STP ShaliPoxy WB TC 2K
Two-component, solvent-less, water-based polyamine epoxy topcoat that turns concrete and plastered walls into washable, low-odour hygienic surfaces — CFTRI tested to the US FDA 21 CFR 175-300 method.
What is it?
A 2K water-based, solvent-less, polyamine-modified epoxy wall topcoat from STP Limited, available in a range of colours with a matt, washable finish.
Where is it used?
Internal walls of food processing plants, dairies, hospitals, diagnostic labs, hotels and manufacturing units — including damp concrete substrates where solvent-based epoxies struggle.
Why use it?
Low odour and non-flammable for occupied facilities, tough enough for daily wash-downs and sanitising chemicals, and CFTRI tested per 21 CFR 175-300 (US FDA test method).
How is it applied?
Brush or roller in two coats over ShaliPrime 2E primer, building 100–130 micron DFT at a theoretical consumption of 200 g/m² for the two-coat system.
About STP ShaliPoxy WB TC 2K
ShaliPoxy WB TC 2K is STP Limited’s answer to a very specific problem in Indian food and pharma facilities: walls that must survive aggressive daily cleaning, yet cannot be coated with strong-smelling solvent epoxies while production is running nearby. Because the epoxy is dispersed in water rather than solvent, the coating goes on with minimal odour, is non-flammable during application, and still cures into a hard, abrasion-resistant film that shrugs off scrubbing and chemical splash. The matt finish comes in a range of colours, so QA teams can colour-code zones without losing washability.
What sets it apart from ordinary wall paints is its tolerance for dampness. The TDS permits application on damp concrete, and STP states it can even be coated soon after shuttering removal — a genuine schedule-saver on fast-track dairy and processing plant projects where waiting weeks for a bone-dry wall is not an option. Backed by CFTRI testing to the 21 CFR 175-300 US FDA method, it gives consultants documented assurance for hygiene-critical areas. Space Arc Engineering supplies and applies ShaliPoxy WB TC 2K across Delhi NCR and pan-India, with primer and full system support.
The technical insight
In a conventional epoxy, solvent carries the resin and must fully evaporate — releasing VOCs and failing on damp walls where trapped moisture blocks solvent escape. ShaliPoxy WB TC 2K inverts this: the epoxy resin and polyamine hardener are emulsified in water, so the film is chemically compatible with residual substrate moisture. As water evaporates, the dispersed particles coalesce while the amine-epoxide crosslinking reaction builds a dense three-dimensional network. The result is a breathable cure path with a hard-wearing outcome — foot-traffic ready in 24 hours and fully trafficable in 7 days. The polyamine modification gives good adhesion to porous concrete and helps suppress pinholing from substrate air release, which is why the film stays continuous and cleanable — the property that actually matters when a wall is sanitised every shift.
Where it is used
- Hygienic wall coating in food processing plants and dairies
- Hospital, diagnostic laboratory and clinical area walls
- Pharmaceutical and cleanroom-adjacent wall finishes
- Commercial kitchens and back-of-house walls in hotels
- Internal walls of manufacturing plants needing washable surfaces
- Damp or green concrete walls requiring early coating after shuttering removal
- Beverage and dairy processing halls exposed to frequent wash-downs
Key advantages
- Water-based and solvent-less — very low odour, suitable for occupied food and pharma facilities
- CFTRI tested as per 21 CFR 175-300 of the US FDA test method
- Tolerates damp concrete; can be applied soon after shuttering removal
- Tough, abrasion-resistant film that withstands scrubbing and sanitising chemicals
- Non-flammable and non-toxic during application — no hot-work or ventilation shutdowns
- Resists mildew growth in humid processing environments
- Good adhesion to porous substrates with reduced pinholing from air release
- Workable 60–120 minute pot life at 30°C suits Indian site temperatures
Limitations & considerations
- Not suitable where rising dampness, osmosis risk or relative humidity above 75% is expected
- Must not be applied to asphalt, weak or friable concrete, unmodified sand-cement screeds, PVC tiles/sheets, or moving substrates such as steel walkways
