SIST EN 13629:2020
(Main)Wood flooring - Solid individual and pre-assembled hardwood boards
Wood flooring - Solid individual and pre-assembled hardwood boards
This document specifies the characteristics of individual hardwood boards and pre-assembled hardwood boards with grooves and/or tongues for internal use as flooring. This document covers hardwood boards with or without surface coating.
This document does not cover solid parquet elements. (See Annex C).
Holzfußböden - Massive Laubholzdielen und zusammengesetzte massive Laubholzdielen-Elemente
Dieses Dokument legt die Merkmale von Laubholzdielen und zusammengesetzten Laubholzdielen Elemen-ten mit Nut und/oder Feder für die Verwendung als Fußbodenbelag in Innenräumen fest. Dieses Dokument gilt für Laubholzdielen mit oder ohne Oberflächen-Behandlung.
Dieses Dokument gilt nicht für Massivholz-Elemente (siehe Anhang C).
Planchers en bois - Lame de plancher massive individuelle ou pré-assemblée en fois feuillus
Le présent document définit les caractéristiques des lames individuelles et pré-assemblées en bois feuillus avec rainures et/ou languettes pour une utilisation en intérieur en tant que plancher. Le présent document couvre les lames en bois feuillus avec ou sans finition de surface.
Le présent document ne couvre pas les éléments de parquet massif (voir l'Annexe C).
Lesene talne obloge - Masivne in sestavljene masivne deske listavcev
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 13629:2020
01-junij-2020
Nadomešča:
SIST EN 13629:2012
Lesene talne obloge - Masivne in sestavljene masivne deske listavcev
Wood flooring - Solid individual and pre-assembled hardwood boards
Holzfußböden - Massive Laubholzdielen und zusammengesetzte massive
Laubholzdielen-Elemente
Planchers en bois - Lame de plancher massive individuelle ou pré-assemblée en fois
feuillus
Ta slovenski standard je istoveten z: EN 13629:2020
ICS:
79.080 Polizdelki iz lesa Semi-manufactures of timber
97.150 Talne obloge Floor coverings
SIST EN 13629:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 13629:2020
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SIST EN 13629:2020
EN 13629
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2020
EUROPÄISCHE NORM
ICS 79.080; 91.060.30 Supersedes EN 13629:2012
English Version
Wood flooring - Solid individual and pre-assembled
hardwood boards
Planchers en bois - Lame de plancher massive Holzfußböden - Massive Laubholzdielen und
individuelle ou pré-assemblée en bois feuillus zusammengesetzte massive Laubholzdielen-Elemente
This European Standard was approved by CEN on 22 December 2019.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13629:2020 E
worldwide for CEN national Members.
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SIST EN 13629:2020
EN 13629:2020 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Specific product requirements . 5
4.1 Wood species . 5
4.2 Finishing . 5
4.3 Appearance . 6
4.3.1 General rules . 6
4.3.2 Classification . 6
4.3.3 Rules for the most commonly used species . 7
4.3.4 Free class . 10
4.3.5 Natural colours . 10
4.4 Moisture content . 11
4.5 Geometrical characteristics . 11
4.5.1 Dimensions . 11
4.5.2 Permitted deviations . 11
4.5.3 Machining . 12
4.5.4 Profile . 12
4.6 Characteristics required when in service . 12
4.6.1 General . 12
4.6.2 Species . 13
4.6.3 Renovation and repair . 13
5 Marking . 13
Annex A (informative) Botanical and trade names of the most commonly used species for
hardwood flooring . 14
Annex B (normative) Principles for the classification of the free class . 21
Annex C (informative) Comparison between EN 13226 and EN 13629 . 22
Bibliography . 25
2
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SIST EN 13629:2020
EN 13629:2020 (E)
European foreword
This document (EN 13629:2020) has been prepared by Technical Committee CEN/TC 175 “Round and
Sawn Timber”, the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by September 2020, and conflicting national standards shall
be withdrawn at the latest by September 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 13629:2012.
The main changes with respect to the previous edition EN 13629:2012 is the correction of subclause 4.4
Moisture content – misleading link is removed and range of moisture content adopted.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
3
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SIST EN 13629:2020
EN 13629:2020 (E)
1 Scope
This document specifies the characteristics of individual hardwood boards and pre-assembled hardwood
boards with grooves and/or tongues for internal use as flooring. This document covers hardwood boards
with or without surface coating.
