SIST EN 13228:2011

SLOVENSKI STANDARD
oSIST prEN 13228:2010
01-januar-2010
/HVHQHWDOQHREORJH0DVLYQHOHVHQHWDOQHREORJHYNOMXþQRVNRFNDPL]DVLVWHPH
]DSRUH
Wood flooring - Solid wood overlay flooring elements including blocks with an
interlocking system
Holzfussböden - Massivholz-Overlay-Parkettstäbe einschliesslich mit einem
Verbindungssystem
Plancher en bois - Lames de parquets en bois massifs de recouvrement, blocs anglais
compris, avec systèmes de guidage
Ta slovenski standard je istoveten z: prEN 13228 rev
ICS:
79.080 Polizdelki iz lesa Semi-manufactures of timber
oSIST prEN 13228:2010 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 13228:2010

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oSIST prEN 13228:2010


EUROPEAN STANDARD
DRAFT
prEN 13228
NORME EUROPÉENNE

EUROPÄISCHE NORM

November 2009
ICS 79.080 Will supersede EN 13228:2002
English Version
Wood flooring - Solid wood overlay flooring elements including
blocks with an interlocking system
Plancher en bois - Lames de parquets en bois massifs de Holzfussböden - Massivholz-Overlay-Parkettstäbe
recouvrement, blocs anglais compris, avec systèmes de einschliesslich mit einem Verbindungssystem
guidage
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 Management Centre has the
same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland 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

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13228:2009: E
worldwide for CEN national Members.

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oSIST prEN 13228:2010
prEN 13228:2009 (E)
Contents Page
Foreword .3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .6
4 Symbols and abbreviations .6
5 Specific product requirements .7
5.1 Wood species .7
5.2 Appearance .7
5.2.1 General rules .7
5.2.2 Rules for the most commonly used species .8
5.2.3 Free class . 14
5.2.4 Natural colours . 14
5.3 Moisture content . 14
5.4 Geometrical characteristics . 14
5.4.1 General . 14
5.4.2 Profile . 14
5.4.3 Nominal dimensions . 16
5.4.4 Limit deviations . 17
5.4.5 Machining . 18
5.5 Technical specifications and properties . 18
5.5.1 Technical characteristics required when in service . 18
5.5.2 Appearance . 19
5.5.3 Renovation and repair . 19
6 Marking . 20
Annex A (informative) Botanical and standard names of the most commonly used species for
wood flooring (hardwood and softwood species) . 21
Annex B (normative) Principles for the classification of the free class . 27
Bibliography . 29

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oSIST prEN 13228:2010
prEN 13228:2009 (E)
Foreword
This document (prEN 13228:2009) 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 will supersede EN 13228:2002.
Compared with EN 13228:2002, the following modifications have been made :
nd
a) Modification of the 2 sentence of the scope;
b) Modification of dimensional characteristics of overlay flooring element (5.4.2.2);
c) Modification of tolerance on length (Table 8 of 5.4.4.1);
d) Modification of limit deviation of cup (5.4.4.2), bow (5.4.4.4), spring (5.4.4.5);
e) Deletion of "specific site requirements (5.5.2);
f) Updating of Clause 2 "Normative references" and Bibliography.
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Introduction
This European Standard is one of a series of standards about wood flooring and wood panelling and cladding.
This standard specifies the characteristics of solid wood flooring elements. It is based upon current dimensional
standards used in the industry and other characteristics together with functions which have been verified by test.
A large amount of knowledge exists about solid wood flooring elements and values for product characteristics
are attested by long use and experience. It is therefore not necessary to have test results. For new products
technical data will have to be verified by testing.
The appearance of the wood flooring is mainly influenced by species, classification and the pattern.
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1 Scope
This European Standard specifies the characteristics of solid wood overlay flooring including blocks with an
interlocking system for internal use as flooring. It applies to elements. This standard does not apply to panels
)
made from elements, for which a separate standard is in course of preparation.
This standard covers elements with and without surface coating.
2 Normative references
The following referenced documents are indispensable for the application 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 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 1311, Round and sawn timber - Method of measurement of biological degrade.
EN 1534, Wood and parquet flooring – Determination of resistance to indentation (Brinell) - 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 and parquet flooring and wood panelling and cladding – Measurement of geometrical
characteristics.
EN 13756:2002, Wood flooring – terminology.
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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 844-9:1997, EN 844-10:1998, EN 844-11:1998, EN 844-12:2000 and in EN
13756:2002 and the following apply:
3.1
block
element with an interlocking system, defined by the relevant dimensional limits in 5.4.3 and Tables 7 and 8.
3.2
overlay flooring element
element with an interlocking system with a thickness which renders it suitable for laying on a continuous
supporting surface
[EN 13756:2002]
3.3
interlocking system
system of assembly based upon a male and a female profile that does not have a load-bearing function,
allowing the positioning of elements during installation
[EN 13756:2002]
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 finger-joints)
[EN 13756:2002]
4 Symbols and abbreviations
L Length of the face of the element
b Width of the face of the element
b Depth of the female profile
1
b Width of the male profile
2
b Undercut
3
t Thickness between the face and the back of the element
t Thickness above the groove
1
t Width of the female profile
2
t Thickness of the male profile
3
t Thickness of the part below the male profile
4
α Angle that an edge makes to a plane normal to adjacent face, in degrees.

