Incidence of Microorganisms on Insulated Facades in the Selected Location (Ostrava-Poruba)

Abstract

Incidence of microorganisms on thermal-insulated facades in the selected location (Ostrava-Poruba). Incidence of microorganisms on facades is more and more common. It benefits mostly from façade´s thermal insulation. This problem is not only esthetical. Incidence of microscopic fungi increased due to environmental changes. Every person is breathing spores (reproductive particles of mould) unknowingly. There is evidence that spores are closely related to respiratory illnesses. Objects that are vulnerable to microorganisms should be managed in a way, where there is no risk of harm to us or people around us.

Historical Development of Thermal Protection of Prefab Residential Housing and Its Future, an Example of the Czech Republic

“…Measurements in this study [49,50] showed that the CO 2 concentration at night after 12.00 a.m. exceeded 2300 ppm (room occupied by 2 people was not ventilated, microventilation was not used at the windows, the house was insulated with an ETICS and no other measures were taken, such as central system ventilation, air conditioning, etc.) [52].…”

“…grid and damage to the lamellas; (b) insufficient anchoring of insulating mineral wool; (c) example of post-thermally insulated external wall; (d) example of an additionally thermally insulated building only up to the 6th aboveground floor due to the quality of the material, the use of which at higher floors would not comply with fire safety regulations (Photo source: Author's archive [29,30]).…”

“…Figure 2. Prefab panel construction system known as T06B-OS, the plan is highly articulated, creating considerably cooled surfaces in the peripheral circumferential shell (Photo source: Author's archive [29,30]).…”

“…The renovation of the prefab residential housing carried out after 2000 in order to improve its energy and thermal protection properties can be considered generally beneficial. However, it is necessary to take into account the technological, material and environmental aspects, which naturally evolve in connection with the energy strategy of 2030 and beyond, and often bring new manifestations of defects and failures that we have not encountered before, and whose consequences are often remediable with new and high investment costs [31][32][33][34].…”

“…This is due to the loss of natural infiltration after the external wall is provided with thermal insulation and, as a rule, the original windows are replaced with better insulating and air sealing windows. With a poor ventilation regime, CO 2 concentrations may rise above the recommended values of 1500-1800 ppm [48][49][50][51].…”