Coil lath is a high-quality expanded mesh used primarily as an anti-cracking reinforcement in brick, block masonry, and plaster applications. It serves as a mechanical base for plaster or stucco, providing a keying surface for the wet materials to adhere securely. This reinforcement is especially useful at joints of dissimilar materials, such as where different wall sections meet.
It typically comes in rolls (coils) of varying widths and lengths to easily fit project requirements.