ISO 21629-2:2022

INTERNATIONAL ISO
STANDARD 21629-2
First edition
2022-08
Bamboo floorings —
Part 2:
Outdoor use
Planchers en bambou —
Partie 2: Utilisation en extérieur
Reference number
ISO 21629-2:2022(E)
© ISO 2022

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ISO 21629-2:2022(E)
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© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
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ISO 21629-2:2022(E)
Contents Page
Foreword .iv
1 Scope . 1
2 N ormative references . 1
3 T erms and definitions . 1
4 R equirements . 3
4.1 A ppearance requirements . 3
4.2 Dimension requirements . 3
4.3 Property requirements . 4
4.3.1 Physical and mechanical requirements . 4
4.3.2 O ther declarations at the time of the first delivery . 5
5 T est samples .5
5 .1 S a mpl in g . 5
5.2 D imensions and quantity . 6
5.2.1 L aminated bamboo flooring . 6
5.2.2 B amboo scrimber flooring . 7
6 H andling, storage, packaging and marking . 9
6.1 Ha ndling, storage and packaging . 9
6.2 M arking . 9
Annex A (normative) Determination of moisture content .10
Annex B (normative) Test method of thickness and width swelling .11
Annex C (normative) Test method of bonding quality .13
Bibliography .14
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ISO 21629-2:2022(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
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described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
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This document was prepared by Technical Committee ISO/TC 296, Bamboo and rattan.
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INTERNATIONAL STANDARD ISO 21629-2:2022(E)
Bamboo floorings —
Part 2:
Outdoor use
1 S cope
This document specifies the technical requirements, test methods and requirements for the handling,
storage, packaging and marking of outdoor bamboo flooring.
It is applicable to outdoor bamboo flooring including bamboo laminated flooring and bamboo scrimber
flooring.
2 Normat ive 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.
ISO 9424, Wood-based panels — Determination of dimensions of test pieces
ISO 9426, Wood-based panels — Determination of dimensions of panels
ISO 9427, Wood-based panels — Determination of density
ISO 16978, Wood-based panels — Determination of modulus of elasticity in bending and of bending strength
ISO 16979, Wood-based panels — Determination of moisture content
ISO 17959, General requirements for solid wood flooring
ISO 20585:2005, Wood-based panels — Determination of wet bending strength after immersion in water
at 70 degrees C or 100 degrees C (boiling temperature)
EN 17009:2019, Flooring of lignified materials other than wood — Characteristics, assessment and
verification of constancy of performance and marking
3 T erms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
bamboo flooring
assembled bamboo-based panel used as floor boards
[SOURCE: ISO 21625: 2020, 3.3.4]
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ISO 21629-2:2022(E)
3.2
bamboo scrimber
panel or lumber made of compressed bamboo fibre bundle strips or compressed bamboo fibre bundle
sheet
[SOURCE: ISO 21625: 2020, 3.2.17]
3.3
laminated bamboo flooring
flooring product made from laminated bamboo strips
[SOURCE: ISO 21625: 2020, 3.3.4.2]
3.4
bamboo scrimber flooring
flooring product made of bamboo scrimber (3.2)
[SOURCE: ISO 21625: 2020, 3.3.4.3]
3.5
bamboo outer layer
hard, compact sheath of bamboo culm which is exposed to the external environment
[SOURCE: ISO 21625: 2020, 3.1.3]
3.6
bamboo inner layer
soft inside layer of the bamboo culm, serving as boundary to the hollow central portion of the culm
[SOURCE: ISO 21625: 2020, 3.1.4]
3.7
squareness
distance, d , between the panel edge and the side of the other arm of the square
1
Note 1 to entry: The squareness is shown in Figure 1.
Dimensions in millimetres
Figure 1 — Example of squareness
3.8
decay
decomposition of bamboo by fungi or other micro-organisms resulting in softening, progressive loss of
mass and strength, and often a change of texture and colour
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ISO 21629-2:2022(E)
3.9
crack
lengthwise separation of the bamboo fibres caused chiefly by shrinkage in drying and/or mechanical
damage
3.10
gap
opening on the face or bottom of the bamboo flooring (3.1) product
3.11
splinter
filament protrusion on the surface of bamboo scrimber (3.2)
4 R equirements
4.1 A ppearance requirements
The material used for the bamboo flooring shall be free from physical damage, decay and insect attack.
There may be variations from element to element, but the total impression of the installed flooring shall
show a homogeneous character.
Any part of the material that hinders preservation, bonding and finishing shall be removed entirely.
As bamboo is a natural material, colour variations can occur naturally or due to exposure to light over
time.
The appearance requirements of bamboo flooring for outdoor use are indicated in Table 1.
Table 1 — Appearance requirements
Types of defects Laminated bamboo flooring Bamboo scrimber flooring
Bamboo outer Permitted if this does not impair the
layer bonding strength between the bundles of
a
the bamboo flooring
Bamboo inner
layer
Not permitted
Splinter
Cracks Not permitted
Gaps
a
If the bonding strength between the bundles of the bamboo flooring is impaired by outer layer and inner layer, they
shall be removed.
4.2 Dimension r equirements
The dimension requirements of bamboo flooring for outdoor use are indicated in Table 2.
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