A person who installs or repairs slate tiles, especially on roofs or floors.
From the noun 'slate' (a type of stone), plus the occupational suffix '-er.' Slate comes from Old French and Old English words for stone; the professional title emerged in medieval times when slate roofing became common.
Slaters were super important workers because slate roofs could last 100+ years—making them one of the most durable roofing materials ever, which is why slate-roofed buildings from medieval times still stand today.
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