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Indoor air problem repairs

Repairs can be made quickly if considered necessary based on the results of the indoor air investigations, in order to allow for continued use of the space. The necessary repairs may be targeted at the entire building, a part of it, or a technical system like ventilation. Planning extensive repairs takes time.

The primary method of repair is to remove the reason for the damage and fix the damage, as well as repairing or replacing faulty equipment.

Typical repairs and actions that improve indoor air include the following:

• servicing the ventilation system
• repairing microbial damage
• additional sealing work
• removing sources of fibres
• repairing water damage
• removing dust from high places
• adjusting the heating system
• rinsing the sewers
• replacing surface materials.

If the indoor air problems are caused by fibre sources in the silencer of the ventilation system, for example, the materials for the silencers are replaced and coated. The quality of indoor air can often also be improved quickly through adjusting the amounts of air and reducing the temperature of supply air.

If microbial damage cannot be removed from the structures due to their location, the air tightness of the structures is improved. The sealing repair will prevent the impurities from entering the indoor air.

In addition to sealing the structures, a damaged structure or space can be depressurised. This means that any flow of air will be directed towards the damaged space or structure. Depressurisation can be used in crawl spaces below a building, or technical tunnels under a floor, for example.

Sometimes, renovation is necessary

In some cases, problems may be so extensive that a complete renovation of the building may be necessary. One such example is the construction of a ventilation system.
The users of a building must usually be moved to temporarily facilities for the duration of renovations or other extensive repairs. The planning and implementation of extensive renovations may take several years.

Monitoring the repairs

The success of the repairs performed can be monitored with tracer tests after sealing work, for example. If the users of the facilities continue to suffer from indoor air-related symptoms after the repair, it must be ensured that all necessary actions have been taken at the site. In case of difficult problems, some of the people with the worst exposure may not be able to return permanently to the building even after it has been repaired.

06.12.2019 19:18