Thermal insulation for building applications — Guidelines for selecting properties

ISO 9774:2004 gives guidelines to the standards writer in selecting thermal-insulation material properties for standards used in building applications. These guidelines are not intended to prove the suitability of any particular product for any given application. The standard applies only to prefabricated thermal-insulation products, i.e. manufactured mats and boards including any facings or coverings which may be present, although the basic characteristics may also be applied to other insulation products, e.g. in situ in systems or components, where appropriate. The standard covers only thermal-insulation products for use in buildings within normal climatic conditions. It does not cover insulation products for building services, e.g. plumbing and heating, nor insulation products for industrial use. Acoustic properties are not included in the properties given in the standard, although these may be additionally required for some fields of application.

Produits isolants thermiques pour le bâtiment — Lignes directrices pour le choix des charactéristiques

General Information

Status
Published
Publication Date
26-Sep-2004
Current Stage
9093 - International Standard confirmed
Start Date
20-Sep-2007
Completion Date
28-Nov-2022
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INTERNATIONAL ISO
STANDARD 9774
First edition
2004-10-01
Thermal insulation for building
applications — Guidelines for selecting
properties
Produits isolants thermiques pour le bâtiment — Lignes directrices pour
le choix des charactéristiques
Reference number
ISO 9774:2004(E)
ISO 2004
---------------------- Page: 1 ----------------------
ISO 9774:2004(E)
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© ISO 2004

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ii © ISO 2004 – All rights reserved
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ISO 9774:2004(E)
Contents Page

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

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

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

3 Applications of thermal-insulation products in buildings................................................................ 1

4 Performance characteristics of products according to their application ....................................... 2

5 Application categories.......................................................................................................................... 2

Bibliography ..................................................................................................................................................... 12

© ISO 2004 – All rights reserved iii
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ISO 9774:2004(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.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

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.

ISO 9774 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 10, Cellular plastics.

It cancels and replaces ISO/TR 9774:1990, which has been technically revised.
iv © ISO 2004 – All rights reserved
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INTERNATIONAL STANDARD ISO 9774:2004(E)
Thermal insulation for building applications — Guidelines for
selecting properties
1 Scope

This International Standard gives guidelines to the standards writer in selecting thermal-insulation material

properties for standards used in building applications.

These guidelines are not intended to prove the suitability of any particular product for any given application.

When standards are established or existing specifications are revised on the basis of these guidelines, the

performance characteristics in these guidelines should be translated into product requirements (specified

values) in the International Standard for a product or application, together with appropriate test methods,

which must be fulfilled at the time of delivery, in order to ensure that the product provides the performance

requirements in service. This relationship between specified values for the product and the service

performance characteristic of the product in use can be different for different insulating products, depending

on the characteristic of the material (e.g. ageing or time-dependent behaviour).

This International Standard applies only to prefabricated thermal-insulation products, i.e. manufactured mats

and boards including any facings or coverings which may be present, although the basic characteristics may

also be applied to other insulation products, e.g. in situ in systems or components, where appropriate.

The International Standard covers only thermal-insulation products for use in buildings within normal climatic

conditions. It does not cover insulation products for building services, e.g. plumbing and heating, nor insulation

products for industrial use.

Acoustic properties are not included in the properties given in this International Standard, although these may

be additionally required for some fields of application.
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.
ISO/TR 9165, Practical thermal properties of building materials and products
3 Applications of thermal-insulation products in buildings

A review of the most common applications of thermal-insulation products in different roof, wall, ceiling and

foundation structures is given in Table 1. The applications are illustrated in more detail in Figure 1.

The purpose of Figure 1 is only to illustrate the applications for the various insulation products and to assist in

relating the performance characteristics of the products to their application. The figure will also assist in

determining requirements for other applications not listed.

The sketches are for illustration only and are not intended as construction drawings: for example, water

vapour barriers and air infiltration barriers which may be necessary are not shown. Waterproofings in the roof

© ISO 2004 – All rights reserved 1
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ISO 9774:2004(E)

or foundation area are only shown to clarify the position of the insulation layer — in the area affected by

precipitation or ground water or in the area protected against the penetration of water.

