Flood drying Case study
City of York Council

When severe flooding hit York during Christmas 2015, City of York Council (CYC) were left with the challenge of drying 59 ground floor properties across multiple sites.

Following the installation of dehumidifiers and a subsequent visit by the original drying contractor, CYC confirmed that drying times would be 'far longer than expected'.

In addition to this, intrusive preparatory works would be required, including hacking off plaster to 1m, and stripping out of all skirtings, doors, architraves, boxing, and flooring.

Determining a schedule of works and the accompanying cost quantum proved incredibly problematic, as it was not possible to accurately predict how long drying would take to complete for each individual property.

Finite drying times and fixed prices

Following a site visit, Trustheat advised CYC that it would be possible to dry each and every one of the 59 flooded properties with evaporation drying, taking only 4 days per property.

In addition to this, the proximity of many of the flats affected allowed us to dry two properties simultaneously, using just one of our mobile drying systems. With a fleet of drying systems working in tandem, it soon became clear that the overall drying programme could be reduced by a number of months.

With each property now benefitting from both a finite drying schedule, plus a fixed price for each unit, CYC realised they could accurately schedule a programme of works and outline a viable quantum, whilst still reducing stress and disruption for residents.

On completion, we had dried every one of the 59 properties affected both on time and on budget.

Reinstatement, reduced

Whilst the vastly reduced drying schedule was seen as the key benefit of using Trustheat, it soon became clear that employing evaporation drying would also provide a second major advantage, by vastly reducing strip out and subsequent reinstatement costs.

Fully expecting that plaster, skirtings, doors, architraves, boxing and flooring would have to be removed, CYC were delighted to learn that our drying solution and experience could release trapped moisture via evaporation from solid floors and covered walls non-invasively.

By reducing both strip-out and subsequent reinstatement, Trustheat further eliminated both time and costs. We also eliminated a significant amount of landfill waste and replacement materials, vastly reducing the carbon footprint of the project.

'Our teams were very impressed with Trustheat’s service offer and their general approach to working with us and residents.'

'Whilst this solution for drying is more expensive that traditional methods, there are significant savings from not having to remove and replace plaster work and kitchen fixtures and fittings. There is also less rent lost and temporary accommodation costs, so overall the costs of flood remedial works are lower using Trustheat's method of treatment.'

Mike Gilsenan

Head of Building Services

City of York Council

February 2016

flood restoration trailer

Self-powered trailers were situated outside the property, requiring no use of the resident's electricity.

flood drying pipework

Heat exchangers within the property convert liquid energy into high-volume, high temperature airflow.

Additional benefits

In addition to vastly reducing the time and cost of the drying programme, Trustheat ensured each and every property was full sanitised after what had been a major black water event.

Using fogging systems in conjunction with airflow generated by our systems, we ensured every inch of the property was fully sanitised. By constantly removing excess moisture throughout, all properties were dry, safe and free from odours, allowing contractors from Gentoo Construction to immediately start redecoration works as soon as drying completed.

Residents were reassured by finite schedules that ensured they avoided months of temporary accommodation and our self-powered systems removed the inconvenience of sizeable personal electricity bills that would have followed if dehumidifiers and fans had been deployed.

Our sophisticated network of installed probes recorded moisture content within structural materials in live time. Presented on completion of drying in every property, our reliable, accurate data confirmed to both residents and CYC that each property had been returned to pre-incident condition, allowing works and re-housing to continue with absolute confidence.

About Trustheat

With a fleet of mobile evaporation drying systems, we're able to efficiently dry multiple flooded properties following a surge situation.

Our technology often allows us to dry two adjacent properties with just one system, halving our charges to help our clients whilst doubling the speed of the recovery programme.

It was estimated that our work with CYC avoided a collective 1600 days + of dehumidifier drying, whilst also eliminating a vast amount of strip and out and reinstatement works.

Next: Find out how our evaporation drying solution can significantly reduce the time and cost of flood restoration projects.

To find out more contact us today


Trustheat Ltd - Company registration no: 09851520

Registered Address: Unit 2, Newbridge Industrial Estate, Pitt St, Keighley, BD21 4PQ

Image Attribution: Richard Scott from York, UK - [CC BY 2.0] - via Wikimedia Commons