Grundsätze und Lösungen zur Wärmebrückenreduktion im Metallleichtbau

Principles and solutions of thermal bridge reduction in light metal construction

The requirements for energy-saving constructions for industrial and commercial buildings have been tightened by the introduction of the Energy Saving Regulation (EnEV) 2009. A major contribution to energy saving can be made by minimisation of transmission heat transfer. Analysing buildings with lightweight metal envelops leads to the conclusion that increasing the thickness of the heat insulation alone does not lead to the desired results as additionally thermal bridge effects have to be considered and their effects on the heat transmission have to be reduced. In addition to its importance to saving energy a thermotechnically optimised detail design is also essential for realising moisture proof (prevention of condensation water and mould growth) and avoiding damages. The thermal bridge atlas for metal sandwich construction published by the German industry association for lightweight metal construction systems (IFBS) is an important tool for the careful detail design.