Solid softwood panelling and cladding - Machined profiles with tongue and groove

This European Standard specifies the characteristics of solid wood panelling and cladding with tongue and groove machined from the following most common European species of softwood: spruce/fir, pine, larch, European Douglas Fir and maritime pine.
Products are intended for interior or exterior use.
NOTE   Products sold in the European Economic Area should comply with prEN 14915.

Innen- und Außenbekleidungen aus massivem Nadelholz - Profilholz mit Nut und Feder

Diese Europäische Norm legt die Merkmale von Innen- und Außenbekleidungen aus Massivholz mit Nut und
Feder, die aus den folgenden in Europa am meisten verbreiteten Nadelholzarten hergestellt werden, fest:
Fichte/Tanne, Kiefer, Lärche, Europäische Douglasie und Seekiefer.
Die Produkte sind für die Verwendung im Innen- oder Außenbereich bestimmt.
ANMERKUNG Produkte, die im Europäischen Wirtschaftsraum vertrieben werden sollten prEN 14915 entsprechen.

Lambris et bardages en bois massif résineux - Profilés usinés avec rainure et languette

La présente Norme européenne prescrit les caractéristiques des lambris et bardages en bois massif avec
rainure et languette usinés a partir des essences résineuses européennes les plus communes suivantes :
épicéa/ sapin, pin, méleze, Douglas européen et pin maritime.
Les produits sont destinés a une utilisation intérieure ou extérieure.
NOTE Les produits vendus dans l'espace économique européen devraient satisfaire au prEN 14915.

Notranje in zunanje obloge (opaž) iz masivnega lesa iglavcev – Profili z utorom in peresom

General Information

Status
Published
Publication Date
30-Apr-2006
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-May-2006
Due Date
01-May-2006
Completion Date
01-May-2006

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SLOVENSKI STANDARD
SIST EN 14519:2006
01-maj-2006

Notranje in zunanje obloge (opaž) iz masivnega lesa iglavcev – Profili z utorom in

peresom
Solid softwood panelling and cladding - Machined profiles with tongue and groove

Innen- und Außenbekleidungen aus massivem Nadelholz - Profilholz mit Nut und Feder

Lambris et bardages en bois massif résineux - Profilés usinés avec rainure et languette

Ta slovenski standard je istoveten z: EN 14519:2005
ICS:
79.080 Polizdelki iz lesa Semi-manufactures of timber
SIST EN 14519:2006 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 14519:2006
---------------------- Page: 2 ----------------------
SIST EN 14519:2006
EUROPEAN STANDARD
EN 14519
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2005
ICS 79.080
English Version
Solid softwood panelling and cladding - Machined profiles with
tongue and groove

Lambris et bardages en bois massif résineux - Profilés Innen- und Außenbekleidungen aus massivem Nadelholz -

usinés avec rainure et languette Profilholz mit Nut und Feder
This European Standard was approved by CEN on 21 November 2005.

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 Central Secretariat 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 Central Secretariat has the same status as the official

versions.

CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,

Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,

Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels

© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14519:2005: E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 14519:2006
EN 14519:2005 (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 Requirements......................................................................................................................................6

5.1 General................................................................................................................................................6

5.2 Appearance and finishing ..................................................................................................................7

5.2.1 General................................................................................................................................................7

5.2.2 Grading classes..................................................................................................................................7

5.2.3 Free grade..........................................................................................................................................11

5.3 Moisture content...............................................................................................................................11

5.4 Geometrical characteristics.............................................................................................................11

5.4.1 General..............................................................................................................................................11

5.4.2 Profiles...............................................................................................................................................11

5.4.3 Dimensions and tolerances..............................................................................................................11

5.5 Technical specifications...................................................................................................................14

6 Sampling............................................................................................................................................14

7 Designation.......................................................................................................................................14

Annex A (normative) Principles for the classification of the free class.....................................................16

Annex B (informative) Examples of dimensions..........................................................................................17

Annex C (informative) Sampling in case of dispute.....................................................................................20

Bibliography...................................................................................................................................................21

---------------------- Page: 4 ----------------------
SIST EN 14519:2006
EN 14519:2005 (E)
Foreword

This European Standard (EN 14519:2005) 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 June 2006, and conflicting national standards shall be withdrawn at

the latest by June 2006

This standard is one of a series of standards concerning solid wood panelling and wood flooring (including

parquet).

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following

countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland

and United Kingdom.
---------------------- Page: 5 ----------------------
SIST EN 14519:2006
EN 14519:2005 (E)
Introduction

In this standard the characteristics of solid softwood panelling and cladding are described on the basis of

individual elements.
---------------------- Page: 6 ----------------------
SIST EN 14519:2006
EN 14519:2005 (E)
1 Scope

This European Standard specifies the characteristics of solid wood panelling and cladding with tongue and

groove machined from the following most common European species of softwood: spruce/fir, pine, larch,

European Douglas Fir and maritime pine.
Products are intended for interior or exterior use.
NOTE Products sold in the European Economic Area should comply with prEN 14915.
2 Normative references

The following referenced documents are indispensable for the application of this European Standard. For

dated references, only the edition cited applies. For undated references, the latest edition of the referenced

document (including any amendments) applies.

