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Thermal bridge calculation

Thermal bridges are an important instrument for identifying in more detail the heat losses from the building envelope. In highly efficient buildings such as Passive Houses, the influence of these losses has to be minimised. In ideal cases this is referred to as thermal bridge free connections or thermal bridge free design. Besides the heat losses, surface temperatures can also be determined with the aid of heat flow simulations, which allow conclusions to be drawn regarding thermal comfort, moisture development and the risk of mould growth.

Isothermenbild eines Balkonanschlusses


Calculating thermal bridges

Area Examples Norms
Opaque building component connections Roof connections, ceiling/floor connections, wall corners… DIN EN ISO 10211
Transparent building components Windows, mullion-transom constructions … DIN EN ISO 10077
Ground-contact components Surface foundations, heated and unheated basements … DIN EN ISO 13370
DIN EN ISO 10211
Punctiform thermal bridges Penetrations by supports, anchors, façade dowels, … DIN EN ISO 10211

The procedures for calculating thermal bridges differ for the various areas of the building envelope. The different procedures are discussed below.

Thermal bridges in building components in contact with the ground

Detailed examples

basics/building_physics_-_basics/thermal_bridges/tbcalculation.txt · Last modified: 2018/01/11 11:47 by