Abstract: The invention relates to moisture resistant, through-wall, multicomponent copper flashing material and a continuous process for its preparation. Copper sheeting substrate having special properties is laminated on at least one side with fiberglass sheeting having special properties. The fiberglass sheeting is bonded thereto by means of a thin coating of waterbased adhesive, preferably water based polyvinyl emulsion or vinyl acetate emulsion adhesives. A continuous process provides the copper sheeting from a bulk roll to be simultaneously spray coated on both sides with liquid water based adhesive, forcefully engaging and laminating each side with the fiberglass sheeting, air drying and curing the thinly coated adhesive laminated fiberglass sheeting bonded to the copper sheeting. The final multilaminated flashing material has excellent mechanical properties and chemical resistance.

Abstract: The invention relates to moisture resistant, through-wall, multicomponent copper flashing material and a continuous process for its preparation. Copper sheeting substrate having special properties is laminated on at least one side with fiberglass sheeting having special properties. The fiberglass sheeting is bonded thereto by means of a thin coating of waterbased adhesive, preferably water based polyvinyl emulsion or vinyl acetate emulsion adhesives. A continuous process provides the copper sheeting from a bulk roll to be simultaneously spray coated on both sides with liquid water based adhesive, forcefully engaging and laminating each side with the fiberglass sheeting, air drying and curing the thinly coated adhesive laminated fiberglass sheeting bonded to the copper sheeting. The final multilaminated flashing material has excellent mechanical properties and chemical resistance.

Abstract: A mesh device for retaining mortar and other debris within a mortar-cavity-wall so as to prevent such material from falling in front of and hence blocking the “weep holes” placed at the bottom of such a wall to permit the egress of moisture condensate that forms within this type of wall. The device of the present invention is a rectangle of thin, openly woven mesh of basically a planar shape but with “bumps” distributed across the plane in such manner that when the device is placed upright within the cavity the bumps form barriers to the dropping of mortar and other debris. The bumps themselves, being made of the same material as the rest of the device, are fully permeable to moisture working its way down the cavity. Furthermore, there is an offset of the bumps in one row from those in the next so as to further reduce the possibility of a blockage occurring, say by debris accumulated on the bumps.