Norm

NEN-EN-ISO 4628-7:2016 en

Verven en vernissen - Evaluatie van de degradatie van verflagen - Aanduiding van de intensiteit, hoeveelheid en omvang van algemeen voorkomende gebreken - Deel 7: Beoordeling van de mate van krijtlaagvorming door viltmethode

34,42

Over deze norm

Status Definitief
Aantal pagina's 5
Commissie Verfwaren
Gepubliceerd op 01-02-2016
Taal Engels
NEN-EN-ISO 4628-7 specifies a method suitable, in particular, for rating the degree of chalking on white or coloured exterior coatings and coating systems on rough surfaces (i.e. those having a roughness greater than segment 4 of the reference comparator G as described in ISO 8503-1). The test method specified can also be used for the assessment of the degree of chalking of coatings and coating systems on smooth surfaces, but the method specified in ISO 4628-6:2011 is preferable for this purpose. The test method is applicable to coatings and coating systems on mineral substrates, e.g. fibre cement, brick, concrete, and renderings, independent of the structure of the surface. The method can be used quite effectively by experienced operators and is recommended for laboratory use as well as for onsite evaluation.

Details

ICS-code 87.040
Nederlandse titel Verven en vernissen - Evaluatie van de degradatie van verflagen - Aanduiding van de intensiteit, hoeveelheid en omvang van algemeen voorkomende gebreken - Deel 7: Beoordeling van de mate van krijtlaagvorming door viltmethode
Engelse titel Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 7: Assessment of degree of chalking by velvet method
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