A fastener cap assembly for securing protective wrap to lumber includes a plurality of fastener caps spaced from one another by breakable tabs along a first axis extending through a center of the fastener caps, with each of the fastener caps and breakable tabs comprising a substrate formed from a paper-based material. The fastener cap assembly further includes a groove extending across a center portion of the breakable tabs and penetrating inward from the top surface of the breakable tabs to a predetermined depth, and a protective material applied to at least the top surfaces of the substrates that forms a non-waxy and moisture-resistant protective barrier when cured.