This document does not cover solid parquet elements. (See Annex C).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 351-1, Durability of wood and wood-based products — Preservative-treated solid wood — Part 1:
Classification of preservative penetration and retention
EN 460, Durability of wood and wood-based products — Natural durability of solid wood — Guide to the
durability requirements for wood to be used in hazard classes
EN 1309-3, Round and sawn timber — Methods of measurements — Part 3: Features and biological
degradations
EN 1534, Wood flooring and parquet — Determination of resistance to indentation — Test method
EN 13183-1, Moisture content of a piece of sawn timber — Part 1: Determination by oven dry method
EN 13183-2, Moisture content of a piece of sawn timber — Part 2: Estimation by electrical resistance
method
EN 13647, Wood flooring and wood panelling and cladding — Determination of geometrical characteristics
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 844:2019, EN 13756:2018 and
the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
solid individual hardwood board
wide and generally long solid (single layer) hardwood element which has parallel sides, is machined to a
regular thickness and profile(s) with profiled edges and ends and is capable of being assembled with
other analogous elements (see Figure 1)
4
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SIST EN 13629:2020
EN 13629:2020 (E)
Figure 1 — Individual hardwood board
3.2
solid pre-assembled hardwood board
wide and generally long solid (single-layer) hardwood element, pre-assembled from several strips in
length and width by dovetailing, edge gluing and end jointing which has parallel sides, is machined to a
regular thickness and profile(s) with profiled edges and ends, and is capable of being assembled with
other analogous elements (see Figure 2)
Figure 2 — Solid pre-assembled hardwood board
3.3
strip
smallest single item forming the pre-assembled board
3.4
thickness above the groove
thickness between the face and any discontinuity such as a change in the profile (excluding chamfering),
a groove/glue pocket or a glue line (excluding the glue line of dove-tail joints)
4 Specific product requirements
4.1 Wood species
A list of the most commonly used hardwood species for wood flooring as described in this standard is
given in Annex A.
4.2 Finishing
The product may be delivered with a factory applied surface coating which allows the product to be taken
into use immediately after installation. The surface treatment used and any artificial change of the natural
wood colour shall be stated in the product description.
5
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SIST EN 13629:2020
EN 13629:2020 (E)
4.3 Appearance
4.3.1 General rules
Tables 1 to 4 define the classification relating to appearance rules for the face and for the non-visible
parts (back and edges) of an element of the most commonly used species for solid wood flooring as
defined in this standard.
Features shall be measured according to EN 1309-3 (knots assessed according to the general method in
EN 1309-3). Bio deterioration, permitted only for certain appearance classes (see Tables 1 to 4) is
measured according to EN 1309-3.
A classification with three appearance classes is specified, designated ○, Δ and .
A classification named “Free class” is based on the principles laid out in Annex B.
The face shall include all the visible surface of the element.
Any continuous glue joint which allows renovation without significantly changing the appearance or the
functional characteristics is acceptable.
4.3.2 Classification
The class shall be specified.
The decorative appearance of each species will vary with class.
NOTE The fact that some classes allow many natural characteristics is important when specifying decorative
appearance.
6
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SIST EN 13629:2020
EN 13629:2020 (E)
4.3.3 Rules for the most commonly used species
4.3.3.1 Quercus spp. (oak)
Rules for oak are given in Table 1.
Table 1 — Classification for Quercus spp. (oak)
Face of the element
Class
Features
○ Δ ⧠
Sound sapwood Permitted up to 10 % Permitted up to 50 % of
of the face, if the face, if distributed
distributed
a Permitted if: Permitted if:
Knots
diameter ≤ 15 mm diameter ≤ 35 mm
Sound and
All possible features
intergrown diameter ≤ 5 mm diameter ≤ 25 mm
permitted without limit
Unsound
to size or quantity if
these do not impair the
Checks Permitted up to 50 mm
Not permitted
strength or the wearing
in length per strip
quality of the wood
Bark pockets Not permitted Not permitted
flooring.
Lightning shake Not permitted Permitted
Slope of grain Permitted, no limit Permitted, no limit
Colour variation Permitted Permitted
Medullary ray Permitted Permitted
Biodeterioration Not permitted Not permitted Not permitted, except
blue stain and black
holes
Non-visible parts
All possible features permitted without limit to size or quantity if these do not impair the strength or
the wearing quality of the wood flooring.
a
Cracks in knots and knot holes shall be filled (repaired by sealing with filler).
