NEN EN 13629 : 2012

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Specific product requirements
  4.1 Wood species
  4.2 Finishing
  4.3 Appearance
      4.3.1 General rules
      4.3.2 Rules for the most commonly used species
      4.3.3 Free class
      4.3.4 Natural colours
  4.4 Moisture content
  4.5 Geometrical characteristics
      4.5.1 Dimensions
      4.5.2 Permitted deviations
      4.5.3 Machining
      4.5.4 Profile
  4.6 Technical specifications and properties
      4.6.1 Technical characteristics required when in service
      4.6.2 Specific site requirements
      4.6.3 Appearance
      4.6.4 Renovation and repair
5 Marking
Annex A (informative) Botanical and trade names of the most
        commonly used species for wood flooring (hardwood
        and softwood species)
Annex B (normative) Principles for the classification of the
        free class
Bibliography

Defines the characteristics of individual hardwood boards and pre-assembled hardwood boards with grooves and/or tongues for internal use as flooring.