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- Thermal protection and modernisation of existing buildings
- s assumed that a majority of retrofits is carried out partially, often single measures only, and buildi... c planning or quality assurance is rarely carried out in such instances. In many countries, single meas... nce of the investor or building owner and carried out by a contractor with a more or less moderate know... asure of step-by-step retrofits should be carried out according to high quality standards and a sound r