Implications of poor indoor air quality
Our clients choose us because of our professionalism and high standards of quality within our work. Clients understand that the indoor air quality of their properties is extremely important. There are numerous contributors to poor air quality such as chemicals, mould, particulates and poor ventilation, and the improvement of air quality is vital for human health.
On this occasion, we were off to Yorkshire to the town of Keighley, where our client has asked us to carry out an assessment of indoor air quality within their dental surgery, which was a two storey end terrace town building, situated in Crosshills town centre. The surgery consisted of a ground floor holding two dental surgeries, a decontamination room and a combined reception and waiting area. On the first floor there were two toilets, a staff room, records room and a manager’s office. There was also a cellar located in the lower part of the building below the reception area.
Carrying out an assessment of indoor air quality
There was a history of long term damp in the reception area, basement and in the practice managers office on the first floor. Evidence of this historic damp and staining can be seen in the image above. Our surveyor began his assessment and thoroughly investigated all of the available rooms, using the moisture mapping process to navigate through the property and identify areas with elevated levels of moisture.
Samples were taken to assess the extent of any airborne moulds and to capture a snapshot of any contaminants within the indoor air. A sample is taken from outside of the environment, and a sample is taken from inside the environment, to allow analysis to compare the two. At the time of the assessment, the indoor airborne mould spore concentration was statistically similar to the existing environmental background, and the samples collected were dominated by undifferentiated spores, Cladosporium spores and ascospores, which are indicative of normal conditions.
What did we recommend our client?
The investigation showed that the property is suffering from penetrating damp in the attic of the property and it was recommended that the installation of protective cowls to chimney stacks should be carried out to prevent any rain water penetration. It was also advised to repair the shifted roof tails to prevent water penetration as there was evidence of water marks on the loose insulation in the loft (see image above) and also to repair the pointing in the corner of the reception area.
However, the overall indoor air quality is not affected by mould spores and be described as good, and there is no evidence of mould contamination inside the property.