Integrating bespoke Venetian plaster and lime finishes into commercial and residential construction projects requires clear specification writing under **CSI MasterFormat Section 09 94 00 (Decorative Finishes)** or **09 25 13 (Lime Plastering)**.

1. Substrate Specification (Level 5 Impermeability)

The most common point of failure on job sites is inadequate drywall preparation. Architects must explicitly specify:

  • **Substrate Standard:** Drywall finished to **ASTM C840 Level 5** (skim coated smooth across all joints and paper face).
  • **Substrate Flatness:** Maximum 1/8-inch tolerance per 10 linear feet.
  • **Keying Primer:** Acrylic quartz mineral primer applied 24 hours prior to plaster basecoat.

    • 2. On-Site Mock-Up Board Approvals (CSI Section 01 43 36)

    Due to the organic, hand-troweled nature of Italian lime plasters, specifications should mandate a 4' x 4' physical mock-up panel completed on-site by the designated master applicator prior to full project execution. The mock-up panel serves as the binding quality standard for sheen level, color tint, texture variation, and wax protection.

    3. Submittal Checklist for Architectural Specifications

    1. **Manufacturer Data Sheets:** Technical specification sheets for pit-aged slaked lime, marble aggregate size, and VOC ratings.

    2. **Environmental Certifications:** Zero VOC, A+ French VOC emissions compliance, and LEED v4 credits for Indoor Environmental Quality.

    3. **Applicator Qualification Requirements:** Minimum 5 years of verified experience in luxury artisan plaster application.