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I am co-owner of a 1960s apartment on the ground floor. My tenant told me again to go up mold on the interior walls while vents, openings on PVC windows were laid in 2008 and the whole apartment had been redone (change of radiator radiator installation THERMOR to coolant). What to do to annihilate these molds knowing that I asked my tenant to make a report to his insurer for expertise mas that the one refused a priori to take his statement. Thank you for your advice

On the ground floor, humidity can have different causes, two main main:
- too much condensation
- capillary rise.
If the apartment is properly ventilated and heated and the humidity persists, the condensation is not in question: it is then necessary to look at the side of the capillaries, which require to realize a waterproof barrier at the structural work.
Before embarking on this path, it is important that the condominium commission an expertise to establish a diagnosis, which will confirm or deny the presence of capillary rise.

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