Block Work Mesh for Crack Prevention in Concrete & Masonry Walls

Block work mesh is an anti-crack reinforcement material made from expanded metal, designed to enhance the tensile strength of brick and block masonry. When embedded in mortar joints, it forms a continuous, joint-free reinforcement layer that effectively resists stress, vibration, and thermal expansion/contraction, minimizing cracking. Typically installed at every other layer and positioned approximately 25 mm from the wall surface, it is suitable for general wall construction as well as stress-prone areas such as door and window openings.

Block work lath

Type

Strip lath: A flat expanded metal strip used for plaster reinforcement at joints between solid substrates or connections of dissimilar substrates. It offers flexible application on irregular surfaces.
Coil lath: Made from galvanized steel sheet with diamond-shaped openings, and then coiled by a winding machine, it is widely used as a stucco underlayment for crack prevention and in large-area plastering projects.

Strip lath

Coil lath

Specification

Material: Galvanized steel, stainless steel
Mesh type: Diamond expanded mesh
Width: 150 mm, 200 mm
Length: Strip type: 2500 mm; Roll type: 50 m
Weight: 0.6–2.0 kg/m²
Form: Strip/Roll

Table 1: Specification of Strip Lath
Model	Mesh Size W x L (mm)	Weight (kg/m²)	Packing Pcs./Bundle	Materials
SL-1	150 × 2500	0.91	10	Galvanized steel, stainless steel
SL-2		1.10
SL-3		1.61
SL-4		1.85
SL-5	200 × 2500	2.00
SL-6		0.91
SL-7		1.10
SL-8		1.61
SL-9		1.85

Table 2: Specification of Coil Lath
Model	Weight (kg/m²)	Coil Width (mm)	Coil Length (m)	Materials
CL-1	0.60	150	50	Galvanized steel, stainless steel
CL-2	0.60	200
CL-3	0.91	150
CL-4	0.91	200
CL-5	1.11	150
CL-6	1.11	200
CL-7	1.61	150
CL-8	1.61	200
CL-9	1.85	150
CL-10	1.85	200
CL-11	2.00	150
CL-12	2.00	200

Features

Crack prevention & reinforcement. It effectively prevents wall cracking and enhances structural stability.
Flexible installation. it adapts to curved and irregular surfaces.
High corrosion resistance. Galvanized coating provides rustproof durability, extending service life.
Lightweight & easy to apply. It reduces labor intensity and improves work efficiency.

Application

Block work mesh is widely used in brick and block walls as an anti-crack reinforcement material. By embedding it in mortar joints, it enhances the structure's tensile strength and prevents cracking caused by stress concentration, temperature variations, or vibration.

Strip lath is a type of block work lath designed for joint connection areas.

Strip lath being applied at connection joints

Coil lath is a type of block work lath used for substrate reinforcement.

Coil lath being installed as substrate reinforcement between red brick

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