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 structure content

EN 844-5:1997, Round and sawn timber – Terminology – Part 5: Terms relating to dimensions of round timber

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 844-8:1997, Round and sawn timber – Terminology – Part 8: Terms relating to features of round 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: 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 1309-1:1997, Round and sawn timber – Method of measurement of dimensions – Part 1: Sawn timber

EN 1310:1997, Round and sawn timber - Method of measurement of features

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 – Determination of geometrical

characteristics
EN 13756:2002, Wood flooring – Terminology
---------------------- Page: 7 ----------------------
SIST EN 14519:2006
EN 14519:2005 (E)
3 Terms and definitions

For the purposes of this European Standard, the terms and definitions given in EN 13756:2002, EN 844-

3:1995, EN 844-4 to EN 844-9:1997, EN 844-10 to EN 844-11:1998, EN 844-12:2000 and EN 1309-1:1997

and the following apply.
3.1
panelling and cladding with tongue and groove

tongued and grooved boards of solid wood which have been machined on the face and two edges and have

been finished hit and/or missed on the back. The ends of the boards may be endmatched with tongue and

groove
3.2
panelling
rigid or semi-rigid elements of solid wood mainly for interior use
3.3
cladding
rigid or semi-rigid elements of solid wood mainly for exterior use
3.4
face
visible surface of an element
NOTE includes edges and chamfers
4 Symbols and abbreviations

Symbols and abbreviations used in this European Standard are given in Figure 1, in Tables 3 and 4 and

Tables B.1, B.2, B.3 and B.4.
5 Requirements
5.1 General

The softwood species shall be selected with regard to the appearance expected, the suitability for the

intended purpose and the general characteristics of the species itself. All requirements apply at the time of

production, unless the manufacturer states otherwise.
---------------------- Page: 8 ----------------------
SIST EN 14519:2006
EN 14519:2005 (E)
5.2 Appearance and finishing
5.2.1 General

Grading applies to the face only, unless otherwise specified. Machining requirements are covered in 5.4.4 and

apply to all grades of all species.

The measurement of features shall be in accordance with EN 1310. Concerning knots the general method

given in 4.1.1 of EN 1310:1997 applies.

The boards may be finished with surface coating. The grading shall be done before the coating.

5.2.2 Grading classes

Grading and the features for spruce (Picea spp.) / fir (Abies spp.), scots pine (P.sylvestris), larch (Larix spp.)

and European Douglas Fir (Pseudotsuga menziesii) are given in Table 1. Grading and the features for

Maritime Pine (Pinus pinaster) are given in Table 2.

Table 1 — Grading classes of the wood species: Spruce (Picea spp.), fir (Abies spp.), scots pine

(Pinus sylvestris), larch (Larix spp.) and European Douglas Fir (Pseudotsuga menziesii)

a b c
Features Grade A Grade B
Knots Permitted: Permitted:
- black pin knots up to 5 mm if not in clusters; - black pin knots up to 5 mm;

- sound intergrown knots up to 10 % of width - sound intergrown knots, partially intergrown

of the board + 30 mm; knots, barkringed knots, splay knots, and
dead knots up to 10 % of width of the board +
50 mm;
- partially intergrown knots, barkringed knots,
splay knots and dead knots (not loose);
- occasional loose knots, knot-holes and
Spruce/fir and larch: up to 10 % of width of unsound knots up to 15 mm;
the board +15 mm
- knot plugs of the same wood species.
Scots pine and Douglas Fir: up to 10 % of
width of the board +30 mm;
- occasional small missing and damaged arris
knots up to 20 % of the largest acceptable
knot size provided coverage is not affected;
- knot-plugs of the same wood species, up to
the largest allowed knot size.
Not permitted:
- loose knots, knot-holes and unsound knots;
---------------------- Page: 9 ----------------------
SIST EN 14519:2006
EN 14519:2005 (E)
Table 1 (continued)
a b c
Grade A Grade B
Features
Chipped Grain Permitted Permitted

(machined with knots: up to 20 % of knot area; with knots: up to 40 % of knot area;

damaged spots) with other spots up to 20 % of the maximum with other spots up to 40 % of the maximum

knot size (one per m). knot size.
Compression Permitted
wood
_____________ __________________________________________________________________
Permitted:

Deformation subject to the tongue and groove providing a well-matched joint for the full length

