SIST EN ISO 9229:2020

Thermal insulation - Vocabulary (ISO 9229:2020)

This document provides a vocabulary of terms used in the field of thermal insulation that covers
materials, products, components and applications. Some of the terms can have a different meaning
when used in other industries or applications.

Wärmedämmung - Begriffe (ISO 9229:2020)

Dieses Dokument enthält Begriffsbestimmungen für die Anwendung im Bereich der Wärmedämmung von Materialien, Produkten, Bauteilen und Anwendungen. Einige der Begriffe können eine andere Bedeutung haben, wenn sie in anderen Industriezweigen oder Anwendungsbereichen benutzt werden.

Isolation thermique - Vocabulaire (ISO 9229:2020)

Le présent document fournit un vocabulaire de termes relatifs aux matériaux, produits, composants et applications utilisés dans le domaine de l'isolation thermique. Certains de ces termes peuvent avoir une signification différente lorsqu'ils sont utilisés par d'autres industries ou pour d'autres applications.

Toplotna izolacija - Slovar (ISO 9229:2020)

General Information

• Status: Published
• Public Enquiry End Date: 26-Sep-2019
• Publication Date: 28-Jul-2020
• ICS: 01.040.27 - Energy and heat transfer engineering (Vocabularies)
• ICS: 01.040.91 - Construction materials and building (Vocabularies)
• ICS: 27.220 - Heat recovery. Thermal insulation
• ICS: 91.120.10 - Thermal insulation of buildings
• Technical Committee: TOP - Thermal insulation
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 08-Jul-2020
• Due Date: 12-Sep-2020
• Completion Date: 29-Jul-2020
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Mandate: M/103 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on thermal insulating products
• Ref Project: EN ISO 9229:2020 - Thermal insulation - Vocabulary (ISO 9229:2020)

RELATIONS

• Replaces: SIST EN ISO 9229:2008 - Thermal insulation - Vocabulary (ISO 9229:2007)
• Effective Date: 01-Sep-2020

Standards Content (sample)

SLOVENSKI STANDARD
SIST EN ISO 9229:2020
01-september-2020
Nadomešča:
SIST EN ISO 9229:2008
Toplotna izolacija - Slovar (ISO 9229:2020)
Thermal insulation - Vocabulary (ISO 9229:2020)
Wärmedämmung - Begriffe (ISO 9229:2020)
Isolation thermique - Vocabulaire (ISO 9229:2020)
Ta slovenski standard je istoveten z: EN ISO 9229:2020
ICS:
01.040.27 Prenos energije in toplote Energy and heat transfer
(Slovarji) engineering (Vocabularies)
01.040.91 Gradbeni materiali in gradnja Construction materials and
(Slovarji) building (Vocabularies)
27.220 Rekuperacija toplote. Heat recovery. Thermal
Toplotna izolacija insulation
91.120.10 Toplotna izolacija stavb Thermal insulation of
buildings
SIST EN ISO 9229:2020 en,fr,de

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

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SIST EN ISO 9229:2020
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SIST EN ISO 9229:2020
EN ISO 9229
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2020
EUROPÄISCHE NORM
ICS 01.040.27; 27.220 Supersedes EN ISO 9229:2007
English Version
Thermal insulation - Vocabulary (ISO 9229:2020)

Isolation thermique - Vocabulaire (ISO 9229:2020) Wärmedämmung - Begriffe (ISO 9229:2020)

This European Standard was approved by CEN on 9 June 2020.

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 ISO 9229:2020 E

worldwide for CEN national Members.
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SIST EN ISO 9229:2020
EN ISO 9229:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 9229:2020
EN ISO 9229:2020 (E)
European foreword

This document (EN ISO 9229:2020) has been prepared by Technical Committee ISO/TC 163 "Thermal

performance and energy use in the built environment" in collaboration with Technical Committee

CEN/TC 88 “Thermal insulating materials and products” the secretariat of which is held by DIN.

