Twin track wire lath
A welded wire lathing material for mounting stucco plaster and the like onto a building frame. This lathing material comprises intersecting transverse and primary longitudinal strands substantially located in a first plane. It also comprises secondary longitudinal strands also substantially placed in first plane and closely spaced with, some of primary longitudinal strands, thus forming longitudinal slots located at predetermined spaced intervals extending across the lathing material. The slots are wider than the shaft, but narrower than the head, of fasteners predetermined for attaching the lath to building frames. The longitudinal and transverse strands are welded together where they intersect to form a rectangular mesh approximately located in the first plane. In addition, spacing furrs are formed in the mesh by bending the transverse strands into indentations perpendicular to, and on one side of, the first plane, at predetermined space intervals and located away from points of intersection with the longitudinal strands such that the tip of the indentations defines a second plane away from the first plane. This furring structure allows the lathing material to be kept mostly separated from a building frame when it is placed with the indentations against the building frame. This structure together with shaping and flattening of the longitudinal strands allows the lath to be easily packaged into rolls.
1. A welded wire lathing material packaged into a roll and for use in mounting stucco plaster and the like onto a building frame, comprising,
a) a plurality of spaced-apart, approximately parallel transverse strands substantially located in a first plane;
b) a plurality of spaced apart, approximately parallel primary longitudinal strands also substantially located in said first plane, intersecting and in contact with said transverse strands;
c) a plurality of secondary longitudinal strands also substantially placed in said first plane and closely spaced and approximately parallel with, some of said primary longitudinal strands, thus forming pairs of longitudinal strands, said pairs defining a plurality of longitudinal slots located at predetermined spaced intervals extending across said lathing material, said slots being wider than the shaft, but narrower than the head, of fasteners predetermined for attaching said lath to said building frame;
d) said plurality of transverse strands welded to said primary strands and to said secondary strands at their points of intersections, and forming a rectangular mesh approximately located in said first plane;
e) a plurality of spacing furrs formed by bending said transverse strands into indentations perpendicular to, and on one side of, said first plane, at predetermined space intervals extending across said lathing material, and located along said transverse strands, each said spacing furr situated between two of said primary longitudinal strands or between one of said primary longitudinal strands and one of said secondary strands, the tip of said indentations defining a second plane away from said first plane.
2. A lathing material as in claim 1 wherein longitudinal strands have a shaped cross-section profile.
3. A lathing material as in claim 2 wherein said longitudinal strands have a flattened cross-section profile.
4. A method of fabricating a building wall using welded wire lath material adapted to be wound in rolls, for applying stucco on a building frame, comprising the steps of
a) arranging in a transverse direction a plurality of spaced-apart, approximately parallel transverse strands substantially located in a first plane;
b) arranging in a longitudinal direction, a plurality of spaced-apart approximately parallel primary longitudinal strands also substantially located in said first plane, intersecting and in contact with said transverse strands;
c) arranging in a longitudinal direction a plurality of secondary longitudinal strands also substantially placed in said first plane and closely spaced and approximately parallel with, some of said primary longitudinal strands, thus forming pairs of longitudinal strands, said pairs defining a plurality of longitudinal slots located at predetermined spaced intervals extending across said lathing material, said slots wide enough to allow the shaft of fasteners to penetrate said slots, but narrower than the head of said fasteners, said fasteners predetermined for attaching said lath to said building frame;
d) welding said transverse strands to said primary strands and to said secondary strands at their points of intersections, said plurality of strands forming a rectangular mesh located in a first plane; and
e) forming a plurality of spacing furrs by bending said transverse strands into indentations perpendicular to, and on one side of, said first plane, at predetermined space intervals extending across said lathing material, each said spacing furr situated between two of said primary longitudinal strands or between one of said primary longitudinal strands and one of said secondary strands, the tip of said indentations defining a second plane away from said first plane, thus allowing said lathing material to be kept mostly separated from said building frame when it is placed with said indentations against said building frame.