Tertiary buildings

Our know How

Sealing

Sealing and environmental protection specialists

GCC has established its position as a specialist in sealing and environmental protection in Civil engineering (membrane or geomembrane).

We act as specialists in France and abroad, for underground works, water retention basins and roofing.

Qualified and certified specialities

GCC holds the highest qualifications and certifications for this activity :

  • ASQUAL certification (welders, technicians and site managers)
  • 3223 qualibat (membrane seals with higher technicality)
  • Member of AFTES (Association Française des Travaux En Souterrains - French Association of Underground Works)
  • SNCF qualification
  • Member of AFAG (Association Française des Applicateurs en Géomembrane - French Association of Geomembrane Applicators)