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Buildings, Maintenance & Refurbishment

A lesson in roofing refurbishment at Kelmscott School


uring the refurbishment of every educational facility, it’s vital to get the product specification right to ensure the project leaves a lasting legacy of

quality, performance and longevity. At schools, academies and colleges, the need for proven performance extends far beyond design flexibility and aesthetics, as both the specifier and installer must consider any effect that maintenance or replacement works would have on the building and its occupants. If a waterproofing or roofing system is specified and installed correctly, it

will perform well and go largely unnoticed by the school, teachers and students alike. However, the wrong specification or an inadequate installation could result in premature failure and lead to poor building performance, compromised internal environment and inadequate health and safety standards. This is simply not an option. A roofing system’s must first provide weather protection, as well as

thermal insulation, sound insulation and fire performance. But in educational facilities, it must also ensure minimal downtime during the application. At Kelmscott School in the London Borough of Waltham Forest, the installation of a 3,000m2 Esha Waterproofing System from Radmat Building Products provided the perfect combination of ease of installation, cost effectiveness and proven performance for the challenging refurbishment.

Esha makes the grade Part of an £11.2m Building Schools for the Future (BSF) programme funded refurbishment, Kelmscott School required a reliable roofing system for the main school building and several language blocks. With over 900 pupils and the project starting prior to the 6 week summer holiday, it was vital that the application caused minimal disruption and was also completed in time for the new term in September. Appointed to complete the complex roofing refurbishment, London-based

Thameside Roofing turned to the Esha Waterproofing System. Achieving the refurbishment programme within the required time period required the use of a variety of Esha Waterproofing Systems including self-adhesive EshaFlex 370 SA Black mineral reinforced bitumen membrane, EshaFlex 370 Black mineral reinforced bitumen membrane and EshaUniversal single layer POCB membrane – providing the perfect solution at Kelmscott School.

A textbook refurbishment Working closely with Radmat, Thameside Roofing completed the 12 week contract in just 8 weeks. Close liaison with the school proved paramount to the project’s success and early completion, with a substantial amount of planning and site co-ordination to ensure classrooms were vacated whilst roofing works took place without impacting on the school curriculum timetable.

30 April 2015

Careful planning was also required to install the roofing system safely and

satisfactorily with minimum disruption to the school, its teachers and pupils. Due to the large presence of asbestos-lined ceiling boards, all areas directly affected by the works needed daily air monitoring tests to ensure no presence of asbestos fibres where found. Installation of the roofing system first required Thameside Roofing to treat

the existing metal roof surfaces before mechanically fixing Radmat’s timber faced ProTherm PIR insulation board over the roof. The factory laminated 9mm plywood finish of the ProTherm PIR OSB Comp proving a smooth robust finish to complement the thermal performance improvements provided by the insulation. To ensure the insulation board was protected by a durable long lasting

roofing membrane Radmat specified EshaFlex 370 SA Black mineral, a self-adhesive SBS modified reinforced bitumen membrane for the main roof areas.

Internal gutters were lined with EshaUniversal, a robust 3.2mm thick

TPO modified single layer membrane without chippings to aid water flow. On completion of each phased segment of works, Thameside Roofing

undertook the delicate operation of removing existing ceiling tiles from some 50 classrooms to allow the asbestos lining treatment to take place. On completion, the tiles were re-installed. Combining superb materials, high standards of workmanship and a

25 year insurance backed guarantee, Radmat and Thameside Roofing collaborated to extend the roofs’ life expectancies with a high quality refurbishment application that far exceeded the client’s expectations.

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