Except they don’t look pretty, fungi by their presence endanger our health because they can cause coughing, watery eyes, runny nose, and are especially dangerous for asthmatics. They most often appear due to the retention of moisture on the walls.
Why do fungi and mold form indoors?
Water vapor is generated in every heated space. Its quantity depends on several factors, and most of all on the “production” of steam, ventilation and temperature differences.
There are sources of steam in every house or apartment, and it can be people who produce 2 to 5 liters of water vapor a day by breathing and evaporating. There is also cooking, bathing, drying laundry, which further increases the amount of steam.
Water vapor pressure is applied to the surrounding walls and ceiling. It is measured in millibars and is invisible to us, but it significantly affects the microclimate of space.
In winter, the outer walls of heated rooms are exposed to temperature differences. In contact with a cold wall, the steam cools and condenses.
The process is very similar to the appearance of dewy mirrors in a warm bathroom, only much slower. Fungal and mold spores form in wet places and microorganisms develop.
How to solve the problem?
Raising the temperature by installing thermal insulation represents the most efficient solution to the condensation problem. It is necessary to insulate the building elements so that the surface temperature is higher than the dew point temperature, while taking into account the vapor permeability of the layers in order to efficiently remove water vapor from the structure.
Doing quality thermal insulation is the best solution, but it requires significant financial resources and extensive construction work.
Remediation of condensation problems is based on raising the temperature of the inner surface of the wall above the dew point temperature or lowering the humidity in the air by drying or ventilating.
Performing additional thermal insulation from the outside is demanding and expensive, so the problem is the most common repairs using thermal coatings on interior surfaces.
Draco Clean 600 (Photo: Draco)
The appearance of fungi and mold is the most common indicator that condensation is occurring on cold walls. Remediation begins with protection of the surrounding surfaces and application fungicides, molds and algae removers DRACO CLEAN 600. The product is applied to the surface by spraying and does not dilute. It does not contain chlorine and acids, and after application it is necessary to leave it to act for 24 hours.
The surface should then be cleaned of dead fungi and mold, and all loose parts should be removed and repaired. It is then applied thermal coating DRACO SHIELD 600 which is diluted with 10-15% water and applied in two layers with a brush or roller, and if the appearance of fungi and mold was pronounced, the third layer is applied with a material consumption of 100g / m2.
Thermo premaz DRACO SHIELD 600 (Photo: Draco)
Due to the presence of special hollow fillers, thermal coatings have reduced thermal conductivity and thus raise the surface temperature.
DRACO SHIELD 600 thanks to hollow glass balls has 10 times lower coefficient of thermal conductivity than concrete and thus keeps the surface warm and makes the space comfortable and healthier to stay.
Source: Gradjevinarstvo.rs – VESTI by www.gradjevinarstvo.rs.
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