CATAS WKI PREMIUM Certifies the quality of the coating cycle of products for exteriors.

To obtain this warranty the product must pass specific outdoor tests designed to ensure the protection of  wood and quality control of the production batches, according to Certificate CATAS QUALITY AWARD COATING SYSTEM FOR EXTERIOR WOOD. The definition PREMIUM indicates the addition the regulation EN 927-2, which gives precise instructions on performing tests of resistance to natural exposure. All the trials included in this certification are to verify the following performances:

• artificial aging using certified equipment (EN 927-6)
• Water permeability. (EN 927-5)
• Non-volatile substances within the limits defined: the solid content must conform to the technical and safety sheets (UNI EN ISO 3251)
• Actual presence in the coatings of the substances declared using Gas chromatographic analysis (PTP CATAS)
• Effectiveness of biocidal products evaluated by inhibition test on agar. The test consists in exposing the coating to fungi cultures for an endurance test (PTP CATAS)
• Resistance to liquids at low temperature (UNI EN 12720)
• Test of wet adhesion (EN 927-8)
• Suitability for stacking through pressure test (PTP 140)