Grimsby Hospital

The roof area at Grimsby Hospital had an existing asphalt waterproofing membrane that had chippings to the surface. The existing waterproofing membrane has come to the end of its serviceable life resulting in water ingress through the roof structure into the building.

History Of The Project

Grimsby Hospital originates from a workhouse infirmary that opened in 1984, the facility then joined the national health service and Grimsby district general hospital in 1948. In the 1970s it was decided to build a modern facility on site. The hospital was officially opened by Diana, Princess of Wales in 1983 and was renamed in her honour.

The Challenge

The roof area was heavily populated with fixed machinery and upstands, this required a system capable of handling complex detailing in order to provide a seamless, watertight seal, It was important that the new roofing system was low odour and could be cold applied quickly and quietly to avoid the risk or disruption to staff, patients and visitors who would continue to use the buildings.

The Solution

The chippings are to be removed from the roof to expose the asphalt membrane. The existing asphalt membrane was to be made good to ensure it was suitable to be used as a vapour control layer onto which the Centech PIR Insulation can be installed.

There had been previous repairs to the roof, these were checked and when needed, repairs took place to ensure the surface was in a suitable condition to accept the new Centech PU Waterproofing system. The perimeter kerb details on the roof could be susceptible to water ingress, a Centech GRP trim was fitted on the edge to avoid this.

Performance Benefits

The liquid applied Centech PU System was installed by a Centaur Quality Partnership contractor. Eliminating the need for hot works, the Centech System dramatically reduced fire risks and, because it is low odour, did not expose the occupants to any pungent smells. A Centech 20 year single point guarantee for materials and labour was issued on completion of the project.