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Moisture and mold damage

There is always some mold everywhere. Mold can be detected in all buildings, for example, in wet areas, at pipelines and in outer-wall or roof structures exposed to moisture.

Mold becomes a health hazard when the structure is under a constant moisture load that facilitates abnormal microbial growth.

Causes of mold damage

The causes of mold damage include leaks in pipes, lacking or inappropriate insulation of wet areas, inadequate ventilation and construction errors that allow moisture to penetrate structures or concentrate in structures.

Microbial spores may be transported to indoor areas through structures, for example, from soil at the building foundation or from wall insulation if the wall structures are not airproof enough and the indoor air pressure is low. One factor contributing to mold problems is problems in ventilation.

Mold damage can also be caused by people. Possible causes of moisture damage include careless water handling or dishwasher installation and the blocking of ventilation routes.

How is moisture and mold damage evident?

Moisture and mold damage is often evident as a moldy or pungent odour. The odour is caused by microbial metabolism, so the odour varies by the types of microbes and the microbial growth environment (the construction material).

Excessive structural moisture usually manifests as peeling paint and plaster surfaces, darkening or bloating wood materials or visible microbial growth on the surface of the structure. Shower corners can also exhibit minor microbial growth, the removal of which should be carried out primarily by improving ventilation and cleaning surfaces regularly.

As necessary, moisture in structures can be detcted with, for example, surface structure moisture detectors.

Repairing damage

In case of easily detectable mold damage, the cause of the damage should be found out. The extent of the damage should be studied by opening structures in a sufficiently wide scope. As necessary, the extent of the damage to structures can be checked with material and swab samples.

For more extensive repairs, the area should be isolated from surrounding spaces by partitioning and de-pressurisation. After repairs, the area should be cleaned to remove any leftover dust.

09.07.2020 13:21