A nonmetallic masonry flashing is disclosed. The flashing includes a laminate that is applicable to cavity walls and particularly masonry block walls. The flashing has an adhesive layer which is a pressure activated, hot melt adhesive with various additives. The additives provide reinforcement to the entire structure and uses fiber glass or filamentous fragments of polypropylene. These additives are admixed into the hot melt adhesive. The nonmetallic masonry flashing employs peel-and-stick technology. After removal of a release sheet, the adhesive layer is pressed against the rough surface of the masonry block. The pressure activation creates a durable bond with the masonry block. Incorporated into the nonmetallic masonry flashing are various high-strength, polymeric laminates. The high-strength of the polymeric laminates is derived from advances in cross-lamination and laminates having a scrim as a core component.