Last edited 11 Jan 2021

Clinker in construction

Broadly, clinker refers to a stony residue resulting from burning coal or from a furnace. It is a common component of aggregates, Portland cement, brickwork, blockwork, paving and so on.

Archaeological Evidence for Glassworking, Guidelines for Recovering, Analysing and Interpreting Evidence, published by Historic England in 2018, describes clinker as: ‘A fused material produced at high temperatures, here used to describe the waste from coal-fired glass furnaces.’

The term ‘clinker built’ refers to a method of boat building in which the planks that make up the hull overlap. This is also referred to as lapstrake.

Its originates from the word 'clink' or 'clench', ie clenching together, or fusing.

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