Stainless Steel Spacer Bars - Warm Edge for Insulating Glass

Andreas Langner, Johnny Holm

Increasing energy costs and international efforts at the reduction of ecologically harmful emissions result in a growing demand for thermally optimized windows. Improvements of insulating glass by using glass with low emissive coatings and gas with a low thermal conductivity are now followed by the establishment of so called "warm edge"-spacer bars, which reduce the heat losses at the insulating glass edge.

Several warm edge-solutions have been developed in the last years. To evaluate a warm edge product performance it is necessary, to judge not only the thermal properties, but the

Mix of 4 requirements:

- Thermal bridge reduction,

- Ease of handling and processing,

- resulting insulating glass quality and

- Economic efficiency.

Thin-walled stainless steel spacer bars CHROMA:TECH (0,18 mm) and CHROMA:TECH V (0,15 mm) are able to meet this mix of requirements best.

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