When mould takes hold in a property, treating only what’s visible isn’t always enough. A recent call-out to a managed flat in Devon shows how our team not only tackled a severe biological mould infestation but also identified potential underlying moisture issues and provided practical recommendations to help prevent the problem from recurring.
Here’s how ServiceMaster Clean & Restore Devon tackled the issue.
The challenge
ServiceMaster Clean & Restore Devon were called to a managed flat with a severe biological mould infestation affecting two bedrooms and a bathroom. The worst concentration was hidden behind a headrest, where mould had developed largely out of sight.
In addition to treating the existing mould, we needed to identify any factors that could cause the problem to return.
The ServiceMaster solution
Our team carried out a full biological mould treatment across the affected areas to eradicate active spores and help make the property safe and hygienic again.
Following the treatment, we uploaded a detailed photographic report to the managing agent’s client portal within 24 hours, giving the property management team a clear record of the work completed and highlighting areas requiring further attention.
During the visit, we also identified a heavily contaminated fabric skylight blind that was beyond effective cleaning and recommended removing it.

Looking beyond the visible mould
Treating mould is only part of the solution. Unless you address the conditions causing excess moisture, it may return.
We advised the resident on practical moisture control, including appropriate heating and ventilation. Where residual staining remained, we recommended using a specialist anti-mould paint when redecorating, rather than simply covering it with standard emulsion.
Importantly, our team spotted a heavily blocked roofline gutter directly above one of the affected walls, which may be a source of moisture ingress.
We couldn’t safely reach the gutter with our ground-based gutter vacuum equipment because of the flat roofs below. We therefore advised the managing agent that a specialist access team would be required to clear and inspect the gutter, so they could address the issue and prevent water from getting in.
The result
The active mould was professionally treated, the managing agent received a comprehensive photographic report within 24 hours, and both the resident and property manager were given clear recommendations to help prevent the problem from recurring.
By looking beyond the immediate cleaning requirement, we also identified a potential external source of moisture and helped the managing agent take the next steps toward a longer-term solution.
Need help with a mould problem?
At ServiceMaster Clean & Restore Devon, we combine specialist cleaning knowledge, industry-approved products, and years of experience to deliver safe, effective mould remediation services. Whether it’s a small patch of mould or a severe outbreak, our team can restore your property quickly and efficiently.
If you’re concerned about mould in your property, contact the ServiceMaster Clean Devon team on 01803 200 278 or email office@smcdevon.co.uk.






Our swift and professional intervention delivered several key outcomes: