EN ISO 16536:2019

Thermal insulating products for building applications - Determination of long-term water absorption by diffusion (ISO 16536:2019)

This document specifies the equipment and procedures for determining the long-term water absorption of test specimens by diffusion. It is applicable to thermal insulating products. It is intended to simulate the water absorption of products subjected to high relative humidities, approximating to 100 %, on both sides and subjected to a water vapour pressure gradient for a long period of time e.g. inverted roof or unprotected ground insulation.
The test is not applicable for all types of thermal insulating products. The relevant product standard should state for which of its products, if any, this test is applicable.

Wärmedämmstoffe für das Bauwesen - Bestimmung der Wasseraufnahme durch Diffusion (ISO 16536:2019)

Dieses Dokument legt Prüfeinrichtungen und Verfahren zur Bestimmung der langzeitigen Wasseraufnahme von Probekörpern durch Diffusion fest. Es gilt für Wärmedämmstoffe. Das Prüfverfahren simuliert die Wasseraufnahme von Produkten, die auf beiden Seiten einer hohen relativen Luftfeuchte bis 100 % sowie über eine lange Zeit einer Wasserdampfteildruckdifferenz ausgesetzt werden, wie z. B. im „Umkehrdach“ oder bei der ungeschützten Wärmedämmung zum Erdreich.
Dieses Prüfverfahren ist nicht für alle Typen von Wärmedämmstoffen anwendbar. Daher sollte in der ent-sprechenden Produktnorm angegeben werden, für welche der in ihr beschriebenen Produkte dieses Prüf-verfahren anwendbar ist.
ANMERKUNG   Für „ungeschützte Wärmedämmung zum Erdreich“ könnte die Temperatur von 50 °C durch eine niedrigere Temperatur ersetzt werden, wenn mehr Daten zur Verfügung stehen.

Produits isolants thermiques destinés aux applications du bâtiment - Détermination de l'absorption d'eau à long terme par diffusion (ISO 16536:2019)

Le présent document spécifie l'équipement et les modes opératoires permettant de déterminer l'absorption d'eau à long terme des éprouvettes par diffusion. Il s'applique aux produits isolants thermiques. Il est destiné à simuler l'absorption d'eau de produits soumis à des taux d'humidité relative élevés, proches de 100 % sur chacune des faces, ainsi qu'à un gradient de pression de vapeur d'eau pendant une longue durée, par exemple une toiture inversée ou une isolation au contact direct de la terre.
L'essai ne s'applique pas à tous les types de produits isolants thermiques. Il convient que la norme produit pertinente stipule à quels produits s'applique, le cas échéant, le présent essai.

Toplotnoizolacijski proizvodi za uporabo v gradbeništvu - Ugotavljanje dolgotrajnega vpijanja vode z difuzijo (ISO 16536:2019)

Ta mednarodni standard določa opremo in postopke za ugotavljanje dolgotrajnega vpijanja vode preskušancev z difuzijo. Uporablja se za toplotnoizolacijske proizvode. Namenjen je simulaciji vpijanja vode pri proizvodih, ki so izpostavljeni visoki vlagi, približno 100 %, na obeh straneh in dolgotrajnemu gradientu parnega tlaka vode, npr. pri invertnih strehah in nezaščiteni talni izolaciji.
Preskus ni priporočljiv za vse vrste toplotnoizolacijskih proizvodov. Standard za proizvod mora navajati, za katere proizvode je preskus uporaben (če obstajajo).
OPOMBA: Pri nezaščiteni izolaciji tal je temperaturo 50 °C mogoče zamenjati z nižjo temperaturo, kadar je na voljo več podatkov.

General Information

• Status: Published
• Publication Date: 23-Jul-2019
• Withdrawal Date: 30-Jan-2020
• ICS: 91.100.60 - Thermal and sound insulating materials
• Technical Committee: CEN/TC 88 - Thermal insulating materials and products
• Drafting Committee: CEN/TC 88/WG 1 - Common general test methods
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 24-Jul-2019
• Due Date: 15-Sep-2019
• Completion Date: 24-Jul-2019
• 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 REV - Amendment to mandate to CEN and CENELEC concerning the execution of standardisation work for harmonised standards on thermal insulation products (m/103)
• Ref Project: SIST EN ISO 16536:2019 - Thermal insulating products for building applications - Determination of long term water absorption by diffusion (ISO 16536:2019)

Relations

• Replaces: EN 12088:2013 - Thermal insulating products for building applications - Determination of long term water absorption by diffusion
• Effective Date: 29-Mar-2017

Overview

EN ISO 16536:2019 - Thermal insulating products for building applications: Determination of long‑term water absorption by diffusion - is a CEN-endorsed ISO test method for measuring how much water thermal insulation absorbs when exposed to high relative humidity and a vapour pressure gradient over a prolonged period. The procedure simulates situations such as inverted roofs or unprotected ground insulation where both faces are exposed to near‑saturated vapour conditions. Note: the test is not applicable to all insulation types; applicability is determined by the relevant product standard.

