ISO 29467:2008

Thermal insulating products for building applications - Determination of squareness

ISO 29467:2008 specifies the equipment and procedure for determining the deviation from squareness for length, width and/or thickness of full‑size products. It is applicable to thermal insulating products. The method is normally applicable to products with straight edges. For products of other shape, e.g. profiled edges, the method can be adapted accordingly.

Produits isolants thermiques destinés aux applications du bâtiment — Détermination de l'équerrage

General Information

• Status: Published
• Publication Date: 29-Oct-2008
• ICS: 91.100.60 - Thermal and sound insulating materials
• Technical Committee: ISO/TC 163/SC 1 - Test and measurement methods
• Drafting Committee: ISO/TC 163/SC 1 - Test and measurement methods
• Current Stage: 9093 - International Standard confirmed
• Start Date: 11-Jun-2025
• Completion Date: 13-Dec-2025

Relations

• Amended By: ISO 29467:2008/Amd 1:2014 - Thermal insulating products for building applications - Determination of squareness - Amendment 1
• Effective Date: 11-Dec-2021

Overview

ISO 29467:2008 is an international standard developed by the International Organization for Standardization (ISO) that specifies the equipment and procedures for determining the deviation from squareness in thermal insulating products used in building applications. This standard focuses on measuring the squareness of length, width, and thickness of full-size thermal insulating products, which are critical for ensuring product quality and fit during installation.

The standard primarily applies to products with straight edges but can be adapted for products with profiled or irregular edges. Accuracy in squareness measurement directly affects construction accuracy, energy efficiency, and structural integrity of thermal insulation components.

Key Topics

• Scope and Applicability
  ISO 29467:2008 defines methods suited for thermal insulating products for building use, enabling manufacturers and testers to assess shape precision via squareness deviation measurements.

• Terminology

  • Deviation from squareness: The distance from one limb of a perfect square to the product’s edge at a given distance from the corner, used to evaluate angular precision.

• Testing Principle
  Utilizing a calibrated metal square against the product’s edges, the deviation of the product’s edge from the metal square limb is measured to quantify squareness.

• Required Apparatus

  • Flat surface for specimen placement
  • Metal square with limbs at least 500 mm long and a deviation from squareness ≤ ±0.1 mm
  • Metal rule or tape graduated in millimeters with 0.5 mm reading accuracy

• Test Specimen Requirements

  • Full-size product samples conditioned under standardized temperature (23 ± 5°C) and relative humidity (50 ± 5%) conditions
  • Specific conditions for tropical environments (27°C and 65% RH) are also detailed for regionally relevant testing

• Procedure

  • Laying test specimens on a flat surface
  • Placing the metal square and measuring deviations at corners and along edges for length, width, and thickness
  • Repeating measurements to identify maximum deviation

• Calculations
  Deviations from squareness are calculated in millimeters per meter for length and width, and in millimeters for thickness. Values are rounded according to defined equations to standardize results.

• Reporting Requirements
  Comprehensive test reporting includes product identification, conditioning history, test details, environmental conditions, individual measurement values, maximum deviations, and any notable anomalies such as edge linearity deviations.

Applications

• Quality Control in Manufacturing
  Ensuring thermal insulation panels meet strict shape tolerances for effective thermal performance and seamless installation.

• Building Construction
  Validation of product squareness helps achieve correct alignment and fit of insulating materials in walls, floors, and ceilings, improving energy conservation and structural reliability.

• Research and Product Development
  Facilitates testing of new thermal insulating products to meet international quality and dimensional standards before market release.

• Regulatory Compliance
  Demonstrates conformity with international dimensional and geometric requirements in building insulation products, supporting certification and market acceptance.

Related Standards

ISO 29467:2008 is part of a comprehensive series of standards dedicated to the characterization and testing of thermal insulating products for buildings, including:

• ISO 29465 – Determination of length and width
• ISO 29466 – Determination of thickness
• ISO 29468 – Determination of flatness
• ISO 29469 – Determination of compression behaviour
• ISO 29470 – Determination of apparent density
• ISO 29471 – Determination of dimensional stability under lab conditions
• ISO 29472 – Determination of dimensional stability under specified temperature and humidity
• ISO 29764 to ISO 29805 – Various mechanical and physical properties of insulation materials

These interrelated standards support a uniform approach to testing, ensuring thermal insulation products consistently meet performance and dimensional requirements on a global scale.

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Keywords: ISO 29467, thermal insulating products, building applications, squareness determination, deviation from squareness, insulation quality control, dimensional testing, thermal insulation standards, construction insulation, product conformity

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 29467
First edition
2008-11-01
Thermal insulating products for building
applications — Determination of
squareness
Produits isolants thermiques destinés aux applications du bâtiment —
Détermination de l'équerrage
Reference number
©
ISO 2008
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ii © ISO 2008 – All rights reserved

Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Terms and definitions. 1
3 Principle. 2
4 Apparatus . 2
5 Test specimens . 3
6 Procedure . 3
7 Calculation and expression of results. 4
8 Accuracy of measurement. 5
9 Test report . 5

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 29467 was prepared by Technical Committee ISO/TC 163, Thermal performance and energy use in the
built environment, Subcommittee SC 1, Test and measurement methods.
iv © ISO 2008 – All rights reserved

Introduction
This International Standard comprises the original EN 824:1994 prepared by Technical Committee
CEN/TC 88, Thermal insulating materials and products, which has been amended by ISO/TC 163/SC 1 with
reference to conditioning and testing conditions in tropical countries.
This International Standard is one of a series of documents specifying test methods, based on existing
European Standards, that are being adopted by ISO. This “package” of standards includes the following group
of interrelated documents.
International Standard
Respective EN
standard
ISO 29465, Thermal insulating products for building applications — Determination of length
EN 822
and width
ISO 29466, Thermal insulating products for building applications — Determination of
EN 823
thickness
ISO 29467, Thermal insulating products for building applications — Determination of
EN 824
squareness
ISO 29468, Thermal insulating products for building applications — Determination of flatness
EN 825
ISO 29469, Thermal insulating products for building applications — Determination of
EN 826
compression behaviour
ISO 29470, Thermal insulating products for building applications — Determination of the
EN 1602
apparent density
ISO 29471, Thermal insulating products for building applications — Determination of
EN 1603
dimensional stability under constant normal laboratory conditions (23°C/50 % relative
humidity)
ISO 29472, Thermal insulating products for building applications — Determination of
EN 1604
dimensional stability under specified temperature and humidity conditions
ISO 29764, Thermal insulating products for building applications — Determination of
EN 1605
deformation under specified compressive load and temperature conditions
ISO 29765, Thermal insulating products for building applications — Determination of tensile
EN 1607
strength perpendicular to faces
ISO 29766, Thermal insulating products for building applications — Determination of tensile
EN 1608
strength parallel to faces
ISO 29767, Thermal insulating products for building applications — Determination of short-
EN 1609
term water absorption by partial immersion
ISO 29768, Thermal insulating products for building applications — Determination of linear
EN 12085
dimensions of test specimens
ISO 29769, Thermal insulating products for building applications — Determination of
EN 12430
behaviour under point load
ISO 29770, Thermal insulating products for building applications — Determination of
EN 12431
thickness for floating-floor insulating products
ISO 29771, Thermal insulating materials for building applications — Determination of organic
EN 13820
content
ISO 29803, Thermal insulation products for building applications — Determination of the
EN 13497
resistance to impact of external thermal insulation com
...