Faktory ovlivňující biologické napadení fasád panelových domů

Abstract

In connection with the increasing number of facades additionally equipped with contact thermally insulated system the number of cases in which facades are depriciated with microbiological vegetation has risen. There are two main reasons for the insulation: lowering energy costs and new look of the facade. Algae, mould and bacteria can grow on almost every surface, but not all insulated façades are attacked by them. Suitable conditions for growth of organisms on facades are certain ranges of temperature and high moisture level, but also the surface structure, nutrient availability pH, etc. Different organisms have different demands that decides if an organism can grow in a certain environment. At the present time there is no material that can resist microorganisms for long time. The vegetation of microscopic algae, fungi and and blue-green algae on the outer surface of perimetr walls depreciates aesthetical function of facades and can also have a negative impact on the health of population of affected houses.