Midland Felt Roofing installs TNi roofing solution at North Leigh primary school.

Flat roof waterproofing systems by TN International (TNi) were specified for a primary school refurbishment because they excelled in two key areas – technical support and value for money.

TNi’s Börner Hybrid Warm Roof System, including LogicPIR insulation, was used on the reroof of North Leigh Church of England Primary School Academy in Witney, Oxfordshire, during the summer term (2021).

Specialist sub-contractors and TNi Approved Roofing Contractor Midland Felt Roofing were on site for 10 weeks, installing the TN30 Hybrid System incorporating Safe2Torch detailing, while the 190-pupil academy, a member of the Oxfordshire Diocesan Schools Trust, was operational during the works.

Specifier Tom Fry, a building surveyor with the Oxford Diocese, explained that TNi carried out the initial site survey, prepared the specification, monitored the installation, and signed off the work with a 30-year guarantee covering workmanship and materials.

Having worked with the company’s roofing specification team member Terry Davis MIoR before, he was impressed with the technical service and support provided by TNi, along with the wide variety of waterproofing options offered. Indeed, the diocese has now used TNi systems on a number of school projects in the past three years.

At North Leigh school, a total of 400m2 of TNi’s high performance bituminous waterproofing was installed. The specification also called for the existing insulation to be upgraded with TNi LogicPIR insulation to comply with current U-values and for the existing fragile rooflights to be replaced with new TNi rooflights which conform to the latest standards and regulations.

David Jones of Midland Felt Roofing said: “We needed to work in close liaison with the school as it was open for most of the project. The children’s safety was of paramount importance and there was a very good relationship built between us and the school which enabled us to do the works during school term time. This was essential as the roof was in desperate need of refurbishment due to the number of leaks it had developed and there would have been too much work to undertake during school holidays.

“Apart from that it was a relatively straightforward roofing project as Midland Felt are very used to working on these types of projects and with these types of clients. The most important thing was to work with the school to keep everyone safe. The TNi Hybrid waterproofing system performed excellently, as it always has.”

He added: “The client was very happy with the end product and system installed, with works undertaken during school term time, and completed on time and within budget.”