Property with a history of mould growth
Tunstall, Stoke on Trent was home to our next project. Our client invited us along to his dental practice and requested that we carry out an assessment of indoor air quality in relation to selected biological contaminants. The property is a two storey building which consists of an open plan reception/waiting area, one dental surgery, a toilet, an offices, three storage rooms and a staff room on the ground floor. The first floor of the property consists of three dental surgeries, a decontamination room, an OPG room, a toilet and four storage rooms. The property also has a small basement which consists of one room.
The property has a history of visible mould growth on the wall next to the ground floor toilet. The fungal fruiting bodies are starting to grow out of the wall next to a radiator however there are no damp or mould related issues reported in any of the other rooms in the building. At the time of our assessment none of the staff members had reported suffering any adverse health symptoms which could be attributed to the building environment.
Results of building inspection and moisture mapping
Our surveyor started the investigation by visually inspecting the first floor. He could not find any evidence of water damage, damp, leaking services or fungal contamination. He then inspected the ground floor corridor next to the toilet as we are aware this area has a history of mould contamination. When visually inspecting the area our surveyor found evidence of fungal rot in the corner of the wall next to the customer toilet. The floor, plaster and skirting board immediately in the corner show elevated moisture levels. When investigating the area further our surveyor observed a small leak which had developed from the radiator supply pipe. This leak had wet the wall immediately below the pipe which resulted in the area of fungal rot. Evidence of a historic water stain was also observed on the ceiling in the ground floor corridor however the materials showed normal moisture content.
The ground floor staff room was the next to be inspected. Here our surveyor found evidence of water staining around the tops of the internal windows. The root cause of this staining is believed to be water penetrating through a deteriorated silicone seal on the external side of the window. The basement was also inspected however there was no evidence of water damage, damp, leaking services or fungal contamination.
Recommended remediation measures
After the investigation our surveyor was able to recommend the most suitable remediation measures for our client. He was able to conclude that the property is currently affected by penetrating damp in the staff room and a minor radiator leak in the corridor. We strongly recommend that the leaking radiator pipe in the corridor is repaired and the existing fungal rot is cleaned using anti-fungal treatment and/or replaced. Finally we also recommend that the deteriorated silicone seal around the windows is replaced in order to prevent water penetrating the windows via the seal.