Expanded Metal Lath Mesh: Premium Reinforcement for Plaster, Stucco & Construction
ANPING METAL MESH – Professional Metal Mesh Manufacturing Since 2005
Expanded metal lath mesh is a lightweight, high-strength construction material made from galvanized or stainless steel sheets, expanded to form a uniform diamond pattern designed to reinforce plaster, stucco, concrete, and mortar coatings on walls, ceilings, and exterior surfaces. As a professional manufacturer with 20+ years of experience, we produce construction-grade expanded metal lath that meets international building standards for strength, adhesion, and corrosion resistance.
What Is Expanded Metal Lath Mesh?
Expanded metal lath mesh is a flexible, self-furring construction reinforcement material created by slitting and expanding thin-gauge steel sheets into a rigid diamond mesh structure. The unique raised rib design provides superior mechanical keying for plaster, stucco, and cement mortars, preventing cracking, shrinking, and delamination over time.
Our expanded metal lath mesh is available in standard sheets and rolls, with galvanized and stainless steel material options to suit interior, exterior, and corrosive environments. It is the preferred reinforcement choice for professional plasterers and contractors worldwide.
Standard Specifications of Expanded Metal Lath Mesh
| Specification Item |
Standard Range |
Unit |
| Material Thickness |
0.3 – 0.6 |
mm |
| Diamond Opening |
10×20 – 16×32 |
mm |
| Sheet Size |
600×2400, 900×2400 |
mm |
| Roll Size |
1000mm × 10m / 25m |
mm × m |
| Material |
Hot-dip galvanized steel, 304 stainless steel |
— |
| Weight |
0.9 – 1.5 |
kg/m² |
These specifications ensure easy handling, fast installation, and maximum bonding strength with plaster and stucco materials. Custom sizes and thicknesses are available through our custom expanded metal service for specialized construction projects.
Material Options for Expanded Metal Lath Mesh
Hot-Dip Galvanized Steel Lath: The most widely used and cost-effective option for general construction. The zinc coating provides excellent rust and corrosion resistance, making it suitable for most interior and exterior walls, ceilings, and stucco systems. It offers a 10+ year service life in normal environmental conditions.
304 Stainless Steel Lath: Premium-grade lath for high-humidity, coastal, or corrosive environments such as swimming pools, coastal buildings, chemical facilities, and food processing plants. Stainless steel lath provides maximum rust resistance and long-term durability, with a lifetime service life in most conditions.
Core Advantages of Expanded Metal Lath Mesh
Superior Bonding Strength: Diamond pattern and raised ribs create maximum mechanical keying for plaster
One-Piece Structure: No welds or joints, eliminating breakage and weak points
Excellent Flexibility: Conforms to curved, rounded, and irregular wall surfaces
Self-Furring Design: Maintains proper spacing for full plaster encapsulation
Corrosion Resistance: Galvanized and stainless options prevent rust and degradation
Lightweight & Easy Install: Reduces labor time and installation costs
Crack Prevention: Distributes stress to stop plaster shrinkage and cracking
Long Service Life: Durable reinforcement for permanent wall systems
Key Applications of Expanded Metal Lath Mesh
Exterior Stucco Walls: The primary application for expanded metal lath, providing reinforcement for exterior stucco systems on residential and commercial buildings. The open pattern ensures full stucco penetration and strong bonding.
Interior Plaster Walls & Ceilings: Reinforces gypsum and lime plaster on interior walls, ceilings, and partition walls, preventing cracking and improving surface durability.
Concrete & Mortar Reinforcement: Used as thin concrete reinforcement for repair projects, floor overlays, and small structural elements.
Fireproofing Systems: Supports fire-resistant coatings on structural steel columns and beams, ensuring secure adhesion of fireproofing materials.
Insulation & Cladding Support: Provides stable backing for insulation panels and exterior cladding systems, working alongside expanded metal facade decoration systems.
Installation Benefits of Expanded Metal Lath Mesh
The self-furring raised design automatically creates a uniform gap between the lath and the substrate, ensuring plaster flows completely behind and around the mesh for full encapsulation. This eliminates the need for separate furring strips and simplifies installation.
Frequently Asked Questions: Expanded Metal Lath Mesh
What is the difference between expanded metal lath and wire lath?
Expanded metal lath is a single-piece structure with no welds, offering superior strength and bonding. Wire lath is welded together and can break at joints. Expanded lath provides better plaster keying and longer service life for professional applications.
Which material is best for exterior stucco use?
Hot-dip galvanized expanded metal lath mesh is the standard choice for exterior stucco, providing excellent rust resistance at an economical cost. For coastal or high-corrosion areas, 304 stainless steel lath is recommended for maximum durability.
Can expanded metal lath be used on curved walls?
Yes! Our expanded metal lath mesh is highly flexible and easily conforms to curved surfaces, arches, columns, and irregular architectural features, making it ideal for decorative and custom wall designs.
What sizes do you offer for expanded metal lath?
We offer standard sheets (600×2400mm, 900×2400mm) and rolls (1m width × 10m/25m length). Custom sizes and thicknesses are available through our
custom expanded metal manufacturing service for unique project requirements.
Is expanded metal lath fire-resistant?
Yes. Galvanized and stainless steel expanded metal lath is non-combustible and is widely used to reinforce fireproofing coatings on structural steel and wall assemblies, supporting fire safety ratings in buildings.
How to install expanded metal lath mesh?
Secure lath to the substrate using corrosion-resistant fasteners, overlapping edges by 25mm. The self-furring design creates proper plaster spacing. Apply plaster directly over the lath, ensuring full penetration into the diamond openings.
Do your lath products meet international construction standards?
Absolutely. All our expanded metal lath mesh complies with ASTM C847, EN 10142, and other international building codes. We provide certification and compliance documents for commercial and industrial construction projects.
Quality Control & Construction Certifications
Our galvanized lath undergoes rigorous zinc coating testing to ensure long-term rust resistance, while stainless steel lath is verified for alloy composition and corrosion performance. Automated production lines guarantee consistent diamond patterns and rib height across all products.
China expanded metal mesh manufacturer and trusted expanded metal mesh facade supplier, we deliver construction materials that meet the highest quality and safety standards for global building projects.
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Standard & custom sizes | galvanized & stainless steel | fast global shipping | contractor-grade quality
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