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Principal Place, Shoreditch

Radmat Building Products were contracted by Prater Ltd to provide a waterproofing and insulation system for Principal Place, a mixed use 600,000 sq ft development comprising of a 15-storey office building (home to Amazon HQ) 20,000 square foot of retail space and a 50-storey luxury residential tower (one of the largest residential buildings in London).

The development aimed to leave a minimal building footprint. This included careful planning regarding work and deliveries, ensuring congestion was as limited as possible with multiple trades onsite. However, one of the building’s main eco-friendly features were its green and brown roofing systems. This led to almost an acre of roof terraces complete with gardens being incorporated, meaning the standard of waterproofing had to be extremely durable to deal with more exposure to water.

Subsequently, Radmat’s PermaQuik PQ6100 Hot Melt Monolithic waterproofing membrane was chosen due to its BBA certification to last ‘the lifetime of the building’ along with its durability and compatibility with both green and brown roofing systems. PermaQuik PQ2017 Reinforcing Fabric and PQ2060/61 Detailing Membrane were also used to provide reinforcement for the 6100 system, ultimately delivering the highest and most robust standard of waterproofing.

Radmat’s ProTherm G XPS X 300 SL was the chosen roof insulation, due to its prestige standard of heating insulation, where it uses infra-red blocking particles to scatter and reflect heat radiation, meeting the thermal requirements. The ProTherm insulation was also an ideal choice due to its impressive sustainability standard, with a Zero Ozone Depletion Potential, a Global Warming Potential of less than 5, and a Green Guide to Specification A+ rating.