Which coat is applied immediately after the bonding coat in the typical plastering sequence?

Study for the California Lathing and Plastering Contractor (C-35 License) Exam. Prepare with flashcards and multiple choice questions, each offering hints and explanations. Excel in your exam with confidence!

Multiple Choice

Which coat is applied immediately after the bonding coat in the typical plastering sequence?

Explanation:
The first layer after a bonding coat is the scratch coat. In plastering, the bonding coat sticks to the substrate, but it needs a rough, keyable surface for the next layer to grab onto. The scratch coat provides that key by giving a rough, irregular surface that the subsequent coats can adhere to more securely. After the scratch coat is applied (and scored or scratched to create the key), the brown coat is built up for thickness and final shaping, and the finish coat then provides the final smooth surface. The cure stage isn’t a coat in the plastering sequence.

The first layer after a bonding coat is the scratch coat. In plastering, the bonding coat sticks to the substrate, but it needs a rough, keyable surface for the next layer to grab onto. The scratch coat provides that key by giving a rough, irregular surface that the subsequent coats can adhere to more securely. After the scratch coat is applied (and scored or scratched to create the key), the brown coat is built up for thickness and final shaping, and the finish coat then provides the final smooth surface. The cure stage isn’t a coat in the plastering sequence.

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