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Service for architects > Assessment >  Print current page E-mail current page as link

During the inspection of powder-coated surfaces on aluminium steel and galvanised steel, the following assessment criteria should be used:

  • the visual checks of the decorative appearance of the surface and the homogeneity of colour and texture are made without auxiliary means
    • Assessment distance = 3m for building components in interior areas
    • Assessment distance = 5m for building components in exterior areas
  • Substrate unevenness due to e.g. ghost lines, weld seams, unevenness caused by half-drawing (dents), drawing lines, impression etc. are admissible or conditionally admissible unless finishing grinding has been agreed.
  • Colour deviations and different degrees of gloss are conditionally admissible for surfaces with higher or conventional requirements, if they are not striking
  • Dimpled skin is conditionally admissible on surfaces with high requirements (if finely textured or also if coarsely textured, if the layer thickness > 120µm according to constructive or order-related requirements) on surfaces with conventional and low requirements.
  • Inclusions, craters and bubbles are conditionally admissible if they do not exceed the numbers defined in the VFF-bulletins St.02 and Al.02.

Also compare the assessment criteria of the Verband der Fenster- und Fassadenhersteller e.v., VFF-bulletin St.02 (April 1997) and VFF-bulletin Al.02 (October 1997).



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ENVIRAL ® Oberflächenveredelung GmbH – D-14823 Niemegk, Altdorfer Weg 6 – Telefon +49 (0)33843 642-0 – Telefax +49 (0)33843 642-24 – 0800 368 47 25