BS EN ISO 6946:2007 PDF

Scope: This International Standard provides the method of calculation of the thermal resistance and thermal transmittance of building components and building elements, excluding doors, windows and other glazed units, curtain walling, components which involve heat transfer to the ground, and components through which air is designed to permeate. The calculation method is based on the appropriate design thermal conductivities or design thermal resistances of the materials and products for the application concerned. The method applies to components and elements consisting of thermally homogeneous layers (which can include air layers). This International Standard also provides an approximate method that can be used for elements containing inhomogeneous layers, including the effect of metal fasteners, by means of a correction term given in Annex D. Other cases where insulation is bridged by metal are outside the scope of this International Standard.

BS EN ISO 6946:2007 Referenced Document

ISO 10456 Building materials and products - Hygrothermal properties - Tabulated design values and procedures for determining declared and design thermal values; Technical Corrigendum 1*， 2009-12-01 Update
ISO 13789 Thermal performance of buildings - Transmission and ventilation heat transfer coefficients - Calculation method*， 2017-06-01 Update
ISO 7345 Thermal performance of buildings and building components — Physical quantities and definitions*， 2018-03-08 Update

2022 BS EN ISO 6946:2017 Building components and building elements. Thermal resistance and thermal transmittance. Calculation methods
2008 BS EN ISO 6946:2008 Building components and building elements. Thermal resistance and thermal transmittance. Calculation method
2008 BS EN ISO 6946:2007 Building components and building elements - Thermal resistance and thermal transmittance - Calculation method
1997 BS EN ISO 6946:1997 Building components and building elements - Thermal resistance and thermal transmittance - Calculation method