What is the primary application for IS 348 varnish?

It is used for general interior decorative finishing on wooden furniture and joinery.

What is the acceptable drying time for this varnish?

It should be surface dry within 4 hours and hard dry within 18 hours.

How is the quality of the varnish finish tested?

It is tested visually against a standard reference panel for gloss, clarity, and absence of blushing or wrinkling.

IS 348

: 2007

Varnish, Brushing, Finishing, Clear, For General Purposes - Specification

CurrentSpecializedSpecificationMaterials Science · Painting, Coatings and Surface Finishing

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This standard prescribes the requirements and testing methods for clear brushing varnish used for general interior finishing purposes. It establishes limits for drying time, flash point, and finish quality to ensure aesthetic appeal and basic surface protection for woodwork.

Specifies requirements and methods of test for clear finishing varnish suitable for general purposes.

Quick Reference Values

flash pointNot below 30°C

drying time surface dryMax 4 hours

drying time hard dryMax 18 hours

flexibility and adhesionNo damage or detachment after bending test

Practical Notes

Proper surface preparation (sanding and applying sanding sealers) is critical before applying clear varnish to achieve the desired IS code finish.

The standard primarily relies on IS 197 for specific test methodologies regarding varnishes and lacquers.

This varnish is generally intended for interior use; exterior wood surfaces exposed to UV and severe weathering typically require specialized exterior-grade coatings.