Code of practice for the painting of non-ferrous metals in buildings, Part 2: Painting

IS 2524 Part 2: Introduction and Scope - Key Points

Scope:

• Covers painting and finishing of building materials.
• Aligns with international standards (e.g., BS CP 231:1966).
• Emphasizes proper finishing processes (see Clause 6.5 and Section 5 for finishing).

Key References for Painting and Finishing:

Important Notes:

• Final test values must be rounded per IS: 2-1960.
• Definitions of painting terms per IS: 1303-1963.
• Use SI units as per the standard (e.g., 1 N = 1 kg·m/s², 1 Pa = 1 N/m²).

SI Units Summary (Relevant for Paint & Material Properties)

flowchart LR
    A[Material Surface] --> B[Cleaning & Preparation]
    B --> C[Priming]
    C --> D[Painting/Coating]
    D --> E[Finishing (Clause 6.5)]
    E --> F[Maintenance]

This summary helps ensure compliance with IS 2524 Part 2 in painting and finishing operations by referencing essential codes, units,

IS 2524 Part 2 - Definitions and Terminology: Key Points

• Reference for Terminology:
  Definitions related to painting follow IS 1303:1963 (Clause 2.1).

• Rounding Off Results:
  Test or analysis results must be rounded as per IS 2:1960, retaining the same number of significant figures as specified (Clause 0.5).

• Schedules Covered:
  This part covers painting schedules specifically for non-ferrous metals in buildings (Clause 1.1).

• Related Standards for Painting:
  Important complementary IS codes include:

  • IS 1477 Parts I & II (ferrous metals finishing)
  • IS 1650 (Colours for building finishes)
  • IS 2338 Parts I & II (wood finishing)
  • IS 2395 Parts I & II (painting concrete, masonry)
  • IS 3140 (asbestos cement painting)
  • IS 4597 (wood finishing with nitrocellulose)

• SI Units for Paint & Structural Calculations:
  Common units used:

  Quantity	Unit	Symbol	Conversion
  Force	newton	N	1 N = 1 kg·m/s²
  Pressure, stress	pascal	Pa	1 Pa = 1 N/m²
  Energy	joule	J	1 J = 1 N·m
  Power	watt	W	1 W = 1 J/s

Summary Diagram of Terminology Reference Flow

flowchart TD
    A[IS 2524 Part 2] --> B[Painting Terminology]
    B --> C[IS 1303:1963]
    A --> D[Painting Schedules]
    D --> E[Non-ferrous Metals]
    A --> F[Rounding Rules]
    F --> G[IS 2:1960]
    A --> H[Related Standards]
    H --> I[IS 1477, 1650, 2338, 2395, 3140, 4597]

**Use IS 1303 for exact painting definitions and IS 2 for rounding rules. Refer to related IS codes for detailed painting procedures and schedules

IS 2524 Part 2 refers to painting of non-ferrous metals. Key points on Necessary Information for Painting are:

1. Reference Standards

• Use definitions from IS 1303-1963 for painting terms (Clause 2.1).
• Follow information requirements as per IS 2524 Part 1 (1968) Clause 3 for efficient painting of non-ferrous metals.

2. Painting Process & Maintenance

• Subsequent finishing processes should follow guidelines in Clause 5 (Clause 6.5).
• Refer to related IS codes for detailed painting operations, schedules, and workmanship:
  • IS 1477 (Parts I & II) — Ferrous metals finishing
  • IS 1650 — Colours for building finishes
  • IS 2395 (Parts I & II) — Painting concrete, masonry
  • IS 3140 — Painting asbestos cement products
  • IS 4597 — Finishing wood with nitrocellulose

3. Essential Painting Information Checklist

• Surface preparation method
• Type of paint and primer
• Number of coats and drying times
• Environmental conditions (temperature, humidity)
• Compatibility with substrate
• Maintenance schedule

4. Units & Conversions (SI Units)

• Pressure/Stress: 1 Pa = 1 N/m²
• Force: 1 N = 1 kg·m/s²
• Energy: 1 J = 1 N·m

Summary Table: Key Painting Info

flowchart TD
    A[Start: Surface Preparation] --> B[Apply Primer]
    B --> C[Apply First Coat]
    C --> D[Drying Time]
    D --> E[Apply Subse

General Painting Requirements as per IS 2524 Part 2

Key References:

• Painting terms: IS 1303-1963
• Painting of ferrous metals: IS 1477 (Parts I & II)
• Painting of wood: IS 2338 (Parts I & II)
• Painting of concrete/masonry: IS 2395 (Parts I & II)
• Painting asbestos cement products: IS 3140
• Colour standards: IS 1650

Important Specifications & Process

• Surface Preparation:
  Untreated or temporarily protected surfaces must be pretreated as per IS 2524 Part 1, Clause 6.

• Painting Systems:
  Follow suitable painting systems as per Clause 5.1 of IS 2524 Part 2, which generally include:

  • Primer coat
  • Intermediate coat(s)
  • Finishing coat

• Maintenance & Finishing:
  Subsequent finishing processes should follow Clause 5 (surface cleaning, sanding, recoating).

