How many letters does the top answer for “one who overlays; that with which anything is overlaid.” have?

The most common answer is overlayer (9 letters).

Crossword clue: one who overlays; that with which anything is overlaid.

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

overlayer 9 letters web-def

protective covering consisting, for example, of a layer of boards applied to the studs and joists of a building to stren