This European Standard specifies a natural weathering test for exterior wood coating systems mainly intended for decoration and protection of planed and sawn wood. The test provides a means of evaluating the performance of a wood coating system during outdoor exposure. It forms the basis for the performance specification in accordance with EN 927-2.
EN 927-3:2012 Referenced Document
EN ISO 11664-4 Colorimetry - Part 4: CIE 1976 L*a*b*Colour space (ISO 11664-4:2008)
EN ISO 1513 Paints and varnishes - Examination and preparation of test samples (ISO 1513:2010)
EN ISO 15528 Paints, varnishes and raw materials for paints and varnishes - Sampling (ISO 15528:2020)*， 2020-09-30 Update
EN ISO 2409 Paints and varnishes - Cross-cut test (ISO 2409:2020)*， 2020-09-23 Update
EN ISO 2431 Paints and varnishes - Determination of flow time by use of flow cups (ISO 2431:2019, Corrected version 2019-09)*， 2019-07-10 Update
EN ISO 2808:2007 Paints and varnishes - Determination of film thickness (ISO 2808:2007)
EN ISO 2810 Paints and varnishes - Natural weathering of coatings - Exposure and assessment (ISO 2810:2020)*， 2020-09-30 Update
EN ISO 2813 Paints and varnishes - Determination of gloss value at 20 degrees@ 60 degrees and 85 degrees*， 2014-10-01 Update
EN ISO 4628-1:2003 Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 1: General introduction and designation system ISO 4628-1:2003
EN ISO 4628-2 Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects@ and of intensity of uniform changes in appearance - Part 2: Assessment of degree of blistering*， 2016-02-01 Update
EN ISO 4628-4 Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 4: Assessment of degree of cracking (ISO 4628-4:2016)*， 2016-02-01 Update
EN ISO 4628-5 Paints and varnishes - Evaluation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 5: Assessment of degree of flaking (ISO 4628-5:2022)*， 2022-11-23 Update
EN ISO 4628-6 Paints and varnishes - Evaluation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 6: Assessment of degree of chalking by tape method (ISO 4628‑6:2023)*， 2023-10-25 Update
ISO 554 Standard atmospheres for conditioning and/or testing; Specifications
EN 927-3:2012 history
2012EN 927-3:2012 Paints and varnishes - Coating materials and coating systems for exterior wood - Part 3: Natural weathering test
2006EN 927-3:2006 Paints and varnishes - Coating materials and coating systems for exterior wood - Part 3: Natural weathering test
2000EN 927-3:2000 Paints and Varnishes - Coating Materials and Coating Systems for Exterior Wood - Part 3: Natural Weathering Test