Finding the root cause of reoccurring rising damp

Dental practice with a history of rising damp

Our next client contacted us as their property had a history of long term rising damp. It was our job to then attend the property and conduct an assessment of the indoor air quality and a damp survey in order to find the root cause of the rising damp and hopefully come up with the most suitable remediation measures to prevent this issue reoccurring.

The property was a two storey end of terrace property situated in Wakefield town centre. The property is a former residential property that was converted into a dental practice. On the ground floor of the property there is one dental surgery, a reception, a toilet, small laboratory and a plaster room. On the first floor there was a decontamination room, an office and a store room.

Finding the root cause of reoccurring rising damp

Conducting sampling and analysis

Samples for airborne moulds were collected from various rooms throughout the property. Our surveyor used a High flow 1600 air sampling pump to collect the samples onto Vesta spore trap cassettes. He then started a visual inspection and moisture mapping in surgery one on the ground floor. Evidence of rising damp was observed in the corner of the room. We knew prior to the investigation that this area was affected by a service leak in the previous months however this leak was identified, remediated and the wall was redecorated. Using a Tramex moisture encounter plus our surveyor tested the moisture content of the wall plaster and floor, which revealed normal moisture content. There was no other evidence of deterioration or damage to the external wall in this area. 

The waiting room/reception area was the next room to be inspected. There was evidence of marginally elevated moisture in the floor in the corner of the room although we could not identify any signs of water damage to the decorative finishes or any fungal contamination. The external wall was also inspected but it appeared to be in good condition. Our surveyor then inspected all other rooms on the ground floor and the first floor however there were no signs of water damage, damp, leaking services or fungal contamination were identified. 

Finding the root cause of reoccurring rising damp

Remediation measures we recommend

The samples we collected to assess the indoor air quality indicated that the indoor air is not affected by an elevated number of fungal spores and the composition of the identified fungal general was indicative of normal conditions. Therefore no further action needs to be taken to improve the indoor air quality. We recommend that the rising damp identified in the surgery on the ground floor should be closely monitored and redecorated if necessary. 

 

Link through to Sysco - Nationwide specialists in hazard exposure monitoring
Hi, I have been working in my job as an Indoor Air Quality Investigator for a number of years and decided to share my experience with you. You can find lot of related information on my website toxic black mould
Leave a comment