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Sopratec III

Energy efficient building airtightness system

February 2019
Gallery Sopratec III 1
Gallery Sopratec III 1


Steel frame low-energy buildings constructive system, where the achieved airtightness quality level is at least equivalent of a concrete building.

Energy losses in building are caused by both insulation and air leakage. In western Europe, the thickness has been more than tripled to increase insulation, but by contrast, the airtightness has been totally ignored and today the energy leaks due to a bad airtightness are 2 times higher than the energy losses through the insulation. A standard steel frame building shows an air permeability 6 m3/m²/h where the Sopratec III system is only 0.18 m3/m²/h. As an example a small commercial building with only 1000 m2 facade & roof surface with an air permeability of 6 m3/m²/h will leak 1,000 x 5 = 6,000 m3/h air. With an external temperature of +5°C and interior temperature of +20°C , the heating energy needed only to warm up the leaked air will be 32,4 kW, against only 1 kW with the Sopratec III.

Label Date February 28, 2019
From France
Maturity stage Medium and large scale commercialization
Looking For Visibility, contact with steel frame specialists in Europe and in the World.

The environmental benefits

  • 100 kWh/m² heating/air-conditionned saving yearly.
  • High permeability to vapour

The Financial benefits

  • Return On Investment of 5 years.
  • Limited additional cost.

Activity Region

  • /
  • Headquarters
  • Activity

Company Profile

Soprema Group

A market leading provider of waterproofing, roofing and insulation systems with a committed focus on sustainable develop

View company profile
Headquarters 67100 Strasbourg, France
Contact the Solution Provider Add to Favorites

The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances. The innovator Soprema Group has asserted ownership of the intellectual property rights for images, videos, and content showcased above, affirming full and unrestricted usage rights, and has provided explicit permission for the Solar Impulse Foundation to publish such information designated as "public" in the application form.