Welded-wire fabric lath can be applied to which surfaces?

Welded-wire fabric lath can be applied to which surfaces?

• A. Interior surfaces only
• B. Interior and protected horizontal exterior surfaces
• C. Exterior vertical surfaces only
• D. All surfaces including unexposed fences

Answer: (B)

Welded-wire fabric lath serves as a sturdy backing for plaster, and its use is guided by exposure to weather. It provides a solid base where moisture exposure is limited, which is why it’s used on interior surfaces and on exterior surfaces that are protected from direct rain (horizontal exterior surfaces under eaves or other shelter). Exterior vertical surfaces exposed to weather can lead to corrosion and plaster problems, so this type of lath isn’t typically used there. Unexposed fences aren’t a standard plaster base, so they aren’t appropriate for welded-wire fabric lath. That’s why interior and protected horizontal exterior surfaces are the appropriate applications.

Welded-wire fabric lath serves as a sturdy backing for plaster, and its use is guided by exposure to weather. It provides a solid base where moisture exposure is limited, which is why it’s used on interior surfaces and on exterior surfaces that are protected from direct rain (horizontal exterior surfaces under eaves or other shelter). Exterior vertical surfaces exposed to weather can lead to corrosion and plaster problems, so this type of lath isn’t typically used there. Unexposed fences aren’t a standard plaster base, so they aren’t appropriate for welded-wire fabric lath. That’s why interior and protected horizontal exterior surfaces are the appropriate applications.