It’s a week since the SIG Design & Technology Seminar on 8 Steps to a Perfect Roof, hosted at the Building Centre by the RIBA Journal. Today they are looking back at the highlights and sharing additional resources online. AWW’s Andrew Boardman was the presenter of ‘Zinc Cladding adds Sustainability for Imperial Tobacco HQ, Bristol’.  Andrew was the final speaker and he spoke about the decision to use matt grey NedZink NOVA in beautifully flat Proteus HR honeycomb panels and his talk was full of useful advice and sharing lessons learned, and how the use of metal cladding can create lasting beauty in a building.