NorGeoSpec is a Nordic scheme for certification, specification and inspection of geotextiles used for separation and filtration in roads. Certification and specification is based on a number of characteristic properties determined by standard test methods defined by CEN and ISO. SINTEF Building and Infrastructure is the certifying body for NorGeoSpec.

Test values and tolerance(s) for the following properties are included: Tensile strength, elongation, energy index, static perforation test, dynamic perforation test, characteristic aperture size and permeability .

The system also includes a method for quality assurance and provides guidelines for selecting relevant specification profile. Selection of specification profile is based on ground conditions, granule size of the filling material and a combination of road-building conditions, as well as the road’s quality requirements.