Company: MITIE Tilley Roofing
Project: Howard and Rainham Girls Schools
Materials used: Self-adhesive VCL, Thermazone PIR Plus, Total Torch Vapour Dispersion underlay, Olympic Thermaweld capsheet, GRP trim
MITIE were tasked with undertaking the complete refurbishment of the roofs to the sports hall, corridor and changing rooms which serve both schools in Rainham, Kent, in 20 weeks of term time and holidays.
The existing roof comprised a multi-layer build-up of felt and insulation on the original chipboard timber decking with a number of glazed mono-pitch rooflights of Georgian wired cast glass set in glazing bars.
The steel frame supporting the roof structures, particularly the mono-pitch rooflights, was found to be very “slender” and after a structural analysis was carried out, additional “top hat” steel supports were installed to the flat roof sections and the specification for the mono-pitch rooflights was changed to a lighter, composite panel construction.
The sports hall was closed while the work was carried out, utilising safety netting internally and scaffolding externally. As the client’s budget did not allow for a temporary scaffold roof enclosure, stripping of the existing decking and glazing had to be carried out with even greater care than usual and was very reliant on the winter weather.
However, the contract was completed on time and within budget, the client subsequently instructing MITIE on four further roof refurbishment projects, resulting in the contractor being on site for an additional 42 weeks involving more than 3,250m² of Icopal materials.