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Current codes Last updated September 21, 2026
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C-35 — Lathing & Plastering

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A C-35 Lathing and Plastering license authorizes applying wet-mixed coatings — stucco, gypsum plaster, or lime plaster — to interior and exterior surfaces, plus installing the lath and framing those coatings adhere to, under 16 CCR §832.35. Read the complete C-35 exam guide for requirements and exam structure.

C-35’s boundary with C-8 Concrete is spelled out in the C-8 regulation itself (16 CCR §832.08), which explicitly excludes contractors whose sole business is applying plaster or stucco — a concrete contractor builds the wall, a C-35 plasterer coats it. EIFS/synthetic-stucco systems from manufacturers like Dryvit and Parex often require their own separate installer certification on top of the state license.

Course Content

Start Here — How This Exam Is Built
Planning and Estimating — 15% of the Exam
Lath Preparation and Installation — 20% of the Exam
Plaster/Stucco Preparation and Installation — 28% of the Exam
Repairs — 17% of the Exam
Safety — 20% of the Exam
Code Reference & General Knowledge
Exam Day
C-35 — Lathing & Plastering — Exam 1
C-35 — Lathing & Plastering — Exam 2
C-35 — Lathing & Plastering — Exam 4
C-35 — Lathing & Plastering — Exam 3
C-35 — Lathing & Plastering — Exam 5