High Strength Rib Lath, Suitable for Plastering & Stucco Construction

Rib lath is made from galvanized (or stainless) steel strips that are slit, expanded, and drawn by specialized machinery, featuring V-shaped ribs for enhanced tensile strength. The longitudinal ribs ensure a consistent plaster depth over large and deep surfaces. It is widely used as a base for plastering and stucco construction on walls and suspended ceilings.

Rib lath

Type

Rib lath without paper: A type of expanded metal lath with longitudinal reinforcing ribs, used to enhance the strength and support of plaster systems. Common specifications include 1/8" flat rib lath for general use, 3/8" high rib lath for medium loads, and 7/8" high rib lath for heavy-duty applications. It is widely used for plastering work on masonry, wood, or metal structure walls and ceilings.
Paper backed rib lath: A high-strength metal lath with a kraft paper backing, designed to reduce plaster loss on open structures. It is suitable for plastering applications that require stronger support and better coverage.

Rib lath without paper

Paper backed rib lath

Specification

Material (Conforming to ASTM A653/A653M): Galvanized steel ( or stainless steel)
Weights: 2.75–6.70 lbs./yd², 1.48–3.60 kg/m²
Mesh size: 11 × 17 mm, 8.34 × 3.11 mm, 11.2 × 5.5 mm, 9.5 × 7.2 mm
Sheet size: 27" × 97"
Packaging:
- 10 pieces per bundle
- 25 bundles per pallet

Table 1: Specification of Rib Lath
Model	Weight		Mesh Size	Sheet Size	Packing
Model	lbs./yd²	kg/m²	mm	inch	Pcs./Bundle	Bundles/Pallet
RL-2.75	2.75	1.48	11 × 17	27 × 97	20	25
RL-4.28	4.28	2.32	8.34 × 3.11
RL-3.40	3.40	1.83	11.2 × 5.5
RL-6.70	6.70	3.60	9.5 × 7.2
RL-6.10	6.10	3.30	9.5 × 7.2

Features

High strength and flexibility. V-shaped ribs enhance overall rigidity, allowing the lath to withstand concrete pouring pressure and distribute stress, preventing structural cracking.
Excellent permeability. It facilitates even application and firm bonding of plaster or mortar.
Durability. Made from galvanized or stainless steel, it is corrosion resistant and suitable for humid environments and outdoor projects.
Versatility. It functions both as formwork support and permanent structural reinforcement, with a no-removal design that saves labor time.

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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