In the first instalment of this two-part technical feature, Roofing specialists from SIG Design & Technology (now AccuRoof) and EJ Roberts Roofing discuss the design and specification of one of the most complex roofs ever constructed in London with Architecture Today’s Technical Editor John Ramshaw.

In the second instalment of this two-part technical feature, Roofing specialists from SIG Design & Technology (now AccuRoof) and EJ Roberts Roofing, in conversation with Architecture Today’s Technical Editor John Ramshaw, discuss how one of London’s most complex and dynamic roofs was detailed, tested and installed on site.