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5 Specific product requirements
5.1 Wood species
A list of the most commonly used species for wood flooring elements as described in this standard is given in
Annex A.
5.2 Appearance
5.2.1 General rules
Tables 1 to 6 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). Biodeterioration is measured according to EN 1311.
A classification with three appearance classes is specified, designated�, ∆ and �.
A classification named "Free class" is based on the principles laid out in Annex B.
1)
The face shall include all the visible surface of the element. It shall therefore extend to the chamfering if
any.
The face shall be free from shake and the wood shall be sound.
Any continuous glue joint which allows renovation without significantly changing the appearance or the
functional characteristics is acceptable.



1) the chamfering is visible when elements are assembled.
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5.2.2 Rules for the most commonly used species
5.2.2.1 Quercus spp. (oak)
Rules for oak are given in Table 1.
Table 1 — Classification for Quercus spp. (oak)
Face of the element
Class
Features
� ∆∆ �
∆∆
Sound sapwood Not permitted Permitted Slight traces
permitted
Knots Permitted if: Permitted if: Permitted if:
Sound and intergrown
diameter ≤ 2 mm diameter ≤ 5 mm diameter ≤ 15 mm


Unsound knots Not permitted
diameter ≤ 3 mm diameter ≤ 10 mm
Checks Not permitted Permitted up to 15 mm
in length
Bark pockets Not permitted Not permitted
All features
permitted without
limit to size or
Lightning shake Not permitted Not permitted
quantity if these do
not impair the
Slope of grain Permitted, no limit Permitted, no limit
strength or the
wearing quality of
the wood flooring.
a
Colour variation Slight variation Permitted
permitted
Medullary ray Permitted Permitted
Biodeterioration Not permitted Not permitted Not permitted,
except blue stain
and black holes
Non-visible parts
All features permitted without limit to size or quantity if these do not impair the strength or the wearing quality
of the wood flooring.
Sound sapwood is permitted from the back up to the upper part of the male profile of the interlocking system
without taking into account the limits set for the face.
a
Brown oak.

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5.2.2.2 Fraxinus excelsior (European ash) and Acer spp. (maple)
Rules for European ash and maple are given in Table 2.
Table 2 — Classification for Fraxinus excelsior (European ash) and Acer spp. (maple)
Face of the element
Class
Features
� ∆∆ �
∆∆
Sound sapwood
Not applicable Not applicable Not applicable
Knots Permitted if: Permitted if: Permitted if:
Sound and intergrown
b < 70 mm diameter ≤ 2 mm diameter ≤ 5 mm diameter ≤ 15 mm
b ≥ 70 mm diameter ≤ 3 mm diameter ≤ 10 mm diameter ≤ 30 mm

Unsound knots Not permitted
diameter ≤ 3 mm diameter ≤ 10 mm
Checks Not permitted Not permitted
Not permitted
Bark pockets Not permitted Not permitted
Not permitted
Lightning shake Not permitted Not permitted
Not permitted
Slope of grain
Permitted, no limit Permitted, no limit
Permitted, no limit
Colour variation Slight variation Permitted Permitted
permitted. Slight traces
of natural discoloration
(mineral lines)
permitted.
Stick marks Not permitted Permitted Permitted
Not permitted,
Biodeterioration Not permitted Not permitted
except blue stain
and black holes
Non-visible parts
All features permitted without limit to size or quantity if these do not impair the strength or the wearing quality
of the wood flooring.