Resin pockets Permitted: Permitted:
- up to the size of 2 mm x 35 mm or equal in
- occasionally up to the size of 2 mm x 25
mm² unlimited ;
mm or equal in mm² with a maximal width of
2 mm;
- 3 resin pockets up to the width of 6 mm and
a total length of 150 mm or equal in mm² per
- 1 resin pocket up to the size of 3 mm x 40
1,5 m in length.
mm or equal in mm² per 1,5 m in length.
Fissures Permitted: Permitted:

(shakes) - hair fissures (barely visible); - face shakes going through (max. 1 mm

wide) up to 300 mm in length;
- end shakes not longer than width of the
boards. end shakes not longer than twice the width,
occasionally permitted if boards have tongue
and groove at the ends.
end shakes:
Boards with T+G at the end: Occasionally if
not longer than ½ of the width of the boards
Not permitted:
Not permitted:
- ring shakes.
- fissures (shakes) through the full thickness
with the exception of end shakes;
- fissu
...

SLOVENSKI STANDARD
SIST EN 14519:2006
01-maj-2006

Notranje in zunanje obloge (opaž) iz masivnega lesa iglavcev – Profili z utorom in

peresom
Solid softwood panelling and cladding - Machined profiles with tongue and groove

Innen- und Außenbekleidungen aus massivem Nadelholz - Profilholz mit Nut und Feder

Lambris et bardages en bois massif résineux - Profilés usinés avec rainure et languette

Ta slovenski standard je istoveten z: EN 14519:2005
ICS:
79.080 Polizdelki iz lesa Semi-manufactures of timber
SIST EN 14519:2006 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 14519:2006
---------------------- Page: 2 ----------------------
SIST EN 14519:2006
EUROPEAN STANDARD
EN 14519
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2005
ICS 79.080
English Version
Solid softwood panelling and cladding - Machined profiles with
tongue and groove

Lambris et bardages en bois massif résineux - Profilés Innen- und Außenbekleidungen aus massivem Nadelholz -

usinés avec rainure et languette Profilholz mit Nut und Feder
This European Standard was approved by CEN on 21 November 2005.

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 Central Secretariat 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 Central Secretariat has the same status as the official

versions.

CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,

Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,

Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels

© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14519:2005: E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 14519:2006
EN 14519:2005 (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 Requirements......................................................................................................................................6

5.1 General................................................................................................................................................6

5.2 Appearance and finishing ..................................................................................................................7

5.2.1 General................................................................................................................................................7

5.2.2 Grading classes..................................................................................................................................7

5.2.3 Free grade..........................................................................................................................................11

5.3 Moisture content...............................................................................................................................11

5.4 Geometrical characteristics.............................................................................................................11

5.4.1 General..............................................................................................................................................11

5.4.2 Profiles...............................................................................................................................................11

5.4.3 Dimensions and tolerances..............................................................................................................11

5.5 Technical specifications...................................................................................................................14

6 Sampling............................................................................................................................................14

7 Designation.......................................................................................................................................14

Annex A (normative) Principles for the classification of the free class.....................................................16

Annex B (informative) Examples of dimensions..........................................................................................17

Annex C (informative) Sampling in case of dispute.....................................................................................20

Bibliography...................................................................................................................................................21

---------------------- Page: 4 ----------------------
SIST EN 14519:2006
EN 14519:2005 (E)
Foreword

This European Standard (EN 14519:2005) 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 June 2006, and conflicting national standards shall be withdrawn at

the latest by June 2006

This standard is one of a series of standards concerning solid wood panelling and wood flooring (including

parquet).

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following

countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland

and United Kingdom.
---------------------- Page: 5 ----------------------
SIST EN 14519:2006
EN 14519:2005 (E)
Introduction

In this standard the characteristics of solid softwood panelling and cladding are described on the basis of

individual elements.
---------------------- Page: 6 ----------------------
SIST EN 14519:2006
EN 14519:2005 (E)
1 Scope

This European Standard specifies the characteristics of solid wood panelling and cladding with tongue and

groove machined from the following most common European species of softwood: spruce/fir, pine, larch,

European Douglas Fir and maritime pine.
Products are intended for interior or exterior use.
NOTE Products sold in the European Economic Area should comply with prEN 14915.
2 Normative references

The following referenced documents are indispensable for the application of this European Standard. For

dated references, only the edition cited applies. For undated references, the latest edition of the referenced

document (including any amendments) applies.

