Conerite lath should be installed after weather protection is in place; which statement is correct?

Conerite lath should be installed after weather protection is in place; which statement is correct?

• A. This condition must be met before installation
• B. It can be installed during weather protection
• C. It is unrelated to weather protection
• D. It should be installed only after final plaster set

Answer: (A)

Weather protection is needed to keep the lath and the plaster bedding dry and stable as the system is being installed and cured. Conerite lath acts as the key for the plaster, so it must be set on a dry, protected surface. If the lath is installed before weather protection is in place, moisture from rain or damp conditions can reach the lath and substrate, leading to rust, warping, reduced keying, and poor plaster adhesion. By having weather protection in place first, you create a consistent, dry environment that helps ensure proper bonding and curing of the plaster. Installing during weather exposure or after the plaster has set would expose the work to conditions that can compromise the finished system, and treating weather protection as unrelated isn’t accurate for plastering practice.

Weather protection is needed to keep the lath and the plaster bedding dry and stable as the system is being installed and cured. Conerite lath acts as the key for the plaster, so it must be set on a dry, protected surface. If the lath is installed before weather protection is in place, moisture from rain or damp conditions can reach the lath and substrate, leading to rust, warping, reduced keying, and poor plaster adhesion. By having weather protection in place first, you create a consistent, dry environment that helps ensure proper bonding and curing of the plaster. Installing during weather exposure or after the plaster has set would expose the work to conditions that can compromise the finished system, and treating weather protection as unrelated isn’t accurate for plastering practice.