EXTERNAL ENVELOPE Refurb or renew?


When flat roofs fail, the task of stripping, disposing of and replacing it is a costly and time-consuming process. This is particularly true for hospitals. Here, Rod Friel of Wolfin discusses a solution that can save on time, money and disruption


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failed flat roof allows moisture to enter the roofing layers, resulting in a loss of thermal performance and disturbance to building occupants. For hospitals, the integrity of the building is key. If this is lacking, important areas of the hospital, such as the wards, operating theatres and plant rooms could be compromised. A failing roof needs to be rectified promptly.


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Clients often make the assumption that the entire roof will need replacing, causing even more disruption, while delaying the repair of any damage inside the building. For vulnerable patients needing around the clock care, the work could cause disruption from an air quality and noise perspective, having a negative impact on


Clients often make the assumption that the entire roof will need replacing, causing more disruption


their wellbeing. Hospitals cannot afford the significant downtime or financial cost. Time should be taken to undertake a roof condition survey to ascertain if the existing roof layers and structural components have become unstable. If so, a strip and recover should be the chosen method. If a vapour control layer is absent or damaged or if there is fungus, mould or mildew in the roofing layers, the roof must be stripped and disposed of.


ADF OCTOBER 2017


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