overlayer
1. [ noun ] protective covering consisting, for example, of a layer of boards applied to the studs and joists of a building to strengthen it and serve as a foundation for a weatherproof exterior
Synonyms: overlay sheathing
Related terms: protective_covering overlay
Similar spelling:   overlay
  overly
  overlarge
  overlie
  overlap
  overlord
  overleap
  overleaf
  overland
  overladen
  Oberlander
  overlapping
  overall