STP ShaliFloor 4 PUS
A four-component, solvent-free polyurethane cement screed that takes thermal shock, wash-downs and heavy traffic in food, beverage and process plants.
What is it?
A four-component, solvent-free polyurethane cement (PU concrete) screed from STP, trowel-applied at 7-12 mm for heavy-duty hygienic industrial floors.
Where is it used?
Food and beverage factories, breweries, distilleries, dairies, meat and fish processing, cold stores, refrigerated logistics and chemical containment areas.
Why use it?
It combines cement-like strength with polyurethane flexibility, so it resists steam cleaning, thermal shock, food acids and abrasion far better than epoxy on wet-process floors.
How is it applied?
Grind and prime the slab, mix the four pre-weighed components, then trowel-lay the screed at 7-12 mm and finish; broadcast anti-slip aggregate where wet grip is needed.
About STP ShaliFloor 4 PUS
ShaliFloor 4 PUS is STP’s heavy-duty answer to the floors that quietly wreck ordinary coatings: production halls that get hosed down every shift, walk-in freezers, brewery and dairy floors that swing between hot CIP water and cold product, and bays where trolleys, pallet jacks and forklifts pound the surface all day. It is a four-component, solvent-free flooring system built on hybrid polyurethane cement technology, laid by trowel at an extreme high build of 7 to 12 mm. That thickness is the whole point. A thin paint film has nowhere to hide when a slab moves or a drum of hot caustic gets spilled on it, whereas a monolithic PU cement screed behaves much more like the concrete it sits on while adding the chemical and wash-down resistance concrete never had.
The material ships as a pre-weighed 17.6 kg unit pack with all four components in one carton, so there is no site guesswork over ratios. On the floor it cures to a dense, seamless, joint-free surface with no place for bacteria, moisture or spilt product to collect, which is exactly what food-safety and hygiene audits look for. Because polyurethane cement is inherently more forgiving of moisture than pure epoxy, ShaliFloor 4 PUS can go down over green or damp concrete once a suitable moisture-tolerant primer is used, letting plants recommission floors sooner instead of waiting weeks for a slab to bone-dry. Space Arc Engineering supplies and applies it as STP’s project distributor across Delhi NCR and pan-India.
The technical insight
The performance comes from marrying two chemistries that fail in opposite ways. Cement gives compressive strength and heat tolerance but cracks and is porous; polyurethane gives flexibility, chemical resistance and a closed, cleanable surface but softens under heat and load on its own. In a PU cement hybrid the reactive polyurethane binder cross-links through the cementitious matrix, so you get a screed that stays hard and dimensionally stable when hot CIP water or steam hits it, yet flexes with the slab instead of debonding. The high 7-12 mm build matters because a thick, aggregate-filled screed spreads point loads and thermal stress over a large mass of material, which is why these floors survive thermal shock cycling and forklift impact that would craze a 2-3 mm epoxy topping. The tight, low-porosity finish is what delivers the resistance to food acids, alkalis and cleaning agents: with almost no open capillaries, aggressive liquids cannot soak in and undermine the bond from below.