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 structure content

EN 844-5:1997, Round and sawn timber – Terminology – Part 5: Terms relating to dimensions of round timber

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 844-8:1997, Round and sawn timber – Terminology – Part 8: Terms relating to features of round 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: 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 1309-1:1997, Round and sawn timber – Method of measurement of dimensions – Part 1: Sawn timber

EN 1310:1997, Round and sawn timber - Method of measurement of features

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 – Determination of geometrical

characteristics
EN 13756:2002, Wood flooring – Terminology
---------------------- Page: 7 ----------------------
SIST EN 14519:2006
EN 14519:2005 (E)
3 Terms and definitions

For the purposes of this European Standard, the terms and definitions given in EN 13756:2002, EN 844-

3:1995, EN 844-4 to EN 844-9:1997, EN 844-10 to EN 844-11:1998, EN 844-12:2000 and EN 1309-1:1997

and the following apply.
3.1
panelling and cladding with tongue and groove

tongued and grooved boards of solid wood which have been machined on the face and two edges and have

been finished hit and/or missed on the back. The ends of the boards may be endmatched with tongue and

groove
3.2
panelling
rigid or semi-rigid elements of solid wood mainly for interior use
3.3
cladding
rigid or semi-rigid elements of solid wood mainly for exterior use
3.4
face
visible surface of an element
NOTE includes edges and chamfers
4 Symbols and abbreviations

Symbols and abbreviations used in this European Standard are given in Figure 1, in Tables 3 and 4 and

Tables B.1, B.2, B.3 and B.4.
5 Requirements
5.1 General

The softwood species shall be selected with regard to the appearance expected, the suitability for the

intended purpose and the general characteristics of the species itself. All requirements apply at the time of

production, unless the manufacturer states otherwise.
---------------------- Page: 8 ----------------------
SIST EN 14519:2006
EN 14519:2005 (E)
5.2 Appearance and finishing
5.2.1 General

Grading applies to the face only, unless otherwise specified. Machining requirements are covered in 5.4.4 and

apply to all grades of all species.

The measurement of features shall be in accordance with EN 1310. Concerning knots the general method

given in 4.1.1 of EN 1310:1997 applies.

The boards may be finished with surface coating. The grading shall be done before the coating.

5.2.2 Grading classes

Grading and the features for spruce (Picea spp.) / fir (Abies spp.), scots pine (P.sylvestris), larch (Larix spp.)

and European Douglas Fir (Pseudotsuga menziesii) are given in Table 1. Grading and the features for

Maritime Pine (Pinus pinaster) are given in Table 2.

Table 1 — Grading classes of the wood species: Spruce (Picea spp.), fir (Abies spp.), scots pine

(Pinus sylvestris), larch (Larix spp.) and European Douglas Fir (Pseudotsuga menziesii)

a b c
Features Grade A Grade B
Knots Permitted: Permitted:
- black pin knots up to 5 mm if not in clusters; - black pin knots up to 5 mm;

- sound intergrown knots up to 10 % of width - sound intergrown knots, partially intergrown

of the board + 30 mm; knots, barkringed knots, splay knots, and
dead knots up to 10 % of width of the board +
50 mm;
- partially intergrown knots, barkringed knots,
splay knots and dead knots (not loose);
- occasional loose knots, knot-holes and
Spruce/fir and larch: up to 10 % of width of unsound knots up to 15 mm;
the board +15 mm
- knot plugs of the same wood species.
Scots pine and Douglas Fir: up to 10 % of
width of the board +30 mm;
- occasional small missing and damaged arris
knots up to 20 % of the largest acceptable
knot size provided coverage is not affected;
- knot-plugs of the same wood species, up to
the largest allowed knot size.
Not permitted:
- loose knots, knot-holes and unsound knots;
---------------------- Page: 9 ----------------------
SIST EN 14519:2006
EN 14519:2005 (E)
Table 1 (continued)
a b c
Grade A Grade B
Features
Chipped Grain Permitted Permitted

(machined with knots: up to 20 % of knot area; with knots: up to 40 % of knot area;

damaged spots) with other spots up to 20 % of the maximum with other spots up to 40 % of the maximum

knot size (one per m). knot size.
Compression Permitted
wood
_____________ __________________________________________________________________
Permitted:

Deformation subject to the tongue and groove providing a well-matched joint for the full length

Resin pockets Permitted: Permitted:
- up to the size of 2 mm x 35 mm or equal in
- occasionally up to the size of 2 mm x 25
mm² unlimited ;
mm or equal in mm² with a maximal width of
2 mm;
- 3 resin pockets up to the width of 6 mm and
a total length of 150 mm or equal in mm² per
- 1 resin pocket up to the size of 3 mm x 40
1,5 m in length.
mm or equal in mm² per 1,5 m in length.
Fissures Permitted: Permitted:

(shakes) - hair fissures (barely visible); - face shakes going through (max. 1 mm

wide) up to 300 mm in length;
- end shakes not longer than width of the
boards. end shakes not longer than twice the width,
occasionally permitted if boards have tongue
and groove at the ends.
end shakes:
Boards with T+G at the end: Occasionally if
not longer than ½ of the width of the boards
Not permitted:
Not permitted:
- ring shakes.
- fissures (shakes) through the full thickness
with the exception of end shakes;
- fissures e
...

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