Microbes need a comfortable living environment to grow and multiply quickly.
The combination of high humidity conditions, temperature and exposure time are the most important factors contributing to the development of biological problems related to mould and algae growth in buildings.
Microbes in buildings
Microbes enter buildings via surfaces such as furniture and on its inhabitants. 95% of micro organisms can only multiply when they are in contact with a surface. To reproduce they need moisture and nutrients. Unwanted microbial growth in buildings is often caused by following conditions;
The spread of bacteria
Although most microbes only grow on surfaces, they can form spores and become airborne. The transmission of the spores will go into the Heating, Ventilating and Air Conditioning (HVAC systems) and elevator shafts throughout the building. Once the environment is more suitable for growth, spores can germinate and multiply on surfaces and spread quickly all over the building.