Category: Credit: Oliver Wright

Crown glass.

Tuck pointing. A hard cement stopping mortar has been used.

Diaper brickwork. Lozenge pattern.

Inverted warm deck roof construction.

Corroded Hy-Rib lath and spalling of cover concrete.

Unbraced trussed rafter roof. Built in the 1970s.

Plaster on lath. Mould growth due to missing insulation.

Dragon tie detail at bottom of roof hip.

Bamboo.

Inside double-glazed window. Crystallisation of desiccant.