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In connection with the increasing number of facades additionally equipped with contact thermally insulated system the number of cases in which facades are depreciated with microbiological vegetation has raised. The vegetation of microscopic algae, fungi and blue-green algae on the outer surface of perimeter walls depreciates aesthetical function of facades and can also have a negative impact on the health of population of affected houses. Keywords-component; microbiological vegetation; facades; insulation; heat transfer formatting I. GENERAL INTRODUCTION In the 80s and 90s of the 20th century technical imperfection started to occur especially at high-rise blocks. Besides malfunction connected with the age of objects, such as gradual exposure of reinforcing bar of perimeter panels, leaking into flat roofs and the like, the professional public started to realize b ig imperfection in the sphere of thermal technology. Perimeter walls together with roof construction form perimeter covering, which protects the interior of a building from effects of the outer environment. In connection with legislat ion changes in the field of thermal insulation of buildings for the purpose of decreasing the consumption of heat on heating and by that protection of nature, demands on thermal and technological characteristics of building cover have been tightened up. [1] For this purpose, the Czech Republic issued a set of rules. The main requirement concerning building cover including perimeter walls is the achievement of the min imum recommended warm penetration coefficient. The recommended requirements on the value of warm penetration coefficient are reached especially by additional thermal insulation of facades. As far as insulating material is concerned, especially polystyrene boards or boards from mineral wool are used. These boards together with other components (anchoring part, reinforcing part, and plastering) form the so called ETICS. After application of this system on facade, composite contact thermally insulated system is formed. The advantage of ETICS is besides the decrease of warm loss via the thermally insulated wall also the decrease or total elimination of condensation inside the construction, protection of perimeter construction from weather influences, improvement of aesthetical aspect of wall and overall increase of wall lifespan. Et ics also showed its imperfection in the course of time. The causes of repeated disorders related especially to bad construction were solved by professionals. During the last years a new problem has occurred and that is devaluation of facade surface with space microbio logical vegetation (Fig.1). In a simplified way it might be claimed that insulation prevents penetrating of the warm from the interior to the outer facade surface, which is the base for the formation of suitable life conditions for the growth of microscopical fungi, a lgae and blue-green algae. Figure 1. Facade of a building with vegetation of microscopic fungi, algae and blue-green algae 220 Advances in Engineering Research (AER), volume 72 2016 International Conference on Architectural Engineering and Civil Engineering (AECE-16)

Development of Microbiological Vegetation on Facades of Thermally Insulated Houses Repairing a One Column Paper with MS-word for Windows