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The Forge, Redclyffe Road

Formerly a bus depot bounded on two sides by existing residential developments, in 2014, Telford Homes acquired the land at Redclyffe Road in a swift unconditional purchase of the site without planning consent.

The scheme comprises of residential apartments clustered around communal courtyards, which are accessed off a new public street with substantial public realm enhancement. The new buildings range from three to five storeys with a 14-storey focal building.

Radmat was engaged together with RMA Architects to design a roofing scheme to meet Newham Council’s strict attenuation and flow rate requirements. These requirements caused the development many challenges, the most pressing being meeting the strict run off limits imposed by the council across a geographically restricted site with reduced height zones. Due to this and close proximity to neighbouring properties, below ground attenuation had to be kept to a minimum, leaving the roofs and high level podiums as the key attenuation strategy. Radmat’s Blue Roof System had to be redesigned multiple times to meet the stringent attenuation targets, even utilising the ‘fingers’ of the roof to maximise the available space.

The development had to meet high thermal standards and provide as much amenity space to residents as possible while simultaneously providing extensive attenuation-the system build ups were considerable, hence design heights at thresholds and parapets were compromised in some areas.

A series of inverted Blue Roofs were specified including PermaQuik Hot Melt Monolithic Membranes to provide a robust waterproofing, BBA certified for blue roofing applications and an independent durability statement for the design of the lifetime of the building. Radmat’s ProTherm Quantum Vacuum Insulated Panel System was installed in the most challenging areas, allowing the area to meet the thermal requirement in 80% less space compared to standard insulants, while still meeting the attenuation demands.

Finished with Radmat’s MedO Green Roof systems – both fully vegetated blankets for areas overlooked by apartments and seeded biodiverse roofs surrounding the PV panels – the roofs also incorporated ecological requirements for bio-diversity with different growing medium formulations and planting incorporated on different roofs. These habitat roofs have been included to promote environments that will support bees, butterflies and birds.