About STP ShaliMark WB 60

ShaliMark WB 60 is STP Limited’s high-build grade of cold-applied, water-based acrylic road marking paint. The number in the name matters: at 60 ± 2% volume solids, each litre leaves substantially more paint on the road than a conventional water-based marking product, producing an un-beaded dry film of 180 to 250 microns. That extra film thickness is what separates a line that survives monsoon traffic from one that fades within a season. The paint bonds to both bituminous and concrete carriageways, dries to a smooth matt finish, and carries drop-on glass beads that make the marking retroreflective under headlights.

For contractors, the practical appeal is speed and simplicity. There is no preheater, no melting kettle and no LPG on site — the material sprays cold through standard airless equipment or goes down by roller and brush for smaller jobs. At 27°C the film is surface dry in about ten minutes and hard dry in forty-five, so lane closures stay short. Space Arc Engineering stocks ShaliMark WB 60 in its standard 20-litre packs with matched glass beads, and our application teams handle line marking across Delhi NCR and pan-India project sites.

The technical insight

Two mechanisms do the work here. First, film formation: as the water phase evaporates, the acrylic emulsion particles pack together and coalesce into a continuous, traffic-resistant film — which is why the TDS caps application at 80% relative humidity and a 10–40°C substrate window; trapped moisture or cold slows coalescence and extends drying time. Second, retroreflection: glass beads broadcast onto the wet paint sit half-embedded as it cures. Each exposed hemisphere refracts incoming headlight, reflects it off the paint-backed underside of the bead, and returns it toward the light source — the driver’s own eye line. That is why the bead dosage (250–300 g/m²) and the timing of the broadcast matter as much as the paint itself: beads dropped too late sit on the surface and shear off; beads sunk too deep cannot return light.

Where it is used

• Lane lines, edge lines and centre lines on urban and arterial roads (concrete or bituminous)
• Airport runways, taxiways and apron markings
• Zebra crossings and pedestrian crossing bands
• Path dividers and median demarcation
• Speed-breaker and rumble-strip visibility bands
• Parking lot bay marking and circulation arrows
• Township, campus and industrial-estate internal road marking
• Repainting and refreshing of aged line marking

Key advantages

• High-build film of 180–250 microns (un-beaded) from a single application — longer line life than standard-build water-based paints
• Retroreflective with BS 6088 Class B drop-on beads, keeping markings visible in poor light and at night
• Fast drying at 27°C — surface dry in about 10 minutes, hard dry in 45 — so traffic diversions stay brief
• Water-based and very low VOC, with easy water cleanup and much lower disposal cost than solvent-based paints
• Cold applied by airless spray, roller or brush — no melting kettle, preheater or hot-work permit needed
• Bonds to both concrete and bituminous surfaces, covering the full range of Indian carriageways
• Four standard shades — White, Golden Yellow, Lane Red and Black — for lane, hazard and legend work
• Easy repainting over its own aged film during maintenance cycles

Limitations & considerations

• Not as long-wearing as hot-applied thermoplastic under heavy commercial traffic — national highways and toll corridors are still thermoplastic territory
• Drying slows noticeably in high humidity or low temperatures; the TDS restricts application to 10–40°C substrate temperature and below 80% RH
• Substrate must be fully cured and dry — new concrete needs at least 28 days, and standing water anywhere in the work area rules out application
• Pre-existing markings must be removed before overcoating a different or failed line, which adds surface-preparation time and cost
• Retroreflectivity depends on beads being broadcast onto wet paint; missing that window leaves a line with poor night visibility
• 12-month shelf life in unopened packs, and stock must be kept cool, sealed and away from heat

Selection & best practice

Specifications

Industry use cases

How we position STP ShaliMark WB 60

ShaliMark WB 60 sits in the middle of STP Limited’s road marking family, and we stock the whole ladder. Where a corridor carries heavy commercial traffic — national highways, toll plazas — hot-applied ShaliMark thermoplastic remains the longer-wearing specification. Where budgets or traffic are lighter, ShaliMark WB 40 delivers the same water-based convenience at a standard film build. We supply the matched BS 6088 Class B glass beads with every order, and for coloured surface demarcation beyond line work, STP’s Coloured Asphalt and Coloured Mastic complete the package. Our applicator teams can quote supply-and-apply for any of these across Delhi NCR and pan-India.

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