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 December 2020, and conflicting national standards

shall be withdrawn at the latest by December 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 ISO 9229:2007.

According to the CEN-CENELEC Internal Regulations, the national standards organizations 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.
Endorsement notice

The text of ISO 9229:2020 has been approved by CEN as EN ISO 9229:2020 without any modification.

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SIST EN ISO 9229:2020
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SIST EN ISO 9229:2020
INTERNATIONAL ISO
STANDARD 9229
Third edition
2020-06
Thermal insulation — Vocabulary
Isolation thermique — Vocabulaire
Reference number
ISO 9229:2020(E)
ISO 2020
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SIST EN ISO 9229:2020
ISO 9229:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
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SIST EN ISO 9229:2020
ISO 9229:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

3.1 Thermal insulation materials ..................................................................................................................................................... 1

3.2 Thermal insulation products ...................................................................................................................................................... 5

3.3 Form of supply ......................................................................................................................................................................................... 7

3.4 Thermal insulation, systems and applications .........................................................................................................11

3.5 Thermal insulation components...........................................................................................................................................13

3.6 Common terms .....................................................................................................................................................................................14

3.7 Testing and certification terms ..............................................................................................................................................16

Annex A (informative) Thermal insulation concept ..........................................................................................................................18

Bibliography .............................................................................................................................................................................................................................19

© ISO 2020 – All rights reserved iii
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SIST EN ISO 9229:2020
ISO 9229:2020(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

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/

iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 163, Thermal performance and energy

use in the built environment, in collaboration with the European Committee for Standardization (CEN)

Technical Committee CEN/TC 88, Thermal insulating materials and products, in accordance with the

Agreement on technical cooperation between ISO and CEN (Vienna Agreement).

This third edition cancels and replaces the second edition (ISO 9229:2007), which has been technically

revised.
The main changes compared to the previous edition are as follows:
— revised ETICS definition;

— thorough review of cross-references with numerous new additions and corrections;

— double term entries have been either given their own terminology entries or identified as preferred

and accepted terms;
— circular definitions have been corrected;

— pipe section superordinate concept changed as parent term and subordinate terms expanded to

1) concentric pipe section, 2) precision v-groove pipe section, 3) cut pipe section, 4) moulded pipe

section;

— vapour barrier and vapour retarder definitions have been revised and clarified.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2020 – All rights reserved
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SIST EN ISO 9229:2020
INTERNATIONAL STANDARD ISO 9229:2020(E)
Thermal insulation — Vocabulary
1 Scope

This document provides a vocabulary of terms used in the field of thermal insulation that covers

materials, products, components and applications. Some of the terms can have a different meaning

when used in other industries or applications.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1 Thermal insulation materials
3.1.1
thermal insulation material

substance that is intended to reduce heat transfer and that derives its insulation properties from its

chemical nature, its physical structure or both
3.1.2
cellular plastic

thermal insulation material (3.1.1) made from plastic, in which the density is reduced by the presence

of numerous small cavities (cells), which may be interconnecting or not, dispersed throughout the

material
3.1.2.1
expanded polystyrene
EPS

rigid cellular plastic (3.1.2) thermal insulation material (3.1.1) manufactured by moulding beads of

expandable polystyrene or one of its co-polymers and that has a substantially closed-cell structure,

filled with air
3.1.2.2
extruded polystyrene foam
XPS

rigid cellular plastic (3.1.2) thermal insulation material (3.1.1) made from polystyrene or one of its co-

polymers, which has a closed-cell structure and is produced through an extrusion process