7
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SIST EN 13629:2020
EN 13629:2020 (E)
4.3.3.2 Fagus sylvatica (European beech)
Rules for European beech are given in Table 2.
Table 2 — Classification for Fagus sylvatica (European beech)
Face of the element
Class
Features
○ Δ ⧠
Sound sapwood Not applicable Not applicable Not applicable
a Permitted if: Permitted if:
Knots
diameter ≤ 10 mm b
Sound and diameter ≤ 33 mm
intergrown diameter ≤ 5 mm
b
diameter ≤ 10 mm
Unsound
All possible features
Checks Very fine and Fine and significant
permitted without limit
significant checks checks permitted
to size or quantity if
permitted
these do not impair the
Bark pockets Not permitted Not permitted
strength or the wearing
quality of the wood
Lightning shake Not permitted Permitted
flooring.
Slope of grain Permitted, no limit Permitted, no limit
Colour variation b Permitted
Permitted
Red heart Not permitted Permitted up to 50 % of
the face, if distributed
Stick marks Not permitted Permitted Permitted
Medullary ray Permitted Permitted Permitted
Biodeterioration Not permitted Not permitted Not permitted, except
blue stain and black
holes
Non-visible parts
All possible features permitted without limit to size or quantity if these do not impair the strength or
the wearing quality of the wood flooring.
a
Cracks in knots and knot holes shall be filled (repaired by sealing with filler).
b
Permitted for steamed beech.
8
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SIST EN 13629:2020
EN 13629:2020 (E)
4.3.3.3 Fraxinus excelsior (European ash) and Acer spp. (maple)
Rules for European ash and maple are given in Table 3.
Table 3 — Classification for Fraxinus excelsior (European ash) and Acer spp. (maple)
Face of the element
Class
Features
○ Δ
Sound sapwood Not applicable Not applicable Not applicable
a Permitted if: Permitted if:
Knots
Sound and intergrown
diameter ≤ 15 mm diameter ≤ 35 mm
European ash
diameter ≤ 10 mm diameter ≤ 33 mm
Maple
diameter ≤ 5 mm, if diameter ≤ 2 mm
Unsound knots
not grouped
All possible features
b
together
permitted without
Checks Not permitted Permitted up to 50 mm limit to size or
quantity if these do
Bark pockets Not permitted Not permitted
not impair the
strength or the
Lightning shake Not permitted Not permitted
wearing quality of
Slope of grain Permitted, no limit Permitted, no limit
the wood flooring.
Colour variation Permitted c
Permitted
Red heart Not permitted Permitted up to 50 %
of the face, if
distributed
Stick marks Not permitted Permitted
Medullary ray Permitted Permitted
Biodeterioration Not permitted Not permitted Not permitted,
except blue stain
and black holes
Non-visible parts
All possible features permitted without limit to size or quantity if these do not impair the strength or
the wearing quality of the wood flooring.
a
Cracks in knots and knot holes shall be filled (repaired by sealing with filler).
b
Knots are grouped together if the distance separating them, measured from edge to edge, does not exceed
30 mm.
c
Blackheart permitted for European ash.
9
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SIST EN 13629:2020
EN 13629:2020 (E)
4.3.3.4 Other hardwoods
Rules for other hardwoods are given in Table 4.
Table 4 — Classification for other hardwoods
Face of the element
Class
Features
○ Δ
Sound sapwood Not permitted Permitted Slight traces
permitted
Knots Permitted if: Permitted if:
Sound and intergrown diameter ≤ 5 mm diameter ≤ 10 mm
Unsound knots diameter ≤ 3 mm diameter ≤ 5 mm
All possible features
Checks Not permitted Not through going.
permitted without
Permitted if the
limit to size or
width ≤ 0,5 % of the
quantity if these do
width of the element
not impair the
Bark pockets Not permitted Not permitted
strength or the
wearing quality of the
Lightning shake Not permitted Not permitted
wood flooring.
Slope of grain Permitted, no limit Permitted, no limit
Colour variation Permitted Permitted
Medullary ray Permitted Permitted
Biodeterioration Not permitted Not permitted Not permitted, except
blue stain and black
holes
Non-visible parts
All possible features permitted without limit to size or quantity if these do not impair the strength or
the wearing quality of the wood flooring.
4.3.4 Free class
The free class covers any species which may be used for wood flooring and for which Brinell hardness
2
has a minimum mean value of 10 N/mm . Hardness shall be measured according to EN 1534. The free
class covers any classification which the producer wishes to offer or which is requested by the buyer. The
proportions or limits of features shall be specifically indicated in the producer's literature/data sheets,
in conformity with Annex B and stated according to Table B.1.
