Opening this summer, the refurbished Beaumont Hotel in London’s Mayfair, by restauranteurs Jeremy King and Chris Corbin, promises a return to fin-de-siècle luxury, without the century-old heating standards. In its upgrade, Proctor Group’s Spacetherm PP high performance reinforced laminate was applied directly to the inside face of its walls, whose plasterboard/plywood composite is bonded to an aerogel blanket, yielding low U-values in next to no space.