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Up to 80% of energy loss through a window occurs at its edge

Innovation in Energy Efficient Components for Glazing Units

Reduce Energy Bills with High Performance Glazing Units

Reduce Heat Loss by up to 94% at the Window Edge

Architects, Specifiers and Builders

The edge of a window can be responsible for up to 80% of energy loss through the window…

The purpose of Warm Edge Technology is to reduce the level of energy loss. Spacers such as Thermobar and Thermoflex, and other warm edge products built into the edge of an insulated glass unit use very thermally efficient materials. Windows specified with warm edge spacer can have reduced heat loss of up to 94% at the external edge compared with standard windows. 

Specifying Thermobar or Thermoflex Warm Edge Spacers – the benefits:

1) Thermobar and Thermoflex are Passive House certified and can achieve phA+ 'Very Advanced Component' rating and are highest rated for hygiene requirements.

2) Cost efficiency – low cost method to successfully improve energy performance of windows and buildings.

3) Building Regulations – simple and effective way to meet ever more stringent regulations. 

4) Reduced heat loss – Up to 94% less heat lost through the edge of the window.

5) Reduced condensation – Up to 70% reduction in condensation dramatically reduces the likelihood of potentially harmful mould growth, and helps meet public sector housing standards.

6) Good aesthetics.

7) Double, triple and quadruple glazing – Thermobar and Thermoflex can be incorporated in triple and even quadruple glazing windows units with ease due to the wide range of spacer sizes available.


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Thermoseal Group

Our business is dedicated to the manufacture and supply of highest performance components and machinery used in the manufacture of insulated glass. Our particular focus Is on the development of components designed to help meet the changing requirements for more thermally efficient windows. We are a multiple award-winning organisation with almost 40 years in the industry.

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