4 Performance characteristics of products according to their application

Table 2 lists those properties — for different applications — which need to be considered when preparing

standards and specifications for different products. The performance characteristics necessary for these

properties to ensure serviceable and durable thermal insulation are explained and some values are suggested

in Table 4.

Derived from Table 2, Table 3 gives specific properties which may be necessary only for certain applications.

For additional applications in building, not shown in Figure 1, the properties of the insulation products may be

determined using the information in Tables 2, 3 and 4.

Insulation products used in two or more applications as indicated in Figure 1 shall have all relevant properties

for all the intended applications.

For certain constructions, the knowledge of the water vapour transmission rate and the permeability to air is

necessary. In such cases, the values for these shall be included in the product specification.

For some applications, additional performance criteria may be relevant, e.g. dimensional stability when in

contact with solvents. In such cases, the product specification shall include these additional properties.

5 Application categories

For simplicity, the various applications for insulating products shown in Figure 1 may be grouped into

categories having common performance requirements. It is then the task of the insulation material standards

or specifications to define these categories and the applications which are covered by the categories.

2 © ISO 2004 – All rights reserved
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ISO 9774:2004(E)
For key, see next page.
NOTE The numbers in parentheses are for use with Tables 1, 2 and 3.
© ISO 2004 – All rights reserved 3
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ISO 9774:2004(E)
Key
1 flat roof
2 pitched roof
insulating product
waterproofing layer
timber or metallic studs, concrete or rafters
masonry or concrete
rendering
concrete
gravel
ground

Figure 1 — Examples of the most common applications of thermal-insulation products in buildings

4 © ISO 2004 – All rights reserved
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ISO 9774:2004(E)

Table 1 — Examples of the most common applications of thermal-insulation products in buildings

(for additional information, see sketches in Figure 1)
Sketch
Application
No.
Unloaded insulation between rafters, fully supported 1
Insulation separating rafters and outer covering 2
Pitched
roof
Insulation separating supporting construction and outer covering 3
Insulation beneath rafters 4
Insulation between rafters or beams 5
Roof

Inverted, insulation above roofing membrane including roof gardens and parking decks 6

Flat On steel deck, insulation beneath roofing membrane 7
roof

Accessible to light or heavy traffic or loads from roof garden (soil layer, plants, etc.) and parking decks 8

(concrete pavers or slabs), insulation beneath roofing membrane
Accessible only to maintenance personal, insulation beneath roofing membrane 9
Masonry or concrete wall, external insulation covered by rendering 10

Timber stud construction, outside insulation and rendering directly supported by the studs 11

Timber stud construction, insulation at the internal side with rendering 12

Masonry or concrete wall, fully supported internal insulation supporting light protective internal facing (e.g. 13

gypsum board)

Masonry or concrete wall, internal insulation supporting light protecting facing, partly supported by studs 14

Masonry or concrete wall, internal insulation with heavy self-supported protective internal facing (e.g. tiles 15

at roomside)
Wall

Timber or metal stud construction with boards covering, insulation between the studs 16

Cavity wall construction, insulation between the leaves, cavity ventilated 17

Cavity wall construction, cavity fully filled with insulation, outer leave not watertight 18

Timber or metal stud construction with boards covering, insulation supported by boards; or masonry or 19

concrete wall, supporting the insulation with ventilated exterior covering

Wall under ground, external insulation behind waterproof membrane with mechanical protection 20

Wall under ground, external insulation with direct contact to the ground 21
Cellar or crawlspace hall, internal insulation with or without covering 22
Insulation over the supporting construction or between the beams 23
Ceiling/floor Insulation under load distributing flooring, fully supported 24
Insulation under the construction 25
Concrete, insulation under the slab with direct contact to the ground 26

Concrete, insulation supported by the slab, above waterproof membrane, beneath load distributing flooring 27

Foundation
Concrete, insulation under the slab above waterproof membrane 28
Frost insulation in or against the ground 29
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ISO 9774:2004(E)

Table 2 — List of relevant properties to be considered according to the application of insulating

material in buildings (0 indicates specification writer should consider this property)

Roof Wall
Application of insulation with reference to
Figure 1 sketch No.
1 2 3 4 5 6 7 8 9 10 11 12 13
...

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