Which statement about stucco netting backing is correct?

Which statement about stucco netting backing is correct?

• A. Backings may be unattached
• B. Backings must be securely attached
• C. Backings are optional
• D. Netting has no backing

Answer: (B)

Backings must be securely attached to provide a stable, anchored base for the reinforcing mesh and the plaster that goes over it. When the backing is firmly fastened to the substrate, the netting stays in place during plaster application and curing, which helps prevent movement, cracking, and delamination. A securely attached backing also helps the plaster key properly to the surface and resists wind-driven moisture and other stresses that can cause failure over time. If the backing were loose or unattached, the netting could shift or sag, the plaster wouldn’t bond consistently, and cracks or debonding could occur. Backing behind the netting is not optional, and netting is not used by itself without a proper, secure backing.

Backings must be securely attached to provide a stable, anchored base for the reinforcing mesh and the plaster that goes over it. When the backing is firmly fastened to the substrate, the netting stays in place during plaster application and curing, which helps prevent movement, cracking, and delamination. A securely attached backing also helps the plaster key properly to the surface and resists wind-driven moisture and other stresses that can cause failure over time.

If the backing were loose or unattached, the netting could shift or sag, the plaster wouldn’t bond consistently, and cracks or debonding could occur. Backing behind the netting is not optional, and netting is not used by itself without a proper, secure backing.