Three experts discuss the conservation of mid-20th century lightweight, thin-skinned building products: Elyse Howell-Price of Grimshaw Architects on the repair of cladding panels at the Herman Miller factory, Bath; Thomas Pearson of Ove Arup & Partners on approaches to the renewal of glazed skins of James Stirling’s red buildings; and Robyn Pender of Historic England on HE’s new areas of research.