Size of Expanded Metal Lath: Complete Standard & Custom Sizes Guide 2025
What Determines the Size of Expanded Metal Lath?
The size of expanded metal lath refers to two key measurements: the **physical sheet/roll dimensions** and the **diamond mesh opening size**. Both dimensions are standardized by international building codes (ASTM C847, EN 13658) to ensure compatibility with stucco, plaster, and masonry applications.
Standard expanded metal lath sizes are designed for easy handling, transportation, and installation on walls, ceilings, columns, and curved surfaces. Manufacturers produce lath in fixed sizes to reduce waste and ensure consistency across construction projects worldwide.
Our lath follows both US standard and metric sizes, making it suitable for residential, commercial, and industrial construction projects globally. For ultra-fine applications, our small hole expanded metal mesh provides precision reinforcement for thin plaster layers.
Standard Sheet Sizes of Expanded Metal Lath
Expanded metal lath is primarily manufactured in **sheet form** (rigid panels) and **roll form** (flexible for large surfaces). Below are the most widely used standard sizes recognized in the US, Europe, and international markets.
| Product Type | Standard Size (Imperial) | Metric Size | Coverage Area |
|---|---|---|---|
| Standard Lath Sheet | 27" × 96" | 686mm × 2440mm | 18 sq ft (1.67 sq m) |
| Heavy-Duty Lath | 36" × 96" | 914mm × 2440mm | 24 sq ft (2.23 sq m) |
| Self-Furring Lath | 27" × 96" | 686mm × 2440mm | 18 sq ft (1.67 sq m) |
| Lath Roll | 27" × 10ft / 27" × 50ft | 686mm × 3m / 686mm × 15m | 225 / 1125 sq ft |
The 27”×96” sheet is the **universal industry standard** for stucco and plaster reinforcement, as it fits standard wall stud spacing and is easy for contractors to handle. Rolls are used for large commercial projects to reduce installation time and seams.
Standard Diamond Mesh Opening Sizes
The mesh opening size of expanded metal lath is critical for mortar bonding and structural strength. All standard lath uses a fixed diamond pattern to ensure proper plaster penetration and mechanical locking.
Standard Lath Opening Dimensions
The most common expanded metal lath mesh size is **3/8" × 9/16" (10mm × 14mm)** – the industry default for exterior stucco and interior plaster. This opening size balances strength, weight, and mortar adhesion perfectly.
Other standard opening sizes include 1/2" × 1" (12mm × 25mm) for heavy-duty concrete reinforcement and 1/4" × 3/8" (6mm × 10mm) for thin-coat plaster systems. All openings are formed with precision expansion to ensure consistency across every sheet.
Standard Thickness & Weight of Expanded Metal Lath
Thickness and weight directly impact the strength and durability of expanded metal lath. Standard sizes follow fixed gauge and weight specifications to meet building code requirements.
| Lath Type | Thickness (Gauge) | Weight Per Sheet | Application |
|---|---|---|---|
| Standard Lath | 0.5mm (26 GA) | 2.2 lbs (1.0kg) | General Stucco/Plaster |
| Self-Furring Lath | 0.6mm (24 GA) | 2.7 lbs (1.2kg) | Exterior Stucco |
| Heavy-Duty Lath | 0.8mm (22 GA) | 3.5 lbs (1.6kg) | Concrete/Structural |
Most building codes require a **minimum 26 gauge (0.5mm)** thickness for standard lath. Self-furring lath (with ribs) is slightly thicker to maintain its shape and provide a 1/4” mortar gap behind the lath.
Custom Sizes of Expanded Metal Lath
We offer full customization for the size of expanded metal lath to meet unique project requirements, including non-standard sheets, extra-wide rolls, and special opening dimensions.
- Custom Sheet Sizes: Cut to any width and length for prefabricated walls
- Custom Roll Lengths: 10ft, 50ft, 100ft, and custom continuous rolls
- Special Opening Sizes: Fine mesh for thin plaster or large mesh for heavy concrete
- Custom Thickness: From 0.4mm (ultra-light) to 1.2mm (heavy-duty)
- Material Customization: Galvanized, stainless steel (304/316), and aluminum lath
Our custom expanded metal fabrication team provides free CAD design support to optimize your lath size for minimal waste and maximum performance. We serve custom orders for small residential projects and large-scale commercial developments.
How to Choose the Right Size of Expanded Metal Lath
Selecting the correct lath size depends on your application, plaster thickness, wall type, and environmental conditions. Follow these industry best practices to make the right choice.
For **standard exterior stucco**: Use 27”×96” self-furring lath with 3/8”×9/16” openings and 24ga thickness. For **interior plaster**: Standard 26ga lath is sufficient. For **coastal or concrete projects**: Upgrade to 316 stainless steel lath in heavy-duty thickness.
Always overlap lath sheets by 1” (25mm) vertically and horizontally to create a continuous reinforcement surface. Standard sizes are designed to minimize waste when installed on 16” or 24” stud spacing.
FAQs: Size of Expanded Metal Lath
What is the most common standard size of expanded metal lath?
What is the standard thickness for stucco lath?
Can I get expanded metal lath in custom sizes?
What size opening is best for plaster adhesion?
Do you offer metric-sized expanded metal lath?
What is the difference between lath sheets and rolls?
What size lath do I need for curved walls?
Is expanded metal lath size regulated by building codes?
Our Quality & Manufacturing Standards
We manufacture expanded metal lath using automated high-precision equipment to ensure every sheet meets exact standard sizes. Our production process guarantees consistent opening dimensions, sheet flatness, and thickness across all orders.
Our green manufacturing process reduces material waste and energy consumption, while our strict quality control system inspects every sheet for dimensional accuracy and material integrity. We are ISO 9001 certified and meet all international building code requirements.
We provide material certification, size specifications, and test reports with every order. Our global logistics network ensures fast, reliable shipping of standard and custom-sized lath to construction sites worldwide. Explore our full product range in our online product catalog.
Why Choose ANPING METAL MESH for Expanded Metal Lath Sizes
With 20+ years of specialized manufacturing experience, we are the global leader in standard and custom-sized expanded metal lath. Our commitment to accurate sizing, quality materials, and customer service makes us the top choice for contractors and architects worldwide.
- Strict adherence to international standard sizes of expanded metal lath
- Full customization for unique project dimensions and requirements
- Premium galvanized and 304/316 stainless steel materials
- Factory-direct pricing with no middleman markup
- Fast global shipping to 50+ countries
- Free samples, size guides, and technical support
- ISO 9001 certified quality and green manufacturing
- 20+ years of construction industry expertise
We understand that accurate sizing is critical for construction efficiency and cost savings. Our expanded metal lath is manufactured to the tightest tolerances to ensure perfect fit and performance on every project.