3.1.2.3
flexible elastomeric foam
FEF

pliable thermal insulation product (3.2.1) made of natural or synthetic rubber, or a mixture of the two,

and containing other polymers and other chemicals that may be modified by organic or inorganic

additives
© ISO 2020 – All rights reserved 1
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SIST EN ISO 9229:2020
ISO 9229:2020(E)
3.1.2.4
phenolic foam

rigid cellular plastic (3.1.2) thermal insulation material (3.1.1), the polymer structure of which is made

primarily from the poly-condensation of phenol, its homologues and/or derivatives with aldehydes

or ketones
3.1.2.5
polyethylene foam
PEF

semi-rigid or flexible cellular plastic (3.1.2) thermal insulation material (3.1.1) based on polymers

derived mainly from ethylene and/or propylene
3.1.2.6
polyurethane foam
PUR

rigid or semi-rigid cellular plastic (3.1.2) thermal insulation material (3.1.1) with a substantially closed-

cell structure based on polyurethanes
3.1.2.7
urea formaldehyde foam

cellular plastic (3.1.2) thermal insulation material (3.1.1) with a substantially open-cell structure, based

on an amino resin made by the polycondensation of urea with formaldehyde
3.1.2.8
expanded polyvinyl chloride

rigid or semi-rigid cellular plastic (3.1.2) thermal insulation material (3.1.1) based on vinyl chloride

polymers expanded to form a cellular structure consisting substantially of closed cells

3.1.2.9
polyisocyanurate foam
PIR

rigid cellular plastic (3.1.2) thermal insulation material (3.1.1) with a substantially closed-cell structure

based on polymers mainly of the isocyanurate type
3.1.3
cellular glass

rigid thermal insulation material (3.1.1) made from expanded glass with a closed-cell structure

3.1.4
calcium silicate

thermal insulation material (3.1.1) comprised of calcium oxide and silicon dioxide, normally reinforced

by incorporating fibres
3.1.5
aluminosilicate wool
ASW

amorphous high temperature insulating wool (HTIW) predominantly produced by melting a

combination of Al O and SiO , and may contain ZrO and Cr O
2 3 2 2 2 3
3.1.6
magnesia

thermal insulation material (3.1.1), composed principally of basic magnesium carbonate that

incorporates fibre as a reinforcing agent
2 © ISO 2020 – All rights reserved
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SIST EN ISO 9229:2020
ISO 9229:2020(E)
3.1.7
expanded clay

lightweight granular thermal insulation material (3.1.1), having a cellular structure formed by expanding

clay minerals by heat
3.1.8
expanded perlite
perlite

lightweight granular thermal insulation material (3.1.1), manufactured from naturally occurring

volcanic rock, expanded by heat to form a cellular structure
3.1.9
exfoliated vermiculite
vermiculite

thermal insulation material (3.1.1) that results from expanding or exfoliating a natural micaceous

mineral by heating
3.1.10
diatomaceous insulation

thermal insulation material (3.1.1) composed mainly of the skeletons of diatoms (cellular siliceous

particles of microscopic size)

Note 1 to entry: It is available in the form of a powder, bonded or granular material. See diatomaceous brick

(3.2.10).
3.1.11
expanded rubber

cellular rubber thermal insulation material (3.1.1) having closed cells, made from a solid rubber

compound
3.1.12
cellulose insulation

fibrous thermal insulation material (3.1.1) derived from paper, paperboard stock or wood

3.1.13
cork

protective layer of the cork oak tree (Quercus Suber L), which can be periodically removed from its

trunk and branches to provide the raw material for cork products
3.1.14
fibrous insulation

thermal insulation material (3.1.1) composed of naturally occurring or manufactured fibres

3.1.15
wood wool
thermal insulation material (3.1.1) composed of long shavings of wood
3.1.16
hemp wool
thermal insulation material (3.1.1) composed of hemp fibres
3.1.17
sheep wool
thermal insulation material (3.1.1) composed of sheep wool fibres
3.1.18
mineral fibre
thermal insulation material (3.1.1) composed of non-metallic inorganic fibres
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SIST EN ISO 9229:2020
ISO 9229:2020(E)
3.1.18.1
ceramic fibre
inorganic fibres manufactured from metal oxides or clays
3.1.19
mineral wool

fibrous thermal insulation material (3.1.1) manufactured from molten rock, slag or glass

