Assessoria en Bioconstrucció de l'IEB




Humidity measurement in an apartment in el Clot (Barcelona) in order to find out the cause of mould on the walls

Category : Uncategorized · by May 30th, 2018
METHOD

Measurements have been registered for a full week on temperature, humidity and CO2. Besides on a daily basis, inside façade surface temperature has been taken.

WHAT HAVE WE FOUND?

Regarding the indoor air humidity the readings were extreme: 58 – 85 % RH due to lack of ventilation.

Regarding the surface humidity on the façade walls, indoor side, the readings were high: > 70% due to lack of ventilation.

Regarding the humidity contained inside the finish indoor material the readings were low: 0,5%.

Regarding the indoor air temperature the readings were fine: 23 – 26 ºC Regarding the CO2 the readings in the bedroom were extreme: 2.600 ppm due to lack of ventilation.

WHAT SHOULD BE FOUND

Indoor air humidity: readings should be between 30 and 70% RH and ideally between 40 and 60% RH.

Surface humidity on the façade walls, indoor side: readings should be below 70%.

Humidity contained inside the finish indoor material: for plaster readings should be below 4% and ideally below 2%.

Indoor air temperature: 23 – 26 ºC is a fine temperature for summertime.

CO2 concentration: readings should be below 1.000 ppm and ideally below 600 ppm.

RECOMMENDED ACTIONS

Increase ventilation

Wall surface temperature measurement
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