Typical Painting Process Flow

flowchart LR
    A[Surface Preparation] --> B[Primer Application]
    B --> C[Intermediate Coat(s)]
    C --> D[Finishing Coat]
    D --> E[Maintenance & Recoating]

Units & Conversions (Relevant for Paint Quantities & Coverage)

Summary

• Use IS 1477 & IS 2395 for detailed schedules and workmanship for ferrous metals and masonry.
• Follow pretreatment as per IS 2524 Part 1.
• Apply primer, intermediate, and finishing coats as per recommended systems.
• Maintain surfaces with periodic inspection and recoating.

For detailed paint types, thickness, and drying times, consult the referenced IS codes above.

IS 2524 Part 2 refers to the Code of Practice for Painting of Non-Ferrous Metals in Buildings. Key points based on Clause 3.1 and related IS 2524 Part 1 are:

Key Specifications for Painting Non-Ferrous Metals

• Surface Preparation: Thorough cleaning by degreasing, pickling, or abrasive blasting to remove oxides and contaminants.
• Priming: Use of suitable primers compatible with the metal type (e.g., zinc chromate for aluminum, copper, brass).
• Paint Systems: Multi-coat systems recommended, typically:
  • Primer coat
  • Intermediate coat (if specified)
  • Finish coat (enamel or synthetic paints)
• Dry Film Thickness (DFT):
  • Primer: 15-25 microns
  • Total system: 50-75 microns depending on exposure

Typical Paint Compatibility Table (Simplified)

Important Notes

• Avoid direct painting on oily or contaminated surfaces.
• Follow drying times as per paint manufacturer.
• Environmental conditions (humidity, temperature) influence paint curing.

flowchart TD
    A[Surface Preparation] --> B[Priming]
    B --> C[Intermediate Coat (Optional)]
    C --> D[Finish Coat]
    D --> E[Drying & Curing]

For detailed formulations and procedures, refer to IS 2524 Part 1 (1968) and paint manufacturer datasheets.

Painting Schedules & Systems (IS 2524 Part 2)

Key Points from IS 2524 Part 2:

• Scope: Focuses on painting schedules for non-ferrous metals in buildings; pretreatment covered in Part 1.
• Painting Process: Follow pretreatment as per IS 2524 Part 1 Clause 6, then apply suitable paint systems (Clause 5.3).
• Reference Standards for Painting Schedules & Systems:

Typical Painting Schedule Elements (from referenced IS codes)

General Painting System Formula:

Total Dry Film Thickness (DFT) = Σ (DFT of each coat)

Where,
DFT per coat ≈ 40 to 75 microns (depending on paint type and surface)

Summary Diagram: Painting System Flow

flowchart LR
    A[Pretreatment (Cleaning & Surface Prep)] --> B[Primer Coat]
    B --> C[Intermediate Coat(s)]
    C --> D[Finish Coat]
    D --> E[Final Dry Film Thickness Check]

Note: Always consult the specific IS codes listed in Appendix A of IS 2524 Part 2 for detailed schedules and paint types suited to your material and environment.

IS 2524 Part 2: Maintenance & Removal of Old Paint on Non-Ferrous Metals

Clause 6.2 - Removal of Old Paint:

• Use organic solvent-type paint removers to protect anodized or chemical conversion coatings.
• Minimize mechanical abrasion or scraping to avoid damage.

Clause 6.5 - Maintenance:

• Follow finishing processes as per Clause 5 (surface preparation, priming, painting).

Key Specifications & Recommendations:

Important Notes:

• Avoid harsh mechanical methods (wire brushing, sanding) that can damage protective layers.
• Use compatible solvent removers to dissolve old paint without affecting metal substrate.
• After removal, ensure surface is clean, dry, and free of residues before repainting.

flowchart TD
    A[Old Paint on Non-Ferrous Metal] --> B[Apply Organic Solvent Paint Remover]
    B --> C[Minimal Mechanical Abrasion]
    C --> D[Protect Anodized/Chemical Coating]
    D --> E[Surface Cleaning & Preparation]
    E --> F[Apply Primer & Paint as per Clause 5]

For detailed paint types, schedules, and equipment, refer to:

• IS 1477 (Parts I & II)
• IS 2395 (Parts I & II)
• IS 1650 (Colours for finishes)

This ensures compliance with best practices for maintenance and repainting of non-ferrous metals.

Key Specifications & Related Standards on Painting (IS 2524 Part 2)

List of Related IS Codes on Painting (Appendix A):

Important Notes:

• Clause 6.5: Finishing procedures must follow the guidelines described in Clause 5 (pretreatment and surface preparation).
• IS 1303-1963 defines painting-related terminology.
• These codes provide detailed painting schedules, surface preparation, application methods, and quality control for various materials.

Quick Reference: Units Related to Painting (SI Units)

flowchart LR
    A[Surface Preparation] --> B[Pretreatment (IS 2524 Part 1)]
    B --> C[Painting Schedule (IS 2524 Part 2)]
    C --> D[Finishing & Maintenance (Clause 6.5)]
    D --> E[Refer