2 2
NOTE 10 N/mm : approximately 1 kgf/mm .
4.3.5 N
...
SLOVENSKI STANDARD
oSIST prEN 13629:2019
01-maj-2019
Lesene talne obloge - Masivne in sestavljene masivne deske listavcev
Wood flooring - Solid individual and pre-assembled hardwood boards
Holzfußböden - Massive Laubholzdielen und zusammengesetzte massive
Laubholzdielen-Elemente
Planchers en bois - Lame de plancher massive individuelle ou pré-assemblée en fois
feuillus
Ta slovenski standard je istoveten z: prEN 13629
ICS:
79.080 Polizdelki iz lesa Semi-manufactures of timber
97.150 Talne obloge Floor coverings
oSIST prEN 13629:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 13629:2019
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oSIST prEN 13629:2019
DRAFT
EUROPEAN STANDARD
prEN 13629
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2019
ICS 79.080; 91.060.30 Will supersede EN 13629:2012
English Version
Wood flooring - Solid individual and pre-assembled
hardwood boards
Planchers en bois - Lame de plancher massive Holzfußböden - Massive Laubholzdielen und
individuelle ou pré-assemblée en fois feuillus zusammengesetzte massive Laubholzdielen-Elemente
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 175.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13629:2019 E
worldwide for CEN national Members.
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oSIST prEN 13629:2019
prEN 13629:2019 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 Specific product requirements . 6
4.1 Wood species . 6
4.2 Finishing . 6
4.3 Appearance . 6
4.3.1 General rules . 6
4.3.2 Classification . 6
4.3.3 Rules for the most commonly used species . 6
4.3.4 Free class . 10
4.3.5 Natural colours . 10
4.4 Moisture content . 10
4.5 Geometrical characteristics . 11
4.5.1 Dimensions . 11
4.5.2 Permitted deviations . 11
4.5.3 Machining . 12
4.5.4 Profile . 12
4.6 Characteristics required when in service . 12
4.6.1 General . 12
4.6.2 Species . 13
4.6.3 Renovation and repair . 13
5 Marking . 13
Annex A (informative) Botanical and trade names of the most commonly used species for
hardwood flooring . 14
Annex B (normative) Principles for the classification of the free class . 21
Annex C (informative) Comparison between EN 13226 and EN 13629 . 22
Bibliography . 25
2
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oSIST prEN 13629:2019
prEN 13629:2019 (E)
European foreword
This document (prEN 13629:2019) has been prepared by Technical Committee CEN/TC 175 “Round and
sawn timber”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document supersedes EN 13629:2012.
The main changes with respect to the previous edition EN 13629:2012 is the correction of subclause 4.4
Moisture content – misleading link is removed and range of target moisture content adopted.
3
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oSIST prEN 13629:2019
prEN 13629:2019 (E)
1 Scope
This document specifies the characteristics of individual hardwood boards and pre-assembled hardwood
boards with grooves and/or tongues for internal use as flooring. This document covers hardwood boards
with or without surface coating.
