The process or material of covering something with clay; the clay coating itself applied to walls or structures.
From 'clead' + the -ing gerund suffix. This noun form emerged as the building practice became standardized enough to warrant its own technical term.
Medieval building sites would have piles of 'cleading clay' mixed with straw—it's the ancestor of modern drywall mudding, and some traditional buildings still use authentic cleading repairs after hundreds of years.
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