desiccant effectiveness, and structural performance across a window’s expected lifetime of 25 years or more.

The integrated desiccant continuously manages moisture within the unit cavity, preventing fogging, preserving optical clarity, and protecting the inert gas fill — typically argon or krypton — that contributes to thermal performance. The result: fewer warranty claims, greater customer satisfaction, and a stronger reputation for fabricators who specify SuperSpacer.

Efficiency Gains for Buildings and Fabricators

Efficiency with the T-Spacer™ SG works on two levels. For the building, improved Psi values and warmer edge-of-glass temperatures contribute to a stronger thermal envelope — lowering heating costs, improving occupant comfort, and supporting compliance with energy performance requirements including SAP calculations and BREEAM ratings.

For the fabricator, the SuperSpacer system integrates efficiently into modern IGU production lines. Its flexible format is straightforward to handle, cut, and apply — reducing complexity compared to corner-key aluminium systems — while consistent adhesive bonding supports quality control and production throughput.

Applications of Super Spacer® T-Spacer™ SG

Purpose-built for structural glazing, the T-Spacer™ SG is the preferred choice for:

Curtain wall glazing systems
High-specification commercial facades
Architectural glazing projects
Double and triple glazing units across a range of cavity widths

The SG variant meets bonding strength and structural requirements that standard spacer bars cannot achieve — giving architects, specifiers, and contractors full confidence in long-term performance.

Specify Super Spacer® T-Spacer™ SG with Confidence

The Super Spacer® T-Spacer™ SG brings together warm edge spacer technology, flexible foam innovation, and structural glazing capability in one complete solution. For IGU manufacturers ready to improve energy ratings, reduce warranty risk, and deliver lasting value, it is a definitive choice.

Contact the Edgetech team today to request a sample or speak with a technical specialist about integrating T-Spacer™ SG into your production.

For more information please call + 44 (0) 2476 639931 or visit www.edgetechig.co.uk

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