This document does not cover solid parquet elements. (See Annex C).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 351-1, Durability of wood and wood-based products — Preservative-treated solid wood — Part 1:
Classification of preservative penetration and retention
EN 460, Durability of wood and wood-based products — Natural durability of solid wood — Guide to the
durability requirements for wood to be used in hazard classes
EN 844-1:1995, Round and sawn timber — Terminology — Part 1: General terms common to round timber
and sawn timber
EN 844-3:1995, Round and sawn timber — Terminology — Part 3: General terms relating to sawn timber
EN 844-4:1997, Round and sawn timber — Terminology — Part 4: Terms relating to moisture content
EN 844-6:1997, Round and sawn timber — Terminology — Part 6: Terms relating to dimensions of sawn
timber
EN 844-7:1997, Round and sawn timber — Terminology — Part 7: Terms relating to anatomical structure
of timber
EN 844-9:1997, Round and sawn timber — Terminology — Part 9: Terms relating to features of sawn
timber
EN 844-10:1998, Round and sawn timber — Terminology — Part 10: Terms relating to stain and fungal
attack
EN 844-11:1998, Round and sawn timber — Terminology — Part 11: Terms relating to degrade by insects
EN 844-12:2000, Round and sawn timber — Terminology — Part 12: Additional terms and general index
EN 1310:1997, Round and sawn timber — Method of measurement of features
EN 1309-3, Round and sawn timber — Methods of measurements — Part 3: Features and biological
degradations
EN 1534, Wood flooring — Determination of resistance to indentation — Test method
EN 13183-1, Moisture content of a piece of sawn timber — Part 1: Determination by oven dry method
EN 13183-2, Moisture content of a piece of sawn timber — Part 2: Estimation by electrical resistance
method
EN 13647, Wood flooring and wood panelling and cladding — Determination of geometrical characteristics
4
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oSIST prEN 13629:2019
prEN 13629:2019 (E)
EN 13756:2018, Wood flooring — Terminology
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 844-1:1995, EN 844-3:1995,
EN 844-4:1997, EN 844-6:1997, EN 844-7:1997, EN 844-9:1997, EN 844-10:1998, EN 844-11:1998,
EN 844-12:2000, EN 13756:2018 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
solid individual hardwood board
wide and generally long solid (single layer) hardwood element which has parallel sides, is machined to a
regular thickness and profile(s) with profiled edges and ends and is capable of being assembled with
other analogous elements (see Figure 1)
Figure 1 — Individual hardwood board
3.2
solid pre-assembled hardwood board
wide and generally long solid (single-layer) hardwood element, pre-assembled from several strips in
length and width by dovetailing, edge gluing and end jointing which has parallel sides, is machined to a
regular thickness and profile(s) with profiled edges and ends, and is capable of being assembled with
other analogous elements (see Figure 2)
Figure 2 — Solid pre-assembled hardwood board
3.3
strip
smallest single item forming the pre-assembled board
5
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oSIST prEN 13629:2019
prEN 13629:2019 (E)
3.4
thickness above the groove
thickness between the face and any discontinuity such as a change in the profile (excluding chamfering),
a groove/glue pocket or a glue line (excluding the glue line of dove-tail joints)
4 Specific product requirements
4.1 Wood species
A list of the most commonly used hardwood species for wood flooring as described in this standard is
given in Annex A.
4.2 Finishing
The product may be delivered with a factory applied surface coating which allows the product to be taken
into use immediately after installation. The surface treatment used and any artificial change of the natural
wood colour shall be stated in the product description.
4.3 Appearance
4.3.1 General rules
Tables 1 to 4 define the classification relating to appearance rules for the face and for the non-visible
parts (back and edges) of an element of the most commonly used species for solid wood flooring as
defined in this standard.
Features shall be measured according to EN 1310 (knots assessed according to the general method of 4.1
in EN 1310:1997). Bio deterioration, permitted only for certain appearance classes (see Tables 1 to 4) is
measured according to EN 1311.
A classification with three appearance classes is specified, designated ○, Δ and .
A classification named “Free class” is based on the principles laid out in Annex B.
The face shall include all the visible surface of the element.
Any continuous glue joint which allows renovation without significantly changing the appearance or the
functional characteristics is acceptable.
4.3.2 Classification
The class shall be specified.
The decorative appearance of each species will vary with class.
NOTE The fact that some classes allow many natural characteristics is important when specifying decorative
appearance.
4.3.3 Rules for the most commonly used species
4.3.3.1 Quercus spp. (oak)
Rules for oak are given in Table 1.
6
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oSIST prEN 13629:2019
prEN 13629:2019 (E)
Table 1 — Classification for Quercus spp. (oak)
Face of the element
Class
Features
○ Δ
Sound sapwood
Permitted up to 10 % of Permitted up to 50 % of the
the face, if distributed face, if distributed
a
Knots Permitted if: Permitted if:
diameter ≤ 15 mm diameter ≤ 35 mm
Sound and intergrown
diameter ≤ 5 mm diameter ≤ 25 mm
Unsound
All possible features
permitted without limit to
Checks
Permitted up to 50 mm in
Not permitted
size or quantity if these do
length per strip
not impair the strength or
Bark pockets
Not permitted Not permitted
the wearing quality of the
wood flooring.
Lightning shake
Not permitted Permitted
Slope of grain
Permitted, no limit Permitted, no limit
Colour variation
Permitted Permitted
Medullary ray
Permitted Permitted
Biodeterioration
Not permitted Not permitted Not permitted, except blue
stain and black holes
Non-visible parts
All possible features permitted without limit to size or quantity if these do not impair the strength or the
wearing quality of the wood flooring.
a
Cracks in knots and knot holes shall be filled (repaired by sealing with filler).
