Code of practice for painting concrete, masonry and plaster surfaces, Part 2: Schedules

IS 2395 Part 2: Scope & Key Specifications

• Scope: Covers schedules and specifications for painting new calcareous surfaces (interior/exterior).
• Definitions: As per IS 1303:1983 & IS 2395 Part 1:1994.

Key Tables for Painting Schedules (Clause 5.2.1)

Similar table applies for exterior surfaces with minor variations in undercoats.

Notes:

• Paints may be thinned as per manufacturer.
• Refer to respective IS codes for detailed paint types and application.
• Primer and undercoats improve durability and finish quality.

flowchart TD
    A[New Calcareous Surface] --> B{Interior/Exterior?}
    B -->|Interior| C[Select Finish Type]
    B -->|Exterior| D[Select Finish Type]
    C --> E[Apply Primer Coat]
    C --> F[Apply Under Coat (if required)]
   

IS 2395 Part 2 (1994) – Key References & Specifications

• Referenced Indian Standards:

  • IS 1303:1983 – Definitions related to painting.
  • IS 2395 Part 1:1994 – Painting operations and workmanship for calcareous surfaces.
  • IS 3140:1965 – Painting asbestos cement building products.
  • IS 2:1960 – Rules for rounding off numerical values.

• Key Points:

  • Part 2 focuses on painting schedules for concrete, masonry, and plaster surfaces.
  • Specifies one coat of respective finish instead of a thinned primer coat.
  • Thinning of finishes is allowed as per manufacturer’s recommendations.
  • The standard integrates international practices with Indian field conditions.
  • Rounding off of test results follows IS 2:1960 guidelines.

• Additional Notes:

  • Part 1 covers painting operations/workmanship.
  • Part 2 and IS 3140 together provide comprehensive guidance on painting calcareous and asbestos cement surfaces.

This standard is essential for specifying painting schedules and ensuring quality in building surface finishes.

IS 2395 Part 2 refers to definitions as per:

• IS 1303 : 1983 — Definitions related to steel tubes.
• IS 2395 (Part 1) : 1994 — General definitions for steel tubes and schedules.

Key Points on Definitions:

• No independent definitions in Part 2; it relies on Part 1 and IS 1303.
• Definitions cover terms like:
  • Nominal size
  • Schedule number
  • Wall thickness
  • Outside diameter
  • Tolerance limits

Important Reference Tables (from IS 2395 Part 1):

Typical Formula for Wall Thickness:

[ t = \frac{S \times D}{2 \times S + P} ]

Where:

• ( t ) = wall thickness
• ( S ) = allowable stress
• ( D ) = outside diameter
• ( P ) = internal pressure

For detailed schedules and tolerances, refer to IS 2395 Part 1 tables.

flowchart LR
A[IS 2395 Part 2 Definitions] --> B[IS 1303:1983]
A --> C[IS 2395 Part 1:1994]
B & C --> D[Nominal Size, Wall Thickness, Schedule]
D --> E[Application & Tolerances]

Summary: Use IS 1303 and IS 2395 Part 1 for all definitions and schedules referenced in Part 2.

IS 2395 Part 2 (1994) — Necessary Information for Painting Calcareous Surfaces

Key Points:

• Definitions per IS 1303:1983 and IS 2395 Part 1:1994 apply.
• Refer to Annex A for related Indian Standards.
• Painting schedules and pretreatment info align with IS 2395 Part 1, Clause 4.

Painting Schedules for New Calcareous Surfaces

IS 2395 Part 2: Schedules for Painting Calcareous Surfaces

Key Painting Schedules (Clause 5.2.1)

Painting of new calcareous surfaces (Interior & Exterior) involves:

• Primer Coat
• Under Coat (if required)
• Finishing Coats

Table 1: Interior Surfaces

Table 2: Exterior Surfaces

IS 2395 Part 2: Painting Schedules for New Calcareous Surfaces - Interior

Key Specifications (Clause 5.2.1 & Table 1)

Important Notes:

• Surfaces must be dry before painting due to alkalinity and moisture retention.
• Primer coats are typically one full coat of the finish type, may be thinned per manufacturer's instructions.
• Use fillers and undercoats as required to ensure smooth finish.
• Refer to respective IS codes for detailed specifications of each paint type.

This schedule ensures durability and proper adhesion on alkaline calcareous surfaces indoors.

IS 2395 Part 2 - Key Specifications for Coat Application and Pretreatments on Calcareous Surfaces

1. Coat Application Schedule (Tables 1 & 2)

IS 2395 Part 2: Surface Preparation & Filling for Calcareous Surfaces

Surface Preparation (Clause 5.1)

• Surfaces (concrete, masonry, plaster) must be dry before painting due to alkalinity and water retention.
• Follow IS 2395 Part 1 (Clause 7) for detailed preparation.
• Asbestos cement surfaces: prepare as per IS 3140:1965.
• Initial paint choice should align with the final painting scheme.
• Cement paint, lime wash, colour wash tolerate some dampness.

Filling

• Use fillers where required before undercoats, especially for distemper, emulsion, flat/semigloss, gloss, and chemical resistant paints.

Painting Schedules (Clause 5.2.1)

Note: Paints may be thinned per manufacturer recommendations.

Summary Diagram: Painting Process Flow

IS 2395 Part 2: Maintenance Work - Key Specifications

Maintenance Painting Practices (Clause 5.3, Table 3)

Note: For serious defects (except chalking), remove paint completely and repaint fully. No effective remedy for efflorescence.

Paint Schedules for Maintenance (Summary from Tables 1 & 2)

• Primer Coat: As per paint type (e.g., alkali-resistant primer for distemper, gloss paint).
• Under Coat: Use filler/undercoat as required.
• Finishing Coats: Generally two coats of the finishing paint.
• Common Paint Types: White wash, colour wash, distemper (dry/oil-bound), emulsion, flat/semigloss, gloss, chemical resistant, cement paint, bituminous paint.

References to IS Standards for Paint Types

IS 2395 Part 2: List of Referred Indian Standards

This part of IS 2395 references several key Indian Standards essential for painting concrete, masonry, and plaster surfaces:

• IS 1303:1983 — Definitions related to painting materials and processes.
• IS 2395 Part 1:1994 — Code of practice for painting operations and workmanship on calcareous surfaces.
• IS 3140:1965 — Code of practice for painting asbestos cement building products.
• IS 2:1960 — Rules for rounding off numerical values (used for test result rounding).

Key Specifications:

• Primer coat application: One full coat of primer is required, replacing earlier thinned primer coat practice.
• Finish coat: May be thinned as per manufacturer’s recommendations listed in painting schedule tables.
• Painting schedules: Detailed in Annex A (not provided here), specifying types and number of coats for different surfaces.

Notes:

• The standard emphasizes international coordination and adapts to Indian field practices.
• For compliance, rounding off test results follows IS 2:1960 rules.

If you need specific painting schedules or tables, please specify!

IS 2395 Part 2 (1994) - Committee Composition

The Painting, Varnishing and Allied Finishes Sectional Committee (CED 34) responsible for IS 2395 Part 2 includes representatives from: