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Gasholders, Kings Cross

Initially constructed 160 years ago, the newly restored Grade II listed Gasholder Triplets have been revived by Shepley Engineers, Yorkshire. As part of the Kings Cross Regeneration programme, the cast-iron structures have been re-housed to just north of Regent’s Canal. The original triplet frames have been re-purposed around a series of 1,2,3 and 4 bedroom apartment suites.

The apartments designed by WilkinsonEyre were constructed within the triplet structures, each including walkways interlinking one another. The apartments also bares its own roof garden. The suites were built in a circular structure, contained within the surrounding frames, and whilst pleasing to the eye, caused a number of difficulties within the construction process.

Radmat designed a bespoke roofing solution in order to fulfil the 153.7m2 walkway and roof garden, with a limited upstand height, to a U-Value requirement of 0.2W/m2K.

Thus, Radmat’s ProTherm Quantum PURE Vacuum Insulation Panels (VIP) system was chosen, accompanied by ProTherm XPS Infill Boards. As Quantum cannot be cut the XPS Infill was cut to shape to fit around penetrations and curved upstands. The VIP system was supplied over 5mm Regupol RCM to the external walkways and roof gardens providing a level threshold detail. It was also able to fill the space economically and overcome a complex roof shape, with a high number of pitch pockets. The insulation was versatile enough to overcome the challenging structure shapes while still delivering the best thermal and level threshold performance.

Quantum was the only BBA certified VIP Inverted Roof Insulation on the market able to meet the required U-value and maintain a 75mm waterproofing upstand for NHBC requirements. Radmat also provided a full site survey, bespoke layout design and installation support onsite.