BIEBER Window Technologies: Low Conductance Spacers | Warm Edge Spacer Windows

BIEBER European Windows is always trying to achieve high energy ratings to add to the quality of their overall product range and to offer consumers greater informed choices about the products they offer.

Window profiles are part of the story but as glass makes up most of the area in a window and the components used in its construction are critical to achieving good levels of insulation.

Instead of just Centre pane U value, BIEBER European Windows is concerned with the heat loss of the whole window.

Therefore a combination of Coated Glass, Low Iron Glass, Warm Edge Technology and Argon gas filling is critical to achieve a good rating.

Warm Edge Spacer

Did you know that almost half of all the US carbon dioxide emissions come from our buildings and homes?

Windows play a huge role in this. According to the Energy Saving Trust, around 20% of the heat lost from an average home occurs through the windows. The heat lost contributes half a tonne of CO2 per home to the atmosphere and increases fuel bills.

Reduce Heat Loss Through Your Bieber European Windows

  • The layers of glazing in an insulating unit must be held apart at the appropriate distance by spacers. Because of its excellent structural properties, Bieber windows started using aluminum spacers in the 1960’s and 1970’s. Unfortunately, aluminum is an excellent conductor of heat and the aluminum spacer used in most standard edge systems represented a significant thermal “short circuit” at the edge of the insulating glass unit (IGU), which reduces the benefits of improved glazings. In addition to the increased heat loss, the colder edge is more prone to condensation.
  • To address this problem, BIEBER European Window has developed a series of innovative edge systems to address these problems, including solutions that depend on material substitutions as well as radically new designs. One approach to reducing heat loss has been to replace the aluminum spacer with a metal that is less conductive, e.g. stainless steel, and change the cross-sectional shape of the spacer. These designs are used in BIEBER European Windows today.
  • Today, BIEBER European Windows replace the metal with a design that uses materials that are better insulating. BIEBER Windows used design incorporates spacer, sealer, and desiccant in a thermoplastic compound that contains a blend of desiccant materials and incorporates a thin, fluted metal shim of aluminum or stainless steel. The foam is backed with a secondary sealant. Both extruded vinyl and fiberglass spacers have also been used in place of metal designs.
  • Bieber Warm Edge is many times less conductive than aluminum and, as most of the heat loss through a window occurs at the edge of the unit, standard metal spacer bars act as a thermal energy drain allowing heat to escape from your home. Bieber Warm Edge Super Spacer blocks the escape route.

Reduce Noise & Condensation

The “Warm-Edge” spacers, features a unique, one-piece, tin-plated. This design creates an effective thermal barrier to help reduce conducted heat loss through the window and makes the spacers stronger and better at retaining insulating Argon gas than many conventional designs.

Bieber Windows, with built-in energy saving, warm edge spacer which delivers energy saving technology. All Bieber Windows with Warm Edge technology reduce heat/cold lost through your windows, helping to keep your home warm/fresh. Less heat/cool lost also means lower fuel/electricity bills and lower carbon emissions.

There are many other benefits of installing windows with Bieber Warm Edge technology. It reduces condensation by up to 70%, virtually eliminating the potential breeding ground for bacteria, mould and dust mites that can be harmful to people with respiratory diseases. Bieber Warm Edge also reduces noise transmission by up to 2dB RW which helps you keep your home an oasis of calm, away from the noise of the outside world.

Here are some frequently asked questions and answers on Warm Edge Technology.

What is the definition of warm edge?

Warm Edge Technology is a generic term for any spacer bar or system that has better thermal performance than highly conductive aluminum spacer bar.

Aren’t all warm edge technology spacer systems the same?

While we use the generic term WET, there are many different types, some with higher performing attributes than others. Different types include stainless steel; plastic spacers with and without metal backing; tin plated U-shaped spacers; flexible spacers from thermoplastic matrix; butyl-matrix spacers and thermoset structural foam spacer systems.

What are the key performance comparisons that sealed unit manufacturers and fabricators need to research before committing to any of the spacer systems?

There are several key performance indicators but we always advise to take into account all of the following:

  • Thermal performance, specifically relating to Window Energy Ratings
  • Extensive supply chain & distribution channels to ensure consistent availability of product
  • Testing and standards compliancy
  • Ease of manufacture
  • Application options
  • Durability and proven performance
  • Comprehensive system e.g. colours, Georgian bars, and simulated divided light system

How large a unit can Super Spacer support?

Units as large as 30 sq. ft. can be made with Warme Edge.

The Benefits of BIEBER “Warm-Edge” Spacer System

The Intercept spacer system features a unique, one-piece metal alloy, U-channel design that creates an effective thermal barrier to help reduce conducted heat loss through the window. Its sealed, one-piece design makes I spacers stronger and better at retaining insulating gas than many conventional designs.

Comfortable Rooms Start With Bieber European Windows

Bieber European Windows are so energy efficient that they keep the edges of the window glass warmer, so your home feels more comfortable in the winter. The temperature difference between the edge of an insulating glass unit with an ordinary spacer, and one with an Bieber Warm Edge spacer system can be dramatic.

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