Protan’s got high speed rail training in the north covered

More than 1000 apprentices will learn how to build world-leading rail in a state-of-the-art environment.

And the world leading philosophy runs throughout, even on the roof of the £21million, 7200m2, three-storey Doncaster National College for High Speed Rail. Main contractor Willmott Dixon is using Protan single ply membranes to ensure both the inverted and warm metal roofs remain weatherproofed for up to 30 years.

Explained Peter Gleave of Willmott Dixon, “It’s an unusual roof configuration, being a variation on a gambrel or sawtooth design. Protan was the preferred membrane on the project. To us it was of added benefit that we could single-source the top single ply, upper and lower protection layers, vapour control and anti-slip options, plus the accessories such as rainwater outlets, and utilise Protan’s technical support on a complex structure.”

Added Steven Holford, Protan Regional Sales Manager, “The National College will train thousands of people to a level designed to make the UK a world leader in high speed rail. It is fitting world-leading companies are involved in the construction. Protan is a world leader itself, in membrane technologies, and operates in 50 countries.”

For the inverted roof, layers of Protan’s ballast roof system have been built up on the concrete decking. Protan F300M polypropylene fleece was loose laid as upper and lower protection layers, then covered with 1.5mm thick Protan G membrane with anti-slip surface, insulation, and Protan F2b polypropylene fleece as the filter layer under 50mm gravel.

The warm metal roof was constructed by mechanically-fixing Protan SE1.6mm standard overlap membrane with textured anti-slip surface over the insulation, Protan PE vapour control layer and profiled galvanised steel deck. Protan Progrip walkway provides additional surface protection for any roof maintenance.

Protan G membrane, the core of the ballasted roof system, is a glass fibre reinforced, microbe durable PVC membrane for gravel ballasted roofs, inverted roofs, and green roofs. Protan G membrane can withstand high and low temperatures and attack by micro-organisms. Loose-laid, it provides a fast and safe means of creating an FLL compliant roof.

Protan SE membrane is also certified to deliver, and potentially surpass, the energy efficiency requirements laid down in Approved Document L, and, under the Green Guide, achieve a A+ rating.

Protan membranes achieve durability in excess of 30 years, with air leakage controlled in line with latest Building Regulations, and are fully BBA certified.

Established some 75 years ago, and still privately-owned, Protan is one of the top 3 membrane manufacturers in Europe. A full support service, from RIBA-approved CPDs, NBS specification and in-house CAD design through to technical advice is provided from Protan UK’s Warrington office and training facility.