3.1.19.1
glass wool

mineral wool (3.1.19) manufactured predominantly from natural sand or molten glass

3.1.19.2
stone wool

mineral wool (3.1.19) manufactured predominantly from molten naturally occurring igneous rock

3.1.19.3
slag wool
mineral wool (3.1.19) manufactured predominantly from molten furnace slag
3.1.20
loose wool

mineral wool (3.1.19) or other materials of a woolly consistency, with or without a binder (3.5.8), and

having a random fibre orientation
3.1.21
polycrystalline wool
PCW

wool consisting of fibres produced by the sol-gel method, whose fibres are subsequently heat treated to

achieve the polycrystalline structure
3.1.22
alkaline-earth-silicate wool
AES

amorphous high temperature insulating wool (HTIW) predominantly produced by melting a

combination of CaO, MgO and SiO , with low biopersistence
3.1.23
asbestos fibre

fibre obtained by the separation into fine filaments of naturally occurring mineral silicates, which

possess a crystalline structure

WARNING — Asbestos fibres are not generally recommended for use in the manufacture of

thermal insulation products (3.2.1) because of their known health hazards. Refer to national

regulations.

Note 1 to entry: Products related to asbestos carry the names of chrysotile, crocidolite, amosite, tremolite,

actinolite and anthophyllite.
3.1.24
carbon fibre

organic fibres that have been carbonized, but not thermally stabilized, and consist essentially of carbon

3.1.25
cellular concrete

thermal insulation material (3.1.1) composed of concrete containing a substantial number of small air cells

3.1.25.1
insulating castable refractory

cellular concrete (3.1.25) that contains a suitably graded, insulating refractory aggregate

4 © ISO 2020 – All rights reserved
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SIST EN ISO 9229:2020
ISO 9229:2020(E)
3.1.26
foamed slag concrete
cellular concrete (3.1.25) with foamed slag as aggregate
3.1.27
foamed slag aggregate
furnace slag treated to produce lightweight aggregate (3.2.5)
3.1.28
graphite fibre

carbon fibre (3.1.24) that has been thermally stabilized at temperatures up to the graphitization

temperature
3.1.29
aerated autoclaved concrete
AAC

porous thermal insulation material (3.1.1) produced by solidifying a mortar consisting of silica sand

(pure quartz), cement, lime and water under high pressured steam
3.1.30
insulating concrete

concrete in the oven-dry condition having a density of not less than 800 kg/m and not more than

2 000 kg/m
Note 1 to entry: Insulating concrete may be cured by autoclaving.
[SOURCE: EN 206:2013+A1: 2016, 3.1.4.1]
3.1.31
insulating plaster

thermal insulation material (3.1.1) composed of plaster that contains lightweight aggregate (3.2.5)

3.1.32
perlite plaster

thermal insulation material (3.1.1) composed of plaster that contains expanded perlite (3.1.8) aggregate

3.1.33
microporous insulation

thermal insulation material (3.1.1) in the form of compacted powder or fibres with an average

interconnecting pore size comparable to or below the mean free path of air molecules at standard

atmospheric pressure

Note 1 to entry: Microporous insulation may contain opacifiers to reduce the amount of radiant heat transmitted.

3.1.34
unbonded insulation
loose thermal insulation material (3.1.1) manufactured without binder (3.5.8)
3.1.35
polyester fibre insulation

man-made fibrous thermal insulation material (3.1.1) made from polyester fibres, with or without the

addition of adhesive binders (3.5.8) applied during the manufacturing process
3.2 Thermal insulation products
3.2.1
thermal insulation product

thermal insulation material (3.1.1) in its finished form, including any facings (3.5.1) or coatings (3.5.4)

© ISO 2020 – All rights reserved 5
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SIST EN ISO 9229:2020
ISO 9229:2020(E)
3.2.2
composite insulation product

thermal insulation product (3.2.1) made from two or more layers of different thermal insulation materials

