What is the standard schedule for painting new internal plaster with plastic emulsion?

One coat of alkali-resistant cement primer followed by two finishing coats of plastic emulsion paint.

Is a primer required before applying cement paint on exterior surfaces?

Usually, a separate primer is not required; the first coat is often a thinned version of the cement paint, followed by two standard finishing coats.

Can synthetic enamel paint be applied directly to bare concrete or plaster?

No, the surface must be sealed with a suitable alkali-resistant cement primer and smoothed with putty before the application of enamel.

IS 2395

: 2000

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

CurrentFrequently UsedCode of PracticeBIMArchitectural · Building Construction Practices incl. Painting, Varnishing

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This standard lays down the schedules for painting internal and external concrete, masonry, and plastered surfaces. It details the required number of coats, including primers, undercoats, and finishing coats for various finishes like distemper, plastic emulsion, cement paints, and enamels.

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

Quick Reference Values

minimum curing period before painting28 days

standard primer coats for new plaster1 coat

standard finishing coats for emulsion2 coats

standard finishing coats for cement paint2 coats

maximum surface moisture content10%

Practical Notes

Ensure plastered surfaces are fully cured for at least 28 days and completely dry before applying primer or paint.

Always use an alkali-resistant primer on new cementitious surfaces to prevent saponification and peeling of the paint film.

For exterior cement painting, pre-wetting the surface is crucial to prevent premature drying and chalking of the paint.