- Application window is limited to roughly 10–40°C substrate/ambient temperature
- Some light shade change can occur over the long term in adverse exposure — cosmetic only, but worth flagging on colour-critical projects
- At 100–130 microns DFT it is a hygienic topcoat, not a heavy-duty chemical-resistant tank lining
- Standard practice per the TDS still calls for 28-day cured concrete with moisture below 5% and mandatory priming with ShaliPrime 2E
Selection & best practice
Grind the wall mechanically and remove dust, laitance, oil and old paint completely — a slightly textured concrete surface bonds best. Check that moisture content is below 5% for standard application. Prime with ShaliPrime 2E and let it reach touch-dry, typically 6–8 hours. Stir Component A (resin) and Component B (hardener) separately with a spiral-blade drill mixer at around 1000 rpm, then add B slowly into A under continuous stirring until fully homogeneous; pause briefly to let entrapped air escape before use. Apply by brush or roller in two coats to build 100–130 microns DFT, keeping within the 60–120 minute pot life at 30°C. Recoat between 8 and 24 hours — if the window is missed, abrade lightly before the next coat. Allow 24 hours before foot traffic and 7 days for full cure. Wear gloves and eye protection, and wash tools with water before the material sets.
Specifications
| Composition | Two-component, solvent-less, water-based polyamine-modified epoxy |
| Finish / colours | Matt finish, range of colours |
| Pot life at 30°C | 60–120 minutes |
| Recommended DFT | 100–130 microns (two-coat system) |
| Theoretical coverage | 200 g/m² in 2 coats (surface-condition dependent) |
| Recoat window | Minimum 8 hours, maximum 24 hours |
| Curing time | Foot traffic after 24 hours; wheel traffic / full cure after 7 days |
| Food-environment testing | CFTRI tested as per 21 CFR 175-300 (US FDA test method) |
| Packing & shelf life | 25 kg pack; 12 months in original sealed packing, stored cool and dry |
Industry use cases
Food & Dairy Processing
Production hall and cold-room walls in dairies, bakeries and packaged-food units where FSSAI audits demand washable, mildew-resistant surfaces that stand up to daily caustic and sanitiser wash-downs.
Pharma & Healthcare
Hospital corridors, diagnostic labs and pharma ancillary areas needing a low-odour coating that can be applied during phased shutdowns without evacuating adjacent wards or production suites.
Hospitality & Commercial Kitchens
Hotel kitchens, canteens and QSR back-of-house walls where grease, steam and scrubbing destroy ordinary paints within months.
General Manufacturing
Internal walls of engineering, electronics and FMCG plants where housekeeping standards call for a dust-free, wipeable finish and fast return-to-service.
Fast-Track Construction
New-build processing facilities where walls must be coated on early-age or damp concrete to compress handover schedules.
Frequently asked questions
Is ShaliPoxy WB TC 2K food-safe?
Can it be applied on new or damp concrete?
Which primer should I use and how long before topcoating?
How much material do I need per square metre?
Can I use it on floors as well as walls?
What happens if I miss the recoat window?
How we position STP ShaliPoxy WB TC 2K
ShaliPoxy WB TC 2K is the wall-coating leg of STP’s hygienic finishes range: pair it with ShaliPrime 2E (or ShaliPrime 2E SF on damp substrates) as the mandatory primer, and with ShaliFloor TC WB 2E where the same low-odour, water-based chemistry is needed on floors — giving a single-source wall-plus-floor hygiene system with one applicator warranty. Where direct food-contact certification or heavier chemical duty is specified, STP’s ShaliPoxy 400 food-grade epoxy is the step up. Space Arc also supplies Fosroc’s Nitocote epoxy coatings and Sika protective coatings for projects where the consultant’s spec is built around those systems, so we can price the genuinely comparable option rather than force-fit one brand.
Fosroc Nitocote EP403 — Specifiers already on a Fosroc schedule often choose Nitocote EP403 for the same damp-substrate situations, since it is a solvent-free epoxy formulated to bond to green or damp concrete with Fosroc’s project documentation behind it.
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