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5.2.2.3 Fagus sylvatica (European beech)
Rules for European beech are given in Table 3.
Table 3 — Classification for Fagus sylvatica (European beech)
Face of the element
Class
Features
� �
∆∆∆∆
Sound sapwood Not applicable Not applicable Not applicable
Knots Permitted if: Permitted if: Permitted if:
Sound and intergrown
b < 70 mm diameter ≤ 2 mm diameter ≤ 5 mm diameter ≤ 15 mm
b ≥ 70 mm diameter ≤ 3 mm diameter ≤ 10 mm diameter ≤ 30 mm

Unsound knots Not permitted
diameter ≤ 3 mm diameter ≤ 10 mm
Checks Not permitted Not permitted Not permitted
Bark pockets Not permitted Not permitted Not permitted
Lightning shake
Not permitted Not permitted Not permitted
Slope of grain Permitted, no limit Permitted, no limit Permitted, no limit
Colour variation Slight variation Permitted Permitted
a
permitted . Slight
traces of natural
discoloration permitted.
Red heart Not permitted Permitted Permitted
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 features permitted without limit to size or quantity if these do not impair the strength or the wearing quality
of the wood flooring.
a
Permitted for steamed beech.

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5.2.2.4 Betula spp. (birch)
Rules for birch are given in Table 4.
Table 4 — Classification for Betula spp. (birch)
Face of the element
Class
Features
� ∆∆ �
∆∆
Sound sapwood Not applicable Not applicable Not applicable
Knots Permitted if: Permitted if: Permitted if:
Sound and intergrown
b < 70 mm diameter ≤ 2 mm diameter ≤ 5 mm diameter ≤ 15 mm
b ≥ 70 mm diameter ≤ 3 mm diameter ≤ 10 mm diameter ≤ 30 mm


Unsound knots
Not permitted
diameter ≤ 3 mm diameter ≤ 10 mm
Checks Not permitted Not permitted Not permitted
Bark pockets Not permitted Not permitted Not permitted
Lightning shake Not permitted Not permitted Not permitted
Slope of grain Permitted, no limit Permitted, no limit Permitted, no limit
Biodeterioration Not permitted Not permitted Not permitted,
except blue stain
and black holes
Stick marks Not permitted Permitted Permitted
Colour variation Slight variation Permitted Permitted
permitted. Slight traces
of natural discoloration
and mineral lines
permitted.
Non-visible parts
All features permitted without limit to size or quantity if these do not impair the strength or the wearing quality
of the wood flooring.

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5.2.2.5 Castanea sativa spp. (sweet chestnut)
Rules for sweet chestnut are given in Table 5.
Table 5 — Classification for Castanea sativa spp. (sweet chestnut)
Face of the element
Class
Features
� ∆∆ �
∆∆
Sound sapwood Not permitted Not permitted Slight traces
permitted
Knots Permitted if: Permitted if: Permitted if:
Sound and intergrown
b < 70 mm diameter ≤ 2 mm diameter ≤ 5 mm diameter ≤ 15 mm
b ≥ 70 mm diameter ≤ 3 mm diameter ≤ 10 mm diameter ≤ 30 mm

Unsound knots
diameter ≤ 1 mm diameter ≤ 3 mm diameter ≤ 10 mm
Yellow stain Not permitted 50 % permitted Permitted
Checks Not permitted Permitted when the Permitted when the
length ≤ width of the length ≤ 50 % of
element the length of the
element
Bark pockets Not permitted Not permitted Permitted
Lightning shake Not permitted Not permitted Permitted
Slope of grain Permitted, no limit Permitted, no limit Permitted, no limit
Colour variation Slight variation Permitted Permitted
permitted.
Biodeterioration Not permitted Not permitted Not permitted
Non-visible parts
All features permitted without limit to size or quantity if these do not impair the strength or the wearing quality
of the wood flooring.
Sound sapwood is permitted up to 50 % of the thickness.

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5.2.2.6 Other hardwoods
Rules for other hardwoods are given in Table 6.
Table 6 — Classification for other
...