EN 12939:2000

Thermal performance of building materials and products - Determination of thermal resistance by means of guarded hot plate and heat flow meter methods - Thick products of high and medium thermal resistance

Publication date:   Dec 22, 2003

General information

90.92 Standard to be revised   Oct 19, 2020

CEN

CEN/TC 89 Thermal performance of buildings and building components

European Norm

91.100.60   Thermal and sound insulating materials

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Scope

This standard gives the procedures to determine the thermal resistance of products the thicknesses of which exceed the maximum thickness for guarded hot plate or heat flow meter apparatus. In any case most of the procedures described in this standard require apparatus that allows tests on specimens up to 100 mm thick. This standard gives guidelines to assess the relevance of the thickness effect, i.e. to establish whether the thermal resistance of a thick product can or cannot be calculated as the sum of the thermal resistances of slices cut from the product, these guidelines complement the indications given in ISO 8302:1991 on the guarded hot plate apparatus.This standard describes testing conditions which prevent the onset of convection. which could take place in some products under the considered temperature differences and thicknesses.

Related legislation

Legislation related to this standard

89/106/EEC

Construction products

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

Life cycle

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PUBLISHED
EN 12939:2000
90.92 Standard to be revised
Oct 19, 2020