Key topics and technical requirements

• Scope and principle: Measures mass gain due to water vapour diffusion over a 28‑day period under controlled temperature and vapour pressure gradient.
• Apparatus essentials:
  • Balance accurate to 0.1 g.
  • Corrosion‑resistant container/frame and sealing (sealing width ≤ 10 mm).
  • Heating/thermostat to maintain water at (50 ± 1) °C.
  • Insulated cooling plate at (1 ± 0.5) °C.
  • Tap water at test temperature.
• Test specimens:
  • Thickness = original product thickness; square sides (500 ± 1) mm where practicable (smaller if product size limits).
  • At least two specimens; cut to avoid original edges and preserve facings/coatings.
  • Conditioning: normally (23 ± 5) °C (minimum 6 h); for dispute use (23 ± 2) °C and (50 ± 5) % RH. Tropical option: (27 ± 2) °C, (65 ± 5) % RH.
• Procedure:
  • Measure initial mass (m0), expose specimen for 28 days with water at 50 °C below and cooling plate above, weigh and turn every 7 days, then determine final mass (mD).
• Results and calculation:
  • Report long‑term water absorption as mass per area (kg/m²) or volume percent using the standard formulas. Round to 0.01 kg/m² or 0.1 vol‑% as specified.
• Reporting: Must include reference to EN ISO 16536:2019, product identification, pre‑test history, conditioning, deviations, dates, all individual values and mean.

Applications and users

• Who uses it:
  • Test laboratories performing durability and moisture testing.
  • Insulation manufacturers - product development, quality control, and compliance.
  • Specifiers, architects and façade/roofing engineers assessing suitability for inverted roofs, ground insulation and other high‑humidity exposures.
  • Regulatory bodies and product certification schemes that reference product standards.
• Practical value:
  • Predicts long‑term moisture uptake under vapour diffusion conditions.
  • Supports material selection for high‑moisture building applications.
  • Provides objective data for product standards and performance claims.

Related standards

• ISO 29768 (referenced) - determination of linear dimensions of test specimens.
• EN ISO 16536:2019 supersedes EN 12088:2013; consult the relevant product standard to confirm applicability for specific insulation types.

Keywords: EN ISO 16536:2019, long‑term water absorption, thermal insulating products, diffusion test, inverted roof, ground insulation, water vapour diffusion test.

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2019
Nadomešča:
SIST EN 12088:2013
Toplotnoizolacijski proizvodi za uporabo v gradbeništvu - Ugotavljanje
dolgotrajnega vpijanja vode z difuzijo (ISO 16536:2019)
Thermal insulating products for building applications - Determination of long term water
absorption by diffusion (ISO 16536:2019)
Wärmedämmstoffe für das Bauwesen - Bestimmung der Wasseraufnahme durch
Diffusion (ISO 16536:2019)
Produits isolants thermiques destinés aux applications du bâtiment - Détermination de
l'absorption d'eau à long terme par diffusion (ISO 16536:2019)
Ta slovenski standard je istoveten z: EN ISO 16536:2019
ICS:
91.100.60 Materiali za toplotno in Thermal and sound insulating
zvočno izolacijo materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 16536
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2019
EUROPÄISCHE NORM
ICS 91.100.60 Supersedes EN 12088:2013
English Version
Thermal insulating products for building applications -
Determination of long-term water absorption by diffusion
(ISO 16536:2019)
Produits isolants thermiques destinés aux applications Wärmedämmstoffe für das Bauwesen - Bestimmung
du bâtiment - Détermination de l'absorption d'eau à der Wasseraufnahme durch Diffusion (ISO
long terme par diffusion (ISO 16536:2019) 16536:2019)
This European Standard was approved by CEN on 21 June 2019.

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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16536:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 16536:2019) 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 January 2020, and conflicting national standards shall
be withdrawn at the latest by January 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 12088:2013.
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 16536:2019 has been approved by CEN as EN ISO 16536:2019 without any modification.

INTERNATIONAL ISO
STANDARD 16536
Second edition
2019-06
Thermal insulating products
for building applications —
Determination of long-term water
absorption by diffusion
Produits isolants thermiques destinés aux applications du bâtiment —
Détermination de l'absorption d'eau à long terme par diffusion
Reference number
ISO 16536:2019(E)
©
ISO 2019
ISO 16536:2019(E)
© ISO 2019
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
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Published in Switzerland
ii © ISO 2019 – All rights reserved

ISO 16536:2019(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus . 1
6 Test specimens. 2
6.1 Dimensions of test specimens . 2
6.2 Number of test specimens . 3
6.3 Preparation of test specimens . 3
6.4 Conditioning of test specimens . 3
7 Test procedure . 3
8 Calculation and expression of results . 3
9 Accuracy of measurement . 4
10 Test report . 4
ISO 16536:2019(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
...