overlayer

noun (n)

1. 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 (noun.artifact)

   Sinonim: overlay, sheathing

   Sumber: wordnet30

2. One who overlays; that with which anything is overlaid. (noun)

   Sumber: webster1913