Sheet Metal Lath for Stucco and Plaster Reinforcing
Stucco, plaster and veneer would easily crack under types of stress and deflation in the process of building construction and residential living. Metal lath is used to prevent or decrease wall crackings in either pumped or troweled application. Sheet metal lath is slit and expanded into small diamond openings (approximately 11,000 per square yard).
We supply sheet metal lath in two types: diamond metal lath and rib meta lath. Flat diamond metal lath is nor used over solid surface like gypsum, concrete and wood sheathing. Because flat sheet will only cause the stucco to bond only to the sheathing and not complete the embedding process. Therefore expanded metal mesh is usually self-furred: dimpled and V-grooved. Diamond metal lath, for its unravel feature, is especially suitable for high strength needed architectures. Rib metal lath is expanded metal made sheet with ribs to increase the strength of it overall structure. Strip lath and corner lath are also available for installation convenience.
Diamond Metal LathFlat diamond metal lath could only bond to the sheathing but not complete the embedding process for covering a solid surface like gypsum, concrete and wood sheathing. Therefore self-furring metal lath came into being. Self-furred diamond metal lath is generally used as reinforcement of plaster for solid surface. And it is divided into two types: dimpled and V-grooved. The two kinds of diamond metal lath is showed below in DML-01 and DML-02.

SML-05: diamond metal lath
LWD: 17.7 mm, SWD: 8.3 mm.
Specification
Material (conforming to ASTM A653/A653M):
G60 hot-dipped galvanized steel, G90 is available upon special request;
G60 cold-rolled galvanized steel;
Zinc alloy and vinyl coated.
Weights (per sq. yd.):
1.75 lbs./sq. yd.;
2.5 lbs./sq. yd.;
3.4 lbs./sq. yd.
Mesh size: 5/16" × 9/16", 6/16" (8.3 mm) × 3/4" (17.7 mm).
Thickness:
Standard diamond metal lath: 1/8".
Depth of dimples and grooves: 1/4".
Overall depth of the lath: 5/16" (7.9 mm).
Sheet size: 27" × 96".
Number of grooves per sheet: 5.
Weights per bundle:
35 lbs./bdl (for 1.75 lbs./sq. yd.);
50 lbs./bdl (for 2.5 lbs./sq. yd.);
68 lbs./bdl (for 3.4 lbs./sq. yd.).
Packaging: 10 sheet (20 sq.yds) per bundle, 50 bundles/lift.
Application:
Dimpled and v-grooved diamond metal lath is generally used in applications over solid surfaces such as gypsum, concrete and wood sheathing block.
5/16" × 9/16" for common interior plastering, 3/8" × 3/4" for stucco work or as a support for loose fill rock wool or similar insulation.
1.75 lbs./sq. yd. lath is not recommended for open frame use other than in tested proprietary one coat systems.
Rib lath is the most rigid for all sheet metal laths for its ribs running the whole length of the sheet added additional strength. Rib metal lath is commonly used for soffits and ceilings. Two types of rib metal lath are supplied: Hi-rib lath and flat rib lath, among which the most popular type is 3/8" high rib and 3.4 lbs./sq. yd.
Flat-Rib: 1/8" for all ribs on the lath, spaced at 3" on-center. The 3" wider space is provided for wooden or metal supports. This lath is ideal for machine applied plaster, backed with 2 strips of backing papers.
Hi-Rib Lath: 1/8" rib between two 3/8" ribs, spaced 4" every pairs of 3/8" ribs. Hi-Rib lath is used primarily in horizontal applications or for framing spaced no more than 24" on center. Strips of 3" backing paper should be attached to the spaces between the 3/8" ribs in order to minimize blow through of plaster when machine applied as showed below in picture SML-09.This lath should be installed horizontally on vertical walls or ceilings.

SML-09: Strips of 3" backing paper should be attached to the spaces of 3/8" ribs with margin.
Specification
Material (conforming to ASTM A653/A653M):
Hot-dipped galvanized carbon steel;
Zinc alloy and vinyl coated.
Weights (per sq. yd.):
1.75 lbs./sq. yd.;
2.5 lbs./sq. yd.;
3.4 lbs./sq. yd.
Mesh size: 12.7 mm × 7.1 mm.
Sheet size:
27" × 96" for 1/8" & 3/8" ribs;
29" wide, 5', 10', 12' length for 3/4" rib.
Weights per bundle:
35 lbs./bdl (for 1.75 lbs./sq. yd.);
50 lbs./bdl (for 2.5 lbs./sq. yd.);
68 lbs./bdl (for 3.4 lbs./sq. yd.).
Packaging: 10 sheet (20 sq.yds) per bundle, 50 bundles per lift.
Application
Made of expanded metal, rib lath is the ideal material as a background for plaster, render, stucco application in construction of suspended ceilings partition.
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