Waterproofing, and thermal and air-proof sealing

The Hélios Group is made up of the companies GEC Ile-de-France (Générale d’Etanchéité et de Couverture) and Sallandre. GEC Ile-de-France, created in 1992, is a regional specialist in the waterproofing of roof terraces, and the thermal and air-proof sealing of buildings. GEC focuses on maintenance and renovation through multi-year contracts. The clientele of GEC Ile-de-France has historically consisted of administrators of private and public real estate stocks, and local communities and para-public buildings. Sallandre, created in 1875, works via plumbing and roofing installation maintenance contracts with a clientele mainly made up of large private sector commercial buildings.

Date of capital investment

December 2013

Type of deal




Number of employees


Date of transfer

January 2019

Type of transfer

Secondary LBO to Azulis Capital
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