Lath with Barrier Material

Abstract

A rigid wire lath product having a backing material which may be used to reinforce coatings, such as stucco, applied to building surfaces. The product comprises a mesh of longitudinal wires and transverse wires having a plurality of spaced indentations. A layer of backing material having apertures which straddle the indentations is interwoven in the mesh by longitudinal retaining wires extending along the bottom of the indentations. A method of manufacturing the product by providing a mesh of longitudinal and transverse wires welded together at their intersections substantially in a plane, and forming rows of spaced indentations in the transverse wires. A planar material is overlaid on the mesh such that said portions of the indentations protrude through apertures in the material. A plurality of wires are welded along respective rows of the protruding indentations to sandwich the material between the mesh and the wires.

1 . Welded wire lath comprising: 
 a mesh formed from a plurality of longitudinal wires and a plurality of transverse wires, said longitudinal wires and said transverse wires being welded at their intersections to form a mesh having a plurality of cells, said mesh having at least two opposed ends, each end being defined by a row of cells sharing at least one common longitudinal wire;    said transverse wires having indentations at spaced intervals, and longitudinal retaining wires being welded to said indentations to form rows of indentations coinciding with said longitudinal retaining wires;    a planar barrier layer of material having a plurality of apertures with webs therebetween, said material being interwoven with said mesh, said indentations extending through said apertures, and said longitudinal retaining wires spanning portions of said webs to retain said material to said mesh;    said material having two opposed ends each end comprising a row of end webs extending between a plurality of openings, at least one of said end webs being folded over and around a common longitudinal wire and being secured back onto itself about said common longitudinal wire.    
   
   
       2 . The lath of  claim 1  wherein said apertures are spanned by said longitudinal retaining wires but not by any other ones of said longitudinal wires.  
   
   
       3 . The lath of  claim 1  wherein each of said end webs is folded over and around a common longitudinal wire and each of said end webs is secured back onto itself about its respective common longitudinal wire.  
   
   
       4 . The lath of  claim 1  wherein said openings at said ends of said material define apertures bounded by a closed curve prior to said end webs being folded over.  
   
   
       5 . The lath of  claim 1  wherein said openings at said ends of said material define unclosed gaps along an edge prior to said end webs being folded over.  
   
   
       6 . The lath of  claim 1  wherein said common longitudinal wire around which said end webs are folded over is one of said longitudinal retaining wires welded to said indentations.  
   
   
       7 . The lath of  claim 1  wherein said apertures are circular.  
   
   
       8 . The lath of  claim 1  wherein said openings are larger than said apertures.  
   
   
       9 . The lath of  claim 1  wherein the apertures along at least one longitudinal row of indentations are sufficiently small that opposed edges of the apertures are in simultaneous contact with said indentation to retain said material against transverse displacement.  
   
   
       10 . Welded wire lath comprising: 
 a mesh formed from a plurality of longitudinal wires and a plurality of transverse wires, said longitudinal wires and said transverse wires being welded at their intersections to form a mesh having a plurality of cells, said mesh having at least two opposed ends, each end being defined by a row of cells sharing at least one common longitudinal wire;    said transverse wires having indentations at spaced intervals, said indentations coinciding with parallel rows of said intersections and spaced ones of said longitudinal wires being welded to said indentations to form rows of indentations along said spaced longitudinal wires;    a planar barrier layer of material having a plurality of apertures with webs therebetween, said support material and being interwoven with said mesh, said indentations extending through said apertures and said spaced longitudinal wires spanning portions of said webs to retain said material to said mesh;    said material having two opposed ends each being defined by a row of end webs extending between a plurality of openings each bounded by a closed curve and being larger in diameter than said apertures; and,    said end webs being folded over and around a common longitudinal wire that is welded to a row of said indentations, and being secured back onto themselves about said common longitudinal wire.    
   
   
       11 . A method of manufacturing a welded wire lath, comprising the steps of: 
 providing a mesh of longitudinal and transverse wires welded together at their intersections substantially in a plane;    forming rows of spaced indentations in said transverse wires, said indentations having portions extending out of said plane;    after said step of forming rows, providing a planar material having a plurality of apertures being spaced from one another in a pattern corresponding to the locations of said indentations and overlaying said planar material on said mesh such that said portions of said indentations protrude through said apertures;    after said step of overlaying said planar material, welding a plurality of elongated wires along respective rows of said protruding portions of said indentations to thereby sandwich said planar material between said mesh and said elongated wires.    
   
