prEN ISO 18393-1

Thermal insulation products - Determination of ageing by settlement - Part 1: Blown loose-fill insulation for ventilated attics, humidity and temperature cycling

ISO 18393-1:2012 specifies a test method for the determination of settlement of blown loose-fill insulation applied horizontally in ventilated attics.

Wärmedämmprodukte ¿ Bestimmung der Alterung durch Setzung ¿ Teil 1: Eingeblasene lose Wärmedämmstoffe für belüftete Dachgeschosse, zyklische Luftfeuchte- und Temperaturbeanspruchungen

Produits isolants thermiques - Détermination du tassement après vieillissement - Partie 1: Isolant en vrac soufflé pour combles ventilés après simulation de cycles de température et d’humidité (ISO/DIS 18393-1:2022)

L'ISO 18393-1 :2012 spécifie une méthode d'essai pour déterminer le tassement des fibres en vrac soufflées, en pose horizontale dans les combles ventilés.

Toplotnoizolacijski proizvodi - Določanje staranja s posedanjem - 1. del: Vpihana nevezana izolacija za prezračevana podstrešja, ki simulira nihanje vlažnosti in temperature (ISO/DIS 18393-1:2022)

General Information

• Status: Not Published
• Publication Date: 08-Jul-2024
• ICS: 91.120.10 - Thermal insulation of buildings
• Technical Committee: CEN/TC 88 - Thermal insulating materials and products
• Drafting Committee: CEN/TC 88/WG 1 - Common general test methods
• Current Stage: 3098 - Decision to reject - Consensus building
• Start Date: 04-Jun-2021
• Completion Date: 14-Apr-2025
• Ref Project: oSIST prEN ISO 18393-1:2022 - Thermal insulation products - Determination of ageing by settlement - Part 1: Blown loose fill insulation for ventilated attics simulating humidity and temperature cycling (ISO/DIS 18393-1:2022)

Overview

prEN ISO 18393-1 (CEN / ISO/DIS 18393-1:2022) specifies a laboratory test method to determine ageing by settlement of blown loose‑fill insulation applied horizontally in ventilated attics. The method simulates the effects of cyclic humidity and temperature exposure to measure changes in installed thickness and the resulting impact on thermal performance.

Key elements of the method include controlled specimen preparation, climate cycling, repeated thickness measurement and expression of settlement as a percentage of the initial installed thickness.

Key Topics

• Scope and purpose: Measures reduction in installed thickness (settlement) of blown loose‑fill insulation in ventilated lofts/attics under simulated humidity and temperature cycles.
• Principle: Blow insulation into a specimen box, condition and expose it to defined humidity/temperature cycles while monitoring thickness at nine fixed positions; calculate mean settlement.
• Specimen container: Typical box internal dimensions given as 600 mm × 600 mm × 300 mm (height). Higher boxes may be used for greater thicknesses.
• Climate chamber: Must provide uniform control across specimens in the range (5 ± 1) °C to (60 ± 1) °C and (50 ± 5) % RH to (85 ± 5) % RH.
• Cycling protocol: Four cycles, each with two periods of 14 days: a cooler, high‑humidity period at (23 ± 1) °C and (85 ± 5) % RH, followed by a hot, low‑humidity period at (50 ± 2) °C and (15 ± 5) % RH. Thickness readings are taken at fixed intervals and at least at the end of each period.
• Measurements and calculations: Thickness measured to nearest millimetre at nine positions (EN ISO 29466 principles) with a 20 Pa load; settlement expressed as percentage rounded to nearest unit. Test reports include initial/final mean values and settlement progression.

Applications

This standardized test method is intended to support:

• Product performance assessment and comparative evaluation of blown loose‑fill insulation products.
• Durability and ageing evaluations for specification and selection in building projects involving ventilated attics.
• Manufacturer quality control and documentation to demonstrate compliance with product standards and regulatory requirements.
• Laboratory test reports that inform installers, specifiers and regulators about likely in-service changes in thickness and thermal performance.

Practical benefits include reproducible measurement of settlement, clearer guidance on installed density and conditioning, and a defined report structure to support decision making.

Related Standards

• EN ISO 18393 (series) - Determination of ageing by settlement (parts 1–4)
• EN ISO 12570/A1 - Determination of moisture content by drying at elevated temperature (conditioning)
• ISO 29466 - Determination of thickness for thermal insulating products
• ISO 9076‑2 and ISO 29470 cited for installation and density considerations

For laboratories and product developers, prEN ISO 18393-1 provides a repeatable method to quantify settlement under realistic humidity and temperature cycling relevant to ventilated attic applications.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2022
Toplotnoizolacijski proizvodi - Določanje staranja s posedanjem - 1. del: Vpihana
nevezana izolacija za prezračevana podstrešja, ki simulira nihanje vlažnosti in
temperature (ISO/DIS 18393-1:2022)
Thermal insulation products - Determination of ageing by settlement - Part 1: Blown
loose fill insulation for ventilated attics simulating humidity and temperature cycling
(ISO/DIS 18393-1:2022)
Wärmedämmprodukte - Bestimmung der Alterung durch Setzung - Teil 1: Eingeblasene
lose Wärmedämmstoffe für belüftete Dachgeschosse, zyklische Luftfeuchte- und
Temperaturbeanspruchungen (ISO/DIS 18393‑1:2022)
Produits isolants thermiques - Détermination du tassement après vieillissement - Partie
1: Isolant en vrac soufflé pour combles ventilés après simulation de cycles de
température et d’humidité (ISO/DIS 18393-1:2022)
Ta slovenski standard je istoveten z: prEN ISO 18393-1
ICS:
91.120.10 Toplotna izolacija stavb Thermal insulation of
buildings
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT INTERNATIONAL STANDARD
ISO/DIS 18393-1
ISO/TC 163/SC 1 Secretariat: DIN
Voting begins on: Voting terminates on:
2022-06-09 2022-09-01
Thermal insulation products — Determination of ageing by
settlement —
Part 1:
Blown loose fill insulation for ventilated attics simulating
humidity and temperature cycling
ICS: 91.120.10; 91.120.10
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 18393-1:2022(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2022

ISO/DIS 18393-1:2022(E)
© ISO 2022
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
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Published in Switzerland
ii
ISO/DIS 18393-1:2022(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Test equipment .2
5.1 Specimen container . 2
5.2 Climate chamber . 2
6 Test specimens . 2
6.1 Preparations of test specimens . 2
6.2 Number of test specimens . 2
6.3 Conditioning of test specimens . 2
7 Test procedure .3
8 Calculations and expression of results . 3
9 Accuracy of measurement.4
10 Test report . 4
Bibliography . 5
iii
ISO/DIS 18393-1:2022(E)
Foreword
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bodies (ISO member bodies). The work of preparing International Standards is normally carried out
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electrotechnical standardization.
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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.
EN ISO 18393-1 was prepared by Technical Committee ISO/TC 163, Thermal performance and energy
use in the built environment, Subcommittee SC 1, Test and measurement methods.
EN ISO 18393 consists of the following parts, under the general title Thermal insulation products —
Determination of ageing by settlement:
Part 1: Blown loose-fill insulation for ventilated attics simulating humidity and temperature cycling
Part 2: Blown loose fill and injected insulation for cavity walls and timber and steel framed walls,
simulating vibration
Part 3: Blown or injected insulation for closed cavities, simulating humidity and temperature cycling
Part 4: Blown loose-fill insulation for ventilated attics and ceilings simulating vibration
iv
DRAFT INTERNATIONAL STANDARD ISO/DIS 18393-1:2022(E)
Thermal insulation products — Determination of agei
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