What Is Expanded Metal Lath for Plastering?

Expanded metal lath for plastering is a specially designed ribbed metal mesh sheet made by slitting and expanding galvanized or stainless steel into a uniform diamond pattern. It is attached to walls, ceilings, and structural surfaces to create a rigid, high-strength base that mechanically locks plaster, render, or stucco in place.

Unlike paper, fiberglass, or plastic mesh, metal lath provides structural reinforcement that prevents plaster from cracking, shrinking, hollowing, or detaching over time. The raised ribs and diamond openings create a “plaster key” that allows mortar to fully penetrate and bond with the lath.

This product is the industry standard for interior plastering, exterior stucco, EIFS insulation systems, ceiling plastering, curved surfaces, and repair work. It is suitable for use on wood framing, metal studs, masonry walls, and concrete surfaces.

Our expanded metal lath is flexible enough to form around arches and columns while remaining rigid enough to support heavy plaster coats—making it the most versatile reinforcement solution in the plastering industry.

Key Specifications of Plastering Expanded Metal Lath

Our expanded metal lath for plastering is manufactured to strict British, European, and American standards. Below are the professional-grade specifications preferred by plasterers and contractors:

The self-furring rib design is critical for plastering—it lifts the lath 1/8” (3mm) off the surface, allowing plaster to flow behind the mesh and create a permanent mechanical bond. Full details are available in our metal mesh product catalog.

Our lath is also available in convenient rolls for large projects, reducing installation time and waste. All products are corrosion-resistant and designed to last the lifetime of the plaster system.

Why Use Expanded Metal Lath for Plastering?

Professional plasterers exclusively use expanded metal lath for its unmatched performance benefits over alternative reinforcement materials:

Superior Plaster Bonding – Diamond pattern and ribs create an interlock with plaster, eliminating delamination and hollow spots.

Crack Prevention – Distributes stress across the entire surface, stopping cracks from forming or spreading.

Structural Strength – Adds rigidity to walls and ceilings, resisting impact and structural movement.

Versatility – Bends to fit curved walls, arches, columns, and irregular surfaces without breaking.

Longevity – Galvanized and stainless steel lath will not rot, rust (quickly), or degrade like organic mesh.

Easy Installation – Lightweight, easy to cut with tin snips, and simple to fasten with screws or staples.

Code Compliance – Meets building code requirements for fire resistance, plaster thickness, and structural support.

Types of Expanded Metal Lath for Plastering

We offer two primary types of expanded metal lath for plastering, each designed for specific applications and environments:

• Hot-Dip Galvanized Expanded Lath – The most popular choice for interior plastering and exterior stucco. Economical, corrosion-resistant, and perfect for standard environments.
• Stainless Steel Expanded Lath – Premium grade for damp areas, coastal locations, food-grade facilities, and high-end projects. 100% rust-proof and long-lasting.

Both types are available in sheets and rolls. For heavy-duty commercial plastering, we offer thicker-gauge lath that provides extra strength for high-traffic areas and thick plaster coats.

For small-hole applications, our small hole expanded metal mesh is ideal for fine-finish plastering and thin-coat render systems.

Step-by-Step Installation Guide for Plastering Lath

Follow this professional installation process to achieve perfect results with expanded metal lath for plastering:

Step 1: Surface Preparation – Clean the surface and ensure framing studs are spaced 16–24 inches apart for proper support.

Step 2: Cutting Lath – Cut lath to size using tin snips. Always wear gloves to protect against sharp edges.

Step 3: Attaching Lath – Secure lath to studs using screws or staples every 6 inches on edges and 8 inches in the field. Overlap sheets by 1 inch.

Step 4: Corner Installation – Wrap lath around corners continuously to create strong, crack-free corners.

Step 5: Plaster Application – Apply scratch coat first, pressing plaster firmly into the lath openings. Follow with brown coat and finish coat.

Proper installation ensures the lath remains rigid and provides maximum reinforcement for a durable, long-lasting plaster surface.

Common Applications of Expanded Metal Lath for Plastering

Our expanded metal lath is used in nearly every type of plastering and construction project:

• Interior Wall & Ceiling Plastering
• Exterior Stucco & EIFS Systems
• Curved Wall & Arch Reinforcement
• Fireproofing for Steel Beams
• Bathroom & Kitchen Wet Wall Plastering
• Concrete Overlay Reinforcement
• Historic Building Restoration
• Under-Tile Plaster Base

It is also widely used as a base for artificial stone, veneer, and brick slips—making it one of the most versatile products in construction.

Our Advantages as a Professional Plaster Lath Manufacturer

When you choose Anping Metal Mesh for your expanded metal lath for plastering, you benefit from decades of metal mesh manufacturing expertise:

Professional-Grade Quality – Our lath is designed for professional plasterers, with consistent rib height and diamond pattern.

Self-Furring Design – Automatically creates the perfect plaster gap without furring strips.

Corrosion Resistance – Hot-dip galvanized coating ensures long-term protection against rust.

Factory-Direct Pricing – Wholesale prices with no middleman markup for bulk buyers.

Custom Sizes – Manufacture sheets and rolls to your exact project dimensions.

Global Shipping – Reliable delivery to construction sites worldwide.

Quality Standards & Certifications

Our expanded metal lath for plastering complies with all major international construction standards:

• ASTM C847 – Standard Specification for Metal Lath
• EN 10142 – European Standard for Galvanized Steel
• BS 1369 – British Standard for Metal Plastering Lath
• ISO 9001 Certified Manufacturing Process

Every batch is inspected for thickness, galvanizing adhesion, rib height, and dimensional accuracy before shipment. We guarantee consistent quality for every project.

As a professional expanded metal mesh facade supplier and construction mesh manufacturer, we uphold the highest quality standards for all building products.

How to Order Expanded Metal Lath for Plastering

Ordering your plastering lath from us is simple and efficient:

1. Select material (galvanized or stainless steel)
2. Choose sheet or roll format
3. Specify dimensions and quantity
4. Provide delivery destination
5. Receive your detailed quote within 2 hours

We offer fast production, flexible order quantities, and reliable global shipping. Whether you need a small batch or a full container load, we provide competitive pricing and professional service.