   
       12 . The method of  claim 11  wherein: 
 said planar material is provided in sheets, said sheets including interconnected webs of material between said apertures, and further including a row of end webs at least one side of said sheets said end webs extending between a row of end openings, and further including the step of:    folding and securing each of said end webs over onto itself around a common one of said elongated wires.    
   
   
       13 . The method of  claim 11  wherein said planar material further includes a plurality of holes, each of said holes having a diameter smaller than the diameter of said apertures and is sufficiently small that opposed edges of said holes are in simultaneous contact with its respective indentation to retain said planar support material against transverse displacement.  
   
   
       14 . The method of  claim 12  wherein said end openings in said planar material are bounded by a closed curve and said end openings are larger than said apertures.  
   
   
       15 . A method of manufacturing a welded wire lath, comprising the steps of: 
 providing a mesh of longitudinal and transverse wires welded together at their intersections substantially in a plane;    forming rows spaced indentations in said transverse wires, said indentations having portions extending out of said plane;    providing a plurality of sheets of planar material each of said sheets: 
 having a plurality of apertures being spaced from one another in a pattern corresponding to the locations of said indentations;  
 including interconnected webs of material between said apertures;  
 having a row of end webs at least one side of said sheet, said end webs bounded by a closed curve and extending between a row of end openings, said end openings being larger than said apertures;  
 having a plurality of holes, each of said holes having a diameter smaller than the diameter of said apertures and sufficiently small that opposed edges of said holes will be in simultaneous contact with its respective indentation to retain said planar support material against transverse displacement when said sheet of planar material is overlaid on said mesh;  
   overlaying one of said sheets of planar material on said mesh such that said portions of said indentations protrude through said apertures;    welding a plurality of elongated wires along respective rows of said protruding portions of said indentations to thereby sandwich said planar material between said mesh and said elongated wires;    folding and securing each of said end webs over onto itself around a common one of said elongated wires; and,    shearing said mesh into sheets of lath.    
   
   
       16 . The method of  claim 15  wherein said step of providing a mesh comprises providing a mesh of longitudinal and transverse wires welded together at their intersections substantially in a plane, wherein groups of said longitudinal wires are spaced from one another by a first amount and said longitudinal wires within each group are spaced from another by a second amount that is greater than said first amount to provide gaps between said groups and such that when said step of forming rows of indentations is said transverse wires is performed, said groups are drawn toward one another to substantially eliminate said gap.  
   
   
       17 . A wire fabric lath comprising: 
 a mesh formed from a plurality of longitudinal wires and a plurality of transverse wires arranged to form a mesh having a plurality of cells, said mesh having at least two opposed ends, each end being defined by a row of cells sharing at least one common longitudinal wire;    a planar layer of material having a plurality of apertures with webs therebetween, said material being interwoven with said mesh;    said material having two opposed ends each being defined by a row of end webs extending between a plurality of openings, at least one of said end webs being folded over and around a common longitudinal wire and being secured back onto itself about said common longitudinal wire.    
   
   
       18 . The wire fabric lath of  claim 17  wherein each of said end webs is folded over and around a common longitudinal wire and each of said end webs is secured back onto itself about its respective common longitudinal wire.  
   
   
       19 . The wire fabric lath of  claim 17  wherein said openings at said ends of said material define apertures bounded by a closed curve prior to said end webs being folded over.  
   
   
       20 . The wire fabric lath of  claim 17  wherein said openings at said ends of said material define unclosed gaps along an edge prior to said end webs being folded over.  
   
   
       21 . The wire fabric lath of  claim 17  wherein said openings are larger than said apertures.  
   
   
       22 . Welded wire lath comprising: 
 a mesh formed from a plurality of longitudinal wires and a plurality of transverse wires, said longitudinal wires and said transverse wires being welded at their intersections to form a mesh having a plurality of cells, said mesh having at least two opposed ends, each end being defined by a row of cells sharing at least one common longitudinal wire;    said transverse wires having indentations at spaced intervals, and longitudinal retaining wires being welded to said indentations to form rows of indentations coinciding with said longitudinal retaining wires;    a planar barrier layer of material having a plurality of apertures with webs therebetween, said material being interwoven with said mesh, said indentations extending through said apertures, and said longitudinal retaining wires spanning portions of said webs to retain said material to said mesh; and,    said apertures being circular.    
   
   
       23 . The lath of  claim 22  wherein the apertures along at least one longitudinal row of indentations are sufficiently small that opposed edges of the apertures are in simultaneous contact with said indentation to retain said material against transverse displacement.  
   
   
       24 . The lath of  claim 22  wherein a plurality of first longitudinal rows of said apertures are of a first size and at least one second longitudinal row of said apertures are of a second size that is smaller than said first size.