Code of practice for the painting of non-ferrous metals in buildings, Part 2: Painting
1968 Edition

IS 2524 Part 2: Overview and Applicability - Highlights

Coverage:

• Addresses painting and finishing methods for building materials.
• Harmonizes with global standards such as BS CP 231:1966.
• Focuses on correct finishing procedures (see Clause 6.5 and Section 5).

Referenced Painting and Finishing Standards:

Additional Notes:

• Test outcomes must be rounded according to IS: 2-1960.
• Painting terminology defined in IS: 1303-1963.
• SI units are applied consistently (e.g., 1 N = 1 kg·m/s², 1 Pa = 1 N/m²).

SI Units Relevant to Painting and Materials

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 outline supports adherence to IS 2524 Part 2 during painting and finishing operations by referencing critical codes and units.

IS 2524 Part 2 - Terminology and Definitions: Essentials

• Reference Source for Terms:
  Painting definitions align with IS 1303:1963 (Clause 2.1).

• Rounding Protocol:
  Test and analysis data must be rounded following IS 2:1960, maintaining the specified significant figures (Clause 0.5).

• Covered Painting Schedules:
  Focus on painting sequences for non-ferrous metals applied in buildings (Clause 1.1).

• Associated IS Standards:
  Complementary codes include:

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

• SI Units for Painting and Structural Calculations:
  Common units used:

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

Diagram Illustrating Terminology and References

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]

For precise painting terminology, refer to IS 1303 and for rounding rules, follow IS 2. Consult related standards for comprehensive painting procedures and schedules.

IS 2524 Part 2 outlines painting of non-ferrous metals with key guidelines on necessary information:

1. Reference Documents

• Adopt painting terminology from IS 1303-1963 (Clause 2.1).
• Follow data requirements specified in IS 2524 Part 1 (1968), Clause 3, for effective painting.

2. Painting and Maintenance Procedures

• Subsequent finishing steps must comply with Clause 5 and 6.5.
• Refer to relevant IS standards for detailed applications, schedules, and workmanship:
  • IS 1477 (Parts I & II) — Ferrous metal finishing
  • IS 1650 — Colour standards
  • IS 2395 (Parts I & II) — Painting masonry and concrete
  • IS 3140 — Asbestos cement painting
  • IS 4597 — Nitrocellulose wood finishing

3. Checklist of Painting Information

• Surface cleaning and preparation methods
• Types of primers and paints to be used
• Number of coats and drying durations
• Environmental conditions like temperature and humidity
• Compatibility with underlying substrates
• Scheduled maintenance intervals

4. SI Units and Conversion Factors

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

Summary Table for Critical Painting Data

flowchart TD
    A[Start: Surface Preparation] --> B[Apply Primer]
    B --> C[Apply First Coat]
    C --> D[Drying Period]
    D --> E[Apply Subsequent Coats]
    E --> F[Final Finish]
    F --> G[Maintenance]

This framework supports proper preparation and painting of non-ferrous metals.

Core Painting Requirements per IS 2524 Part 2

Reference Standards:

• Painting terminology: IS 1303-1963
• Ferrous metal painting: IS 1477 (Parts I & II)
• Wood painting: IS 2338 (Parts I & II)
• Concrete and masonry painting: IS 2395 (Parts I & II)
• Asbestos cement painting: IS 3140
• Colour specifications: IS 1650

Specifications and Procedures

• Surface Preparation:
  Surfaces that are bare or temporarily protected must be treated as described in IS 2524 Part 1, Clause 6.

• Painting Systems:
  Appropriate systems per Clause 5.1 include:

  • Primer coat
  • One or more intermediate coats
  • Final finishing coat

• Maintenance and Finishing:
  Subsequent finishing follows Clause 5, including cleaning, sanding, and reapplication.

Typical Painting Workflow

flowchart LR
    A[Surface Preparation] --> B[Primer Application]
    B --> C[Intermediate Coats]
    C --> D[Final Coat]
    D --> E[Inspection and Maintenance]

Relevant Units for Paint Application

Summary

• Employ IS 1477 and IS 2395 for comprehensive painting schedules and workmanship.
• Follow pretreatment guidelines from IS 2524 Part 1.
• Apply primer, intermediate, and finishing layers as specified.
• Maintain coatings with regular inspections and repainting as needed.

Consult referenced IS standards for specifics on paint types, thicknesses, and drying times.

IS 2524 Part 2 provides a painting code for non-ferrous metals in buildings, emphasizing Clause 3.1 and related Part 1 stipulations:

Key Painting Instructions for Non-Ferrous Metals

• Surface Preparation: Thorough cleaning using degreasing, pickling, or abrasive blasting to eliminate oxides and impurities.
• Priming: Apply primers that match the metal type—for example, zinc chromate for aluminum, copper, and brass.
• Paint Systems: Employ multi-layer systems generally comprising:
  • Primer coat
  • Optional intermediate coat
  • Final coat (enamels or synthetic paints)
• Dry Film Thickness (DFT):
  • Primer: 15-25 microns
  • Overall system: 50-75 microns depending on exposure conditions

Simplified Compatibility Table

Notes

• Avoid painting on greasy or contaminated surfaces.
• Adhere to manufacturer drying times.
• Environmental factors like humidity and temperature affect curing.

flowchart TD
    A[Surface Cleaning] --> B[Priming]
    B --> C[Intermediate Coat (If required)]
    C --> D[Final Coat]
    D --> E[Drying and Curing]

Refer to IS 2524 Part 1 (1968) and paint data sheets for detailed formulations and application methods.

Painting Schedules and Systems per IS 2524 Part 2

Overview:

• Focuses on painting schedules for non-ferrous metals, with pretreatment covered in Part 1.
• Painting applies after pretreatment per IS 2524 Part 1 Clause 6, followed by coating systems outlined in Clause 5.3.
• Reference standards for painting schedules include:

Typical Painting Schedule Elements (From IS Codes)

General Formula for Painting Systems

Total DFT = Sum of DFT of individual coats

Where,
DFT per coat ranges from approximately 40 to 75 microns depending on paint and substrate

Process Flow Diagram

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

Always consult the detailed IS codes listed in IS 2524 Part 2 Appendix A for tailored painting schedules and suitable paint products.

IS 2524 Part 2: Guidelines for Maintenance and Removal of Existing Paint on Non-Ferrous Metals

Clause 6.2 - Paint Removal:

• Employ organic solvent-based paint removers to safeguard anodized or chemical conversion layers.
• Limit mechanical scraping or abrasion to prevent surface damage.

Clause 6.5 - Maintenance:

• Follow finishing instructions outlined in Clause 5, including surface prep, priming, and repainting.

Specifications and Recommendations

Important Points

• Avoid harsh mechanical methods such as wire brushing or sanding that might impair protective layers.
• Use compatible solvent removers that dissolve old paint without harming metal substrates.
• After paint removal, ensure surfaces are 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 Coatings]
    D --> E[Surface Cleaning & Preparation]
    E --> F[Primer and Paint Application 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 proper maintenance and repainting practices for non-ferrous metals.

Overview of Related IS Standards for Painting (IS 2524 Part 2)

List of Relevant IS Codes (Appendix A):

Additional Notes:

• Clause 6.5 emphasizes finishing methods consistent with Clause 5 (pretreatment and surface prep).
• IS 1303-1963 defines painting-related vocabulary.
• These standards provide comprehensive guidance on painting schedules, surface preparation, application techniques, and quality assurance.

Quick Reference Table of SI Units in Painting

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