Moulds should worry!
Until now, detecting fungal contamination effectively meant searching for visible signs of development, suspicious odours or signs of humidity. Air samples could also be taken, and cultivatable moulds could be identified and counted. Due to late identification, invisible contamination, there was no global technique capable of stopping contamination before irreparable damage was observed. Mould detection technology developed by CSTB will improve the situation...
All types of moulds emit VOCs (Volatile Organic Compounds) as soon as their development begins. These VOCs are special in that they pass through the walls and can be detected by sensors after only two days! CSTB used these specific chemical indicators of fungal growth as a basis for developing a hidden and recent contamination index. It was subsequently tested in the framework of the Housing campaign carried out by the OQAI (Observatoire de la Qualité de l'Air Intérieur – Indoor Air Quality Observatory).
A national patent, shortly to become international
This completely innovative detection technique was developed in 2005 when Stéphane Moularat was writing his thesis. In March 2007, the research worker and CSTB decided to patent the index (for homes and the different historic locations) in France. The index was published in several international reviews, and many countries showed an interest in it. This interest encouraged CSTB and Stéphane Moularat to initiate an international phase of the patent before September 2009. "The objective is to make this index known to an international public to broaden its field of action" says Stéphane Moularat. There is no doubt that moulds living in historic locations have a lot to worry about…