The IS 2338 Part 2 (1967) standard outlines comprehensive guidelines and detailed schedules for applying surface finishes to wood and wood-derived materials, including paints, varnishes, stains, and other coatings. It covers primer, undercoat, and finishing coat specifications for both interior and exterior woodwork, along with maintenance recommendations, ensuring consistent quality and long-lasting protection.
Overview
The IS 2338 Part 2 (1967) standard outlines comprehensive guidelines and detailed schedules for applying surface finishes to wood and wood-derived materials, including paints, varnishes, stains, and other coatings. It covers primer, undercoat, and finishing coat specifications for both interior and exterior woodwork, along with maintenance recommendations, ensuring consistent quality and long-lasting protection.
Audience
Contents
Structure
This section defines the extent and applicability of the standard, harmonizing international best practices with Indian field conditions. It includes references to painting materials, tools, and analytical methods per related IS codes, and details finishing schedules for new woodwork installations inside and outside buildings.
This chapter explains essential terms related to painting materials, finishes, and accessory tools based on IS 1303-1963 and IS 707-1958. It describes the composition of a finish as multiple coats including stopping and filling, and outlines maintenance painting principles for durability and compatibility.
Details the necessary data and references from Part 1 of IS 2338 to ensure effective finish application on wood surfaces. It also provides maintenance painting schedules according to surface condition, specifying cleaning, sanding, and repainting steps.
Presents detailed tables prescribing primers, undercoats, and finishing coats for various finishes on new interior and exterior woodwork. It covers filler application, French polishing standards, and instructions for using proprietary products.
Outlines surface preparation steps including cleaning, sanding, knot treatment with shellac, and filling deep holes. Specifies the sequence and types of coats to be applied based on finish type, with emphasis on manufacturer consistency for proprietary materials.
Focuses on proper cleaning and smoothing of wood surfaces, priming, knot treatment with two shellac coats, and filling deep holes using plastic wood complying with IS 423-1961 before applying subsequent coats.
Details finishing coat types and related IS specifications for interior wood finishes including enamel, oil gloss, flat, varnish, and grained work, along with optional filler use and proprietary material recommendations.
Enumerates finishing schedules for outdoor woodwork, specifying primers, undercoats, and finishing coats suitable for exterior exposure, including use of alkyd finishes and glaze or stain treatments.
Provides cleaning and repainting methods tailored to surface conditions such as blistering, cracking, and chalking, with stepwise guidance for localized or extensive defects to maintain protective quality.
Lists relevant Indian Standards for primers, fillers, undercoats, and finishing materials applicable to wood finishing, aiding in selecting suitable products conforming to quality requirements.
Describes stain types available as ready-to-use liquids or powders for dilution with water, spirit, or oil, including considerations for driers and thinners, and their application within finishing schedules.
Frequently Asked
IS 2338 Part 2 provides detailed finishing schedules for both interior and exterior woodwork. Interior finishing includes enamel, oil gloss, flat, varnish, and grained finishes with specified primers, undercoats, and finishing coats as per related IS codes. Exterior finishing schedules similarly designate primers and coatings suitable for outdoor conditions to ensure durability and aesthetic quality.
The standard specifies appropriate primers and undercoats for various finishes. For example, enamel finishes use primers like IS:103 or IS:3536E and undercoats such as IS:133 for interior woodwork. Oil gloss finishes require primers like IS:103 or IS:3636E and undercoats like IS:3539E or IS:113. Exterior finishes have corresponding IS standards such as IS:2932 or IS:2933 for enamel undercoats.
Before finishing, knots on wood surfaces must be sealed with two coats of shellac knotting to prevent resin bleed-through, while deep holes should be filled with plastic wood conforming to IS:423-1961. Proper surface cleaning and smoothing with abrasive paper are essential prior to priming and subsequent coating.
Maintenance painting under IS 2338 Part 2 depends on the surface condition. For surfaces without blistering or cracking, cleaning and applying a reviver coat suffice. Localized cracking requires rubbing down, primer touch-up, and two finishing coats. For blistering, scraping to bare wood and reapplication of primer and finishing coats are necessary. Severe damage mandates complete paint removal and reapplication following the full finishing schedule.
Yes, IS 2338 Part 2 advises that when proprietary finishing products are used, all components—including primers, undercoats, and finishing coats—should be sourced from the same manufacturer. This ensures chemical compatibility and prevents finish failure, maintaining the integrity and durability of the wood surface treatment.
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