Fosroc Nitocote EP202
A solvent-free, two-component epoxy barrier coating built to hold the line against acids, alkalis and fuels on concrete and steel.
What is it?
A two-component, solvent-free epoxy protective coating from Fosroc that cures to a dense, chemically resistant film over concrete, steel and masonry.
Where is it used?
Chemical bunds, effluent channels, acid storage floors, battery and UPS rooms, and concrete tank linings where spillage and fumes attack ordinary surfaces.
Why use it?
It gives a seamless, low-porosity barrier that resists a broad band of industrial chemicals while staying solvent-free, so it can be laid in enclosed and poorly ventilated areas.
How is it applied?
Applied by brush, roller or airless spray in 2 to 4 coats over a primed, sound substrate to build a total dry film thickness of roughly 400 to 800 microns.
About Fosroc Nitocote EP202
Nitocote EP202 sits in Fosroc’s protective-coatings range as a chemically resistant epoxy barrier for surfaces that take real chemical punishment. It is supplied as a two-pack system – a base and a hardener that are mixed on site in the correct ratio – and it is solvent-free, so the mixed material cures by chemical reaction rather than by evaporating solvent away. That matters on Indian sites: bunds, pump rooms and treatment channels are frequently confined, and a solvent-free film means the coating can be laid and cured without the ventilation headaches and flammability concerns that come with solvented systems.
Once cured, EP202 forms a continuous, tightly cross-linked film that keeps aggressive liquids off the structure underneath. On concrete that means the acid, alkali or fuel never reaches the cement matrix or the reinforcement; on steel it means the substrate is shielded from corrosive contact. Space Arc supplies EP202 across Delhi NCR and pan-India and, as an authorised Fosroc applicator, also takes on the full scope – substrate assessment, priming, coat build-up and inspection – so the barrier that is specified on paper is the barrier that actually ends up on the floor.
The technical insight
The protection comes from the cured epoxy network itself. When base and hardener react, the amine hardener cross-links the epoxy resin into a dense three-dimensional polymer with very few open pores for liquids to travel through. That low permeability is the whole point: aggressive media sit on the surface as a film rather than wicking into the coating and reaching the substrate. Being solvent-free, there is no solvent leaving the film as it cures, so there is minimal shrinkage and no network of micro-voids left behind – the barrier stays coherent at the 400 to 800 micron thickness it is built to. Chemical resistance is broad but bounded by concentration: the film comfortably handles dilute mineral acids, common alkalis, diesel, petrol, kerosene, lubricating oils and saltwater, but concentrated strong acids, aromatic solvents and halogenated solvents will challenge any epoxy and call for a different lining. Getting the specified dry film thickness across every coat is therefore not cosmetic – it is what determines how long the barrier keeps the structure isