Kilometre stone painted with high-gloss reflective enamel on an Indian highway
Enamel Reflectivity

Painting Kilometre & Hectometre Stones with Reflective Enamel

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YNM Editorial

YNM Safety Technical Team

3 min read

Stones are not kerbs — but they use the same chemistry

Route markers take yellow/black or white/black blocking so chainage is readable at speed and at night. Enamel paint with reflectivity is still the usual named system because the film is high-gloss, bead-receptive and familiar to NHAI maintenance contractors.

Prep decides whether the gloss lasts

Dusty, laitance-heavy concrete sheds enamel in a season. Wire-brush or wash, let the stone dry, then coat. Beads go on while the film can still wet them — the same rule as kerb work, smaller surface.

Do not substitute decorative enamel

Household or furniture enamel is not a road-marker product. Use the infrastructure grade on the enamel paint with reflectivity page and keep IS 164 paperwork with the stone-painting method statement.

Written By: YNM Editorial, YNM Safety Technical Team

Reviewed By: Testing & Quality Assurance Team

Enamel ReflectivityKilometre StonesHectometre Stones

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