(3.1.1), in which each layer of insulation is bonded to the adjacent layer(s)
Note 1 to entry: See also composite insulation (3.4.13).
3.2.3
in‑situ thermal insulation product

thermal insulation product (3.2.1) produced or taking its final form at the site of application and that

achieves its properties after installation
3.2.3.1
blowing wool

granulated wool (3.2.3.2) or loose-fill insulation (3.3.22) for application or installation by pneumatic

equipment
3.2.3.2
granulated wool

thermal insulation product (3.2.1) obtained by mechanically processing mineral wool (3.1.19) or other

materials of a woolly consistency into pieces having a rounded but irregular shape

3.2.3.3
granulated cork

thermal insulation product (3.2.1) composed of fragments of cork (3.1.13) obtained by grinding and/or

milling raw cork, corkwood or cut pieces
3.2.3.4
spray-applied polyurethane

cellular polyurethane foam (3.1.2.6) thermal insulation product (3.2.1), which is foamed in‑situ

insulation (3.4.5)
3.2.3.5
spray-applied polyisocyanurate

polyisocyanurate foam (3.1.2.9) thermal insulation product (3.2.1), which is foamed in‑situ insulation (3.4.5)

3.2.3.6
injected urea formaldehyde foam

urea formaldehyde cellular plastic (3.1.2) thermal insulation product (3.2.1) [see UF (3.1.2.7)], which is

foamed in‑situ insulation (3.4.5)
3.2.4
lamella product

product made from fibrous materials in which the general orientation of the fibres is

perpendicular to the major surfaces
3.2.5
lightweight aggregate
material or product composed of porous expanded granules
3.2.6
expanded perlite board
EPB

rigid insulation board manufactured from expanded perlite (3.1.8), reinforcing fibres and binding agents

3.2.7
wood wool slab
WW slab

rigid thermal insulation product (3.2.1) manufactured from loose wood wool (3.1.15), bonded with a

binder (3.5.8) and compressed to its final thickness
6 © ISO 2020 – All rights reserved
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SIST EN ISO 9229:2020
ISO 9229:2020(E)
3.2.8
insulating cement

mixture of dry-fibrous and/or powdery materials that, when mixed with water, develop a plastic

consistency and dry in place
3.2.9
wood fibre product

thermal insulation product (3.2.1) manufactured from wood fibres, with or without the addition of a

bonding agent, compressed to its finished form with or without the application of heat

3.2.10
diatomaceous brick
fired insulating brick (3.3.19) composed mainly of the skeletons of diatoms
Note 1 to entry: See diatomaceous insulation (3.1.10).
3.2.11
millboard
dense board made from cellulosic and/or other fibres
3.2.12
pouring wool

granulated fibrous thermal insulation product (3.2.1) for manual application or pouring

Note 1 to entry: See loose-fill insulation (3.3.22) and poured application (3.4.15).

3.2.13
backing insulation

thermal insulation material (3.1.1) or thermal insulation product (3.2.1) that is shielded from high

temperature and/or abrasive conditions by a more heat-resistant and/or protective material

3.3 Form of supply
3.3.1
block

product generally of rectangular cross-section and with a thickness not significantly

smaller than the width
3.3.2
insulated concrete form
ICF

system of formwork made with a rigid thermal insulation product (3.2.1) that stays in place as a

permanent interior and exterior substrate for walls, floors, and roofs
Note 1 to entry: The forms are filled with concrete.
3.3.3
board
slab

rigid or semi-rigid thermal insulation product (3.2.1) of rectangular shape and cross-

section in which the thickness is uniform and substantially smaller than the other dimensions

Note 1 to entry: They may also be supplied in tapered form.
© ISO 2020 – All rights reserved 7
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SIST EN ISO 9229:2020
ISO 9229:2020(E)
3.3.3.1
curved board

preformed thermal insulation product (3.2.1) of which the longitudinal cross-section is rectangular

and the transverse cross-section has the form of an arc or an annulus of internal diameter normally

exceeding 1,5 m

Note 1 to entry: Such a product is used for the insulation of large pipes, cylindrical ducts and vessels [see segment

(3.3.10)]. Small pipes are usually insulated with pipe sections (3.3.12) [see pipe insulation (3.3.11)].

