Zinc cladding London-based Studio Webb added the red-zinc extension over the roof of the Victorian primary school in Battersea, creating two extra classrooms on a new second floor.
flat roofed extension with roof terrace - Google Search
Another flat roof extension with roof light and high level/clerestory windows (image elsewhere of how these look from the outside.
Helen Lucas Architects Edinburgh | project | hartington attic conversion edinburgh | living spaces
Gaining space with a rear extension and loft conversion | Real Homes
Lean to conservatories
Fraher Architects adds glass-roofed extension to terraced house in London
Loft conversion Modern zinc clad extension in Hackney London
Image result for contemporary, zinc clad dormer extensions
Roof extension to east london flat by Poulsom Middlehurst - amazing copper dormer