Exterior finishing system and building wall containing a corrosion-resistant enhanced thickness fabric and method of constructing same
First Claim
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1. A building wall comprising:
- a building wall substrate;
a corrosion-resistant woven lath attached to said substrate, said lath comprising warp and weft yarns comprising non-metallic fibers, wherein at least a portion of said weft yarns are undulated when viewed in the plane of the fabric and wherein said lath has a thickness of at least about 0.125 inches (3.175 mm); and
a stucco matrix applied to said lath.
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Abstract
A corrosion-resistant lath is provided for use in exterior finishing systems, such as stucco systems and exterior insulation and finish systems (“EIFS”). The lath includes in a first embodiment an open, woven fabric comprising weft and warp yarns containing non-metallic fibers, such as glass fibers. A portion of the weft yarns are undulated, resulting in an increased thickness for the fabric. The fabric is coated with a polymeric resin for substantially binding the weft yarns in the undulated condition. This invention also includes methods for making an exterior finish system and building wall including an exterior finish system using such a lath.
124 Citations
18 Claims
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1. A building wall comprising:
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a building wall substrate; a corrosion-resistant woven lath attached to said substrate, said lath comprising warp and weft yarns comprising non-metallic fibers, wherein at least a portion of said weft yarns are undulated when viewed in the plane of the fabric and wherein said lath has a thickness of at least about 0.125 inches (3.175 mm); and a stucco matrix applied to said lath. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of constructing a building wall comprising:
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(a) affixing a substrate to a frame; (b) optionally disposing a secondary weather barrier over said substrate; (c) optionally disposing a layer of insulation over said weather barrier or said substrate; (d) affixing a corrosion resistant lath over said substrate, or secondary weather barrier, if present, or said insulation layer, if present, said lath comprising a corrosion-resistant woven fabric comprising warp and well yarns comprising non-metallic fibers, wherein at least a portion of said weft yarns are undulated when viewed in the plane of the fabric and wherein said lath has a thickness of at least about 0.125 inches (3.175 mm); (e) applying at least a first stucco layer to said lath; and (f) permitting said stucco layer to set to form a hard protective finish.
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18. A building wall comprising:
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a building wall substrate; an insulation board attached to the substrate; a base coat applied to the insulation board; a reinforcing mesh comprising warp and weft yarns comprising non-metallic fibers, wherein at least a portion of said well yarns are undulated when viewed in the plane of the mesh fabric and wherein said lath has a thickness of at least about 0.125 inches (3.175 mm); and a finish coat applied to said reinforcing mesh, wherein the reinforcing mesh is substantially embedded within the base coat and the finish coat.
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Specification