3.3.3.2
grooved board

product with surface channels of triangular, rectangular or other cross-section

3.3.3.3
sloped board

product with a slope, with one side of the board that is thicker than the another one

3.3.3.4
slotted board

product with deep channels of triangular or rectangular cross-section that may be applied

to a curved surface
Note 1 to entry: See also grooved board (3.3.3.2).
3.3.4
mattress

flexible thermal insulation material (3.1.1), normally faced on one or both sides, or totally enclosed with

fabric, wire netting, expanded metal or a similar covering, attached mechanically to the insulation

batt (3.3.7)
3.3.5
metal mesh blanket

insulation mat (3.3.6) covered by a flexible metal mesh facing (3.5.1) attached on one or both sides

Note 1 to entry: See mattress (3.3.4).
Note 2 to entry: Also known as wired mat.
3.3.6
mat
blanket

flexible fibrous thermal insulation product (3.2.1) supplied rolled or flat, which may be faced or enclosed

3.3.7
batt

portion of a mat (3.3.6) in the form of a rectangular piece generally between 1 m and 3 m in length and

usually supplied flat or folded
3.3.8
moulding
shaped strip of insulation
Note 1 to entry: See also preformed insulation (3.4.4).
3.3.9
roll
product supplied in the form of a wound cylinder
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SIST EN ISO 9229:2020
ISO 9229:2020(E)
3.3.10
segment
lag

rigid or semi-rigid thermal insulation product (3.2.1) for application to large diameter cylindrical or

spherical equipment
3.3.10.1
plain segment

segment (3.3.10) with a rectangular cross-section designed for use on cylindrical vessels of such a

diameter that the lags lie sufficiently close to the surface
3.3.10.2
bevelled segment
plain segment (3.3.10.1) but with one or more edges bevelled
3.3.10.3
radiused and bevelled segment

segment (3.3.10) with curved faces and bevelled edges to fit the surface of a cylindrical vessel

3.3.11
pipe insulation
thermal insulation product (3.2.1) designed to fit around pipes
3.3.12
pipe section

pipe insulation (3.3.11) in the shape of a cylindrical annulus that may be split to facilitate application

3.3.12.1
concentric pipe section
pipe insulation (3.3.11) fabricated by successive deposits of concentric fibres
3.3.12.2
precision v-groove pipe section

pipe insulation (3.3.11) fabricated from a machined board via a precision cutting process, resulting a

parallel fibre orientation with the pipe
Note 1 to entry: Usually shipped flat.
3.3.12.3
cut pipe section

pipe insulation (3.3.11) which is cut from a flat board to a circular form via computer numeric control

(CNC) machine, resulting in irregular perpendicular and parallel fibre orientation around a pipe

3.3.12.4
moulded pipe section
mandrel wound pipe section

pipe insulation (3.3.11) fabricated by wrapping uncured fibres around a mandrel, followed by exposure

to a curing process
3.3.13
tube
product for application on cylindrical objects
3.3.14
insulating jacket

flexible assembly of thermal insulation material (3.1.1) totally enclosed in fabric, film, paper or thin

metal that is designed to fit individual vessel forms
3.3.15
insulating rope
rope composed of mineral fibre (3.1.18) loosely braided with yarn or metal wire
© ISO 2020 – All rights reserved 9
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SIST EN ISO 9229:2020
ISO 9229:2020(E)
3.3.16
laminate

combination of two or more materials that are bonded together during manufacture to produce a single

item (3.7.9) or product
3.3.17
sandwich panel

rigid construction comprised of a thermal insulation material (3.1.1) faced on both sides with a sheet

(3.3.23
...