EN 927-6:2006

Foreword
Introduction
1 Scope
2 Normative references
3 Principle
4 Apparatus
  4.1 Test chamber
  4.2 Lamps
  4.3 Device for wetting the test panels
  4.4 Black panel thermometer
  4.5 Irradiance control
5 Test panels
  5.1 Wood
  5.2 Preparation and selection of wood panels
  5.3 Preparation of coated panels
6 Procedure
  6.1 Examination before exposure
  6.2 Mounting the test panels
  6.3 Exposure
  6.4 Examination of test panels
7 Precision
8 Expression of results and test report
Annex A (normative) - Details of test methods
      A.1 Gloss and change of gloss
      A.2 Colour and colour change
      A.3 Blistering
      A.4 Flaking
      A.5 Cracking
      A.6 Chalking
      A.7 General appearance
      A.8 Adhesion
Annex B (informative) - Explanatory notes
      B.1 Explanation of exposure cycle
      B.2 Reproducibility
      B.3 Correlation to natural weathering
      B.4 Dependency on wood species and substrate
      B.5 Recommendation of periodical performance assessments
Annex C (informative) - Test for heartwood in pine
Annex D (informative) - Water treatment, devices for
        water purification
Annex E (normative) - Test for abnormally porous wood
Annex F (informative) - Alternative procedure for
        preparation and coating of panels
Bibliography

This part of EN 927 specifies a method for determining the resistance of wood coatings to artificial weathering performed in an apparatus equipped with fluorescent UV lamps, condensation and water spray devices.