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All about Insulating Glass Spacers

by KE JIAYI 08 Jun 2023 0 Comments

It's appropriate to discuss insulating glass spacers now when energy efficiency is more crucial than ever. Glass spacers significantly influence an insulating glass unit's thermal performance. Here are the essential details:

The effectiveness and sustainability of spacer technology must be guaranteed. Spacers control the size of the spacing between any number of sheets of glass in an insulating glass unit. The primary function of spacers is to maintain a constant distance between every layer of glass. Spacer technology is one of the most important aspects of assuring glass performance, which controls how much heat and cold can enter through the glass panes.

Why do you need insulating glass spacers?

It lessens the condensation problem in addition to assisting in preventing heat loss through windows and enhancing the unit's energy efficiency. Warm-edge spacer designs come in a wide range today. Each provides varying degrees of structural integrity while reducing the impact of heat loss.

Wide variety of spacer options

As there is a growing demand for environmentally friendly building materials, glass spacers that can increase the energy efficiency of insulating glass are receiving more attention. The insulating glass spacers' materials, colors, and thicknesses can be changed.

All three are necessary for an insulating glass unit and impact performance. For instance, an IG unit's conductivity characteristics are affected by even a little change in the spacer's thickness. The material also affects how much heat and cold can move through the glass, which significantly impacts how energy-efficient the device is.

Spacers are often separated into two categories based on their material: Aluminum or Warm edge spacers.

Aluminum Spacers:

The most popular kind of spacers at first were those made of aluminum. This substance offers a fundamental performance level and has been around for decades.

Aluminum is a strong material for structures but also a great thermal conductor. In other words, aluminum spacers make heat from inside to exit outside simple. The aluminum-induced cold glass edges also cause a temperature difference between the glass's middle and edges. Consequently, condensation is a problem for the insulating glass components.

Warm Edge Spacers:

Demand for more creative solutions has increased due to rising energy needs. To replace conventional aluminum spacers with ones that perform better, heated edge spacers composed of low-conductivity materials were introduced.

The window industry has been drastically altered by warm-edge technology. It not only aids in reducing heat loss through windows and boosts the unit's energy effectiveness but also lessens the condensation problem.

There are several different warm-edge spacer designs available today. While offering varying degrees of structural integrity, each partially removes the effect of heat loss.

Flexible Warm Edge Spacers:

The hot melt butyl kind of spacers without any additives distinguishes from the flexible spacers that have been developed utilizing malleable, flexible silicone- or thermoplastic-based polymers with integrated molecular sieves.

Stainless Steel Warm Edge Spacers:

Materials made of stainless steel and their characteristics resemble those of aluminum spacers. But stainless steel has better condensation resistance and a thermal conductivity of just 10% that of aluminum.

Plastic-Metal Hybrid Warm Edge Spacers:

However, the conductive properties of stainless-steel spacers far outweigh those of other heated-edge spacer choices. Warm edge spacers created from plastic-metal hybrid substances are often composed of low metal shims as well as plastic materials, including polypropylene, polycarbonates, and others.  

Warm edge spacer in Insulated Glass:


Warm edge spacer, a novel product with low heat conductivity, provides the following advantages when used with insulated glass and windows:

Lowers Sealant Stress

The thermoset polymer substance used to make Super Spacer flexes and compresses but always reverts to its initial shape. In durability testing, warm-edge spacer-sealed IG units outlast traditional single-seal units by up to five times.

Increasing Heat Flow Resistance

The all-foam formulation has one of the finest thermal characteristics and prevents heat transmission. The warm edge Spacer has 950 times more heat flow resistance than aluminum. Lower energy expenditures, less condensation/frosting, and fewer opportunities for mold growth result from this.

Boost Sound Absorption

Compared to standard aluminum spacers, the closed-cell polymer foam in the warm edge spacer transmits minimal sound.

Contributes to Glass Surface Temperature

The insulated glass unit's surface temperature will fluctuate less due to the warm edge Spacer's extraordinarily low thermal conductivity.

TPS – an advanced solution for insulating glass spacers

TPS® technology has significantly changed the insulating glass spacers market since its introduction in 1994. TPS® offers many essential benefits and provides high thermal insulation for insulating glass producers.

  • Vapor barrier that is active and efficient
  • High-quality tension and resilience capabilities
  • Maximum protection against moisture on the cable grommet
  • An application that is continuous and uniform in only one step
  • The exact thickness of the insulating glass unit
  • Lower heating costs for the consumer
  • Increased spacer life
  • Faster production cycles because sawing, bending, desiccant filling, and butyl coating are no longer necessary.
  • The cleaner and more effective manufacturing technique

Advantages of the TPS Technology

  • Vapour Barrier That Is Active And Efficient
  • High-Quality Tension And Resilience Capabilities
  • Maximum Protection Against Moisture On The Cable Grommet
  • Application That Is Continuous And Uniform In Only One Step
  • Exact Thickness Of The Insulating Glass Unit
  • Lower Heating Expenses For The Consumer
  • Increased Spacer Life
  • Faster Manufacturing Cycles Because Sawing, Bending, Desiccant Filling, And Butyl Coating Are No Longer Necessary
  • Cleaner And More Effective Manufacturing Techniques

Properties of an Insulating Glass Spacer

One of the most crucial elements in determining whether or not windows are environmentally friendly is the material used to make the glass spacer. Glass spacers are essential to a window's overall function, particularly in terms of thermal conductivity as well as thermal insulation, as they control how much cold and heat can flow through a window.

A good spacer should play four crucial roles:

  • Relieve tension brought on by thermal expansion and compression
  • Block water vapor and moisture that can cause the glass to fog, and make a tight seal to stop the leaking of specialty gas fills.
  • Raise the temperature of the insulated glass's edges to assist decrease condensation and improve the window's overall energy efficiency.
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