![\"P1040547\"](\"http:\/\/airquality.me.uk\/wp-content\/uploads\/2013\/10\/P1040547.jpg\")
<\/a>The source of original water leak<\/p><\/div>\n
The property owner has done his investigation and discovered the leak to the loft boiler himself. He contracted a local repair specialist who promptly resolved the problem with the boiler. The property owner was expecting the indoor air quality problems to gradually subside as the wet wall dry.\u00a0 However the situation did not progress as expected and mould patches have started to appear in the adjacent corridor, bathroom and kitchen.\u00a0 Several months after the discovery and repair of the leaking boiler the indoor air quality in the house was getting progressively worse to the point the situation became unbearable.<\/p>\n
I was appointed to investigate the reasons for poor indoor air quality and safely remove the existing mould contamination. The moisture mapping in the property has revealed that even though the upper parts of the walls have been dry or getting dryer the lower parts were still very wet. \u00a0The moisture content in the bottom part of the wall was too high to be caused by the boiler leak several months down the line. Assessment of the whole property showed that the water damage to bottom part of the walls was concentrated to a relatively small area in the centre of the property and was affecting only 4 walls and about 20 square meters of the flooring.\u00a0 The moisture mapping indicated that there might be another problem hidden in the kitchen area. I have removed the kitchen units, appliances and dismantled part of the wall kitchen.\u00a0 It became immediately obvious that the water damage was not limited to the toilet itself. Careful investigation of hidden pipe works and utility water discharge pipes showed several slow dripping leaks. Almost every joint on the old copper piping was affected by leak to some degree.<\/p>\n
<\/a>Stagnating water under kitchen units<\/p><\/div>\n
Dripping water was stagnating behind the fixed kitchen units where it was saturating the flooring and adjacent block and plasterboard walls. This leak has most likely appeared simultaneously with the loft boiler leak or shortly after and thus more obvious problem has masked the hidden one.<\/p>\n
The presence of relatively large amount of water for a long period of time has caused quite serious fungal contamination to part of the property. Removal of the toilet suspended flooring showed significant wood rot with fungal strands (rhyzomorphs) penetrating into the under floor cavity. Most of the fungal contamination was caused by wood rotting fungi. The indoor air quality was mainly affected by microbiological volatiles compounds (MVOC)<\/a> released by these fungi. The spore count in the property was quantitatively similar to the background count however the identification to individual genuses showed significantly elevated numbers of Penicillium\/Aspergillus \u00a0moulds and also showed presence of water damage mould Stachybotrys absent in the outside environment. \u00a0Subsequent analysis and identification of the moulds confirmed the presence of Aspergillus flavus<\/a> and Stachybotrys chartarum<\/a> moulds.<\/p>\n Moslty wood rotting funig with black staing from stachybotrys chartarum mould to the back plasterboard partition wall<\/p><\/div>\n Wood rotting funig, water transporting fungal strands visible<\/p><\/div>\n My investigation has showed that the property is still suffering from significant water damage n previously unidentified areas and that the mould contamination has extended into the kitchen and lounge area.\u00a0 Identification of mould also confirmed that potentially hazardous moulds were presence at the property and there exist a risk to health of the occupants.<\/p>\n After the investigation has been completed the property owner has involved his insurance company and substantial demolition and repair works had to be carried out to rectify the problem.<\/p>\n<\/a><\/a>