Where it is used
- Wet-process food and beverage production halls subject to daily wash-down and CIP
- Breweries, distilleries and wineries where spillage of acids, sugars and alcohol is routine
- Dairy, meat, poultry and seafood processing floors needing hygienic, cleanable surfaces
- Cold stores and refrigerated logistics areas exposed to sub-zero temperatures
- Bakeries, commercial kitchens and steam-cleaned areas with thermal-shock cycling
- Pharmaceutical and beverage packaging halls demanding a seamless, dust-free floor
- Chemical handling and secondary containment areas needing acid and alkali resistance
- Loading bays and internal traffic aisles carrying forklift and pallet-truck loads
Key advantages
- Four-component pre-weighed 17.6 kg pack removes on-site batching errors
- Solvent-free and low-odour, so it can be laid in occupied or food-grade environments
- Handles thermal shock from steam, hot CIP water and freezer conditions without debonding
- Resists food acids, alkalis, oils and routine cleaning chemicals
- Seamless, jointless finish with no cracks or grout lines for bacteria to hide in
- High 7-12 mm build carries forklift and impact loads that thin coatings cannot
- More moisture-tolerant than epoxy, allowing earlier application on green or damp slabs
- Anti-slip aggregate option gives safe grip on wet and greasy floors
Limitations & considerations
- Trowel application at 7-12 mm is labour-intensive and needs experienced applicators for a true, flat finish
- Not a thin decorative coating; the build and cost are aimed at genuine heavy-duty duty, not light commercial floors
- Colour and gloss are secondary to durability, and shade can vary batch to batch
- Requires proper mechanical surface preparation and the correct moisture-tolerant primer, or the bond will suffer
- Sound, adequately cured concrete of suitable strength is needed as a base; it will not rescue weak or moving slabs
- Pot life is limited once mixed, so bay sizes must be planned to what a crew can lay in time
Selection & best practice
Start with the substrate: mechanically grind or shot-blast the concrete to a sound, slightly textured, contaminant-free surface and confirm it is structurally adequate. Terminate the screed properly at walls, columns, trenches, drains and expansion joints by anchoring it into cut-in keys rather than feathering it to a thin edge. Prime with the appropriate STP moisture-tolerant primer for the slab condition, and mix the full four-component pack in the stated sequence with a power stirrer until homogeneous, never splitting or part-mixing units. Plan bays to an area the crew can trowel and finish within the pot life, and broadcast anti-slip aggregate into wet areas while the screed is still workable. Keep substrate and ambient temperatures within STP’s stated window, protect the fresh floor from water and traffic during cure, and clean all tools immediately with STP Thinner before the material sets. Always confirm exact dosage, primer selection and cure times against the current STP technical data sheet for the project conditions.
Specifications
| Product type | Four-component solvent-free polyurethane cement (PU concrete) screed |
| Chemistry | Hybrid polyurethane cement technology |
| Application thickness | 7-12 mm (extreme high build) |
| Application method | Trowel applied |
| Pack size | 17.6 kg unit pack, all four components in one carton |
| Finish | Seamless, jointless; anti-slip aggregate option for wet areas |
| Substrate condition | Tolerant of green or damp concrete with a suitable moisture-tolerant primer |
| Tool cleaning | Clean immediately after use with STP Thinner |
| Storage | Store under cover, out of direct sunlight; air-conditioned storage in tropical climates |
Industry use cases
Food & Beverage Processing
Wet production halls that are hosed and CIP-cleaned every shift get a seamless, acid- and wash-down-resistant floor with no joints for bacteria.
Breweries & Distilleries
Handles routine spillage of sugars, acids and alcohol plus hot-water cleaning, keeping fermentation and bottling floors hygienic and intact.
Cold Storage & Cold Chain
Stays bonded and stable through freezer temperatures and the thermal shock of moving between chilled and ambient zones.
Dairy & Meat Processing
Resists lactic and other food acids, fats and constant sanitation, giving inspectors the cleanable, monolithic surface hygiene codes demand.
Chemical & Containment Areas
The dense, low-porosity screed shrugs off acid and alkali contact, suiting secondary containment and chemical handling bays.
Frequently asked questions
How is ShaliFloor 4 PUS different from an epoxy floor?
Can it be applied over damp or new concrete?
What thickness and pack size should I plan for?
Will it handle forklift traffic and impact?
Is it safe and hygienic for food-contact environments?
Do I need specialist applicators?
How we position STP ShaliFloor 4 PUS
Within the STP ShaliFloor family, choose ShaliFloor 4 PUS when the floor faces genuine wet-process, thermal-shock or heavy-traffic abuse; for lighter-duty areas an epoxy self-levelling system such as ShaliFloor Screed (a four-component epoxy underlay) or an epoxy top-coat is more economical, and STP’s ShaliPrime primers are used to prepare the slab. For grip in wet zones, pair it with the anti-slip aggregate option. If you are standardising on a single brand across a site, Space Arc also supplies equivalent heavy-duty PU cement floors from Fosroc and Master Builders Solutions, plus epoxy and PU coatings across our range, so we can match the flooring to the exposure rather than force one product onto every area.
Fosroc Nitoflor Floorcrete PU — Specify the Fosroc option when the project is standardised on Fosroc or a consultant has named a Nitoflor system, as it is a directly equivalent cementitious polyurethane floor topping for the same heavy-duty hygienic applications.
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Authorised distribution, technical advice & professional application across Delhi NCR and Pan-India.