4.3.3.2 Fagus sylvatica (European beech)
Rules for European beech are given in Table 2.
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oSIST prEN 13629:2019
prEN 13629:2019 (E)
Table 2 — Classification for Fagus sylvatica (European beech)
Face of the element
Class
Features
○ Δ
Sound sapwood
Not applicable Not applicable Not applicable
a
Knots Permitted if: Permitted if:
b
diameter ≤ 10 mm
diameter ≤ 33 mm
Sound and intergrown
diameter ≤ 5 mm
b
Unsound
diameter ≤ 10 mm
Checks
Very fine and Fine and significant checks
All possible features
significant checks permitted
permitted without limit to
permitted
size or quantity if these do
Bark pockets
Not permitted Not permitted
not impair the strength or
the wearing quality of the
Lightning shake
Not permitted Permitted
wood flooring.
Slope of grain
Permitted, no limit Permitted, no limit
Colour variation
Permitted
b
Permitted
Red heart
Not permitted Permitted up to 50 % of the
face, if distributed
Stick marks
Not permitted Permitted Permitted
Medullary ray
Permitted Permitted Permitted
Biodeterioration
Not permitted Not permitted Not permitted, except blue
stain and black holes
Non-visible parts
All possible features permitted without limit to size or quantity if these do not impair the strength or the
wearing quality of the wood flooring.
a
Cracks in knots and knot holes shall be filled (repaired by sealing with filler).
b
Permitted for steamed beech.
4.3.3.3 Fraxinus excelsior (European ash) and Acer spp. (maple)
Rules for European ash and maple are given in Table 3.
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oSIST prEN 13629:2019
prEN 13629:2019 (E)
Table 3 — Classification for Fraxinus excelsior (European ash) and Acer spp. (maple)
Face of the element
Class
Features
○ Δ
Sound sapwood Not applicable Not applicable Not applicable
a Permitted if: Permitted if:
Knots
Sound and intergrown
diameter ≤ 15 mm diameter ≤ 35 mm
European ash
diameter ≤ 10 mm diameter ≤ 33 mm
Maple
diameter ≤ 5 mm, if diameter ≤ 2 mm
Unsound knots
not grouped
All possible features
b
together
permitted without
Checks Not permitted Permitted up to 50 mm limit to size or
quantity if these do
Bark pockets Not permitted Not permitted
not impair the
Lightning shake Not permitted Not permitted strength or the
wearing quality of
Slope of grain Permitted, no limit Permitted, no limit
the wood flooring.
Colour variation Permitted c
Permitted
Red heart Not permitted Permitted up to 50 %
of the face, if
distributed
Stick marks Not permitted Permitted
Medullary ray Permitted Permitted
Biodeterioration Not permitted Not permitted Not permitted,
except blue stain
and black holes
Non-visible parts
All possible features permitted without limit to size or quantity if these do not impair the strength or
the wearing quality of the wood flooring.
a
Cracks in knots and knot holes shall be filled (repaired by sealing with filler).
b
Knots are grouped together if the distance separating them, measured from edge to edge, does not exceed
30 mm.
c
Blackheart permitted for European ash.
4.3.3.4 Other hardwoods
Rules for other hardwoods are given in Table 4.
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oSIST prEN 13629:2019
prEN 13629:2019 (E)
Table 4 — Classification for other hardwoods
Face of the element
Class
Features
○ Δ
Sound sapwood Not permitted Permitted Slight traces
permitted
Knots Permitted if: Permitted if:
Sound and intergrown diameter ≤ 5 mm diameter ≤ 10 mm
Unsound knots diameter ≤ 3 mm diameter ≤ 5 mm
All possible features
Checks Not permitted Not through going.
permitted without
Permitted if the
limit to size or
width ≤ 0,5 % of the
quantity if these do
width of the element
not impair the
Bark pockets Not permitted Not permitted
strength or the
wearing quality of the
Lightning shake Not permitted Not permitted
wood flooring.
Slope of grain Permitted, no limit Permitted, no limit
Colour variation Permitted Permitted
Medullary ray Permitted Permitted
Biodeterioration Not permitted Not permitted Not permitted, except
blue stain and black
holes
Non-visible parts
All possible features permitted without limit to size or quantity if these do not impair the strength or
the wearing quality of the wood flooring.
4.3.4 Free class
The free class covers any species which may be used for wood flooring and for which hardness HB has a
2
minimum mean value of 10 N/mm . Hardness shall b
...
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