This part of EN 927 addresses performance criteria for coating systems on exterior wood. Performance requirements are specified according to three categories of end use (defined in EN 927-1) in terms of two mandatory tests namely natural weathering performance testing carried out in accordance with EN 927-3, and water permeability in accordance with EN 927-5. Additional optional tests (non-mandatory) are tabled which may be used by suppliers, or for specification purposes, to provide additional information, to a standardized format, on aspects of performance relevant to specific situations. The majority of test methods are drawn from EN 927 (all parts), but where relevant additional tests from other national and international sources are used. Requirements for claiming conformity with EN 927-2 are defined and provide flexibility for different situations and can also provide a basis for certification.
EN 927-2:2014 Referenced Document
EN 16492:2014 Paints and varnishes - Evaluation of the surface disfigurement caused by fungi and algae on coatings
EN 927-1:2013 Paints and varnishes - Coating materials and coating systems for exterior wood - Part 1: Classification and selection
EN 927-3:2012 Paints and varnishes - Coating materials and coating systems for exterior wood - Part 3: Natural weathering test
EN 927-5:2006 Paints and varnishes - Coating materials and coating systems for exterior wood - Part 5: Assessment of the liquid water permeability*， 2024-04-20 Update
EN 927-6:2006 Paints and varnishes - Coating materials and coating systems for exterior wood - Part 6: Exposure of wood coatings to artificial weathering using fluorescent UV lamps and water
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 7783:2011 Paints and varnishes - Determination of water-vapour transmission properties - Cup method (ISO 7783:2011)*， 2024-04-20 Update
EN 927-2:2014 history
2022EN 927-2:2022 Fasteners - Heat treated tapping screws - Mechanical and physical properties (ISO 2702:2022)
2014EN 927-2:2014 Paints and varnishes - Coating materials and coating systems for exterior wood - Part 2: Performance specification
2006EN 927-2:2006 Paints and varnishes - Coating materials and coating systems for exterior wood - Part 2: Performance specification [Superseded: CEN ENV 927-2]