“Standard UNE-EN ISO 4624 helps to guarantee the adhesion of paints and coatings”
TECNALIA guarantees the adhesion of paints and coatings as per standard UNE-EN ISO 4624 through its accredited laboratory
Paint manufacturers need to prove the reliability of their coatings in a market where durability and regulatory compliance are critical. TECNALIA, as an accredited laboratory and benchmark for adhesion testing, offers technical rigour, independence and internationally recognised results, offering industry an objective validation of its painting systems.
TECNALIA ensures structure protection
Standard UNE-EN ISO 4624 can be applied to a wide variety of substrates such as steel, aluminium and concrete and determines the tensile strength in megapascals and the nature of the failure: cohesive failure of the substrate, adhesive failure between the substrate and the layers or cohesive failure of the adhesive, among others.
Its application is especially important in sectors such as construction, industry, infrastructure, energy, oil & gas, shipbuilding, automotive, aeronautics or railways, as it ensures protection against corrosion of steel structures (UNE-EN ISO 12944-6), where adhesion is critical to ensure durability and reliability .
Poor adhesion can lead to peeling, loss of protection, reduced service life and increased maintenance costs, as well as limiting access to projects requiring accredited testing.
TECNALIA uses various methods to assess the adhesion of paints and coatings
Standard UNE-EN ISO 4624 describes methods to assess the adhesion of a single film or a multilayer system of paint, varnish or coating by measuring the minimum tensile stress (pull-off) required to detach or break the coating in a direction perpendicular to the substrate to which it is applied.
In short, tests as per standard UNE-EN ISO 4624-6:2018 can:
- Validate the adhesion and the nature of the failure of the paint system on different substrates
- Compare multilayer formulations and systems
- Comply with technical and regulatory requirements
- Reduce risks before going on the market
TECNALIA is an accredited laboratory and a benchmark for adhesion testing
TECNALIA combines accreditation, advanced equipment and an expert coatings team, offering reliable results and decision-oriented technical interpretation. Its support for R&D activities helps to optimise formulations and solve adhesion problems, reinforcing the technical and commercial credibility of manufacturers.
Contact TECNALIA’s experts
If you manufacture paints and coatings, please contact TECNALIA’s expert paints, coatings and waterproofing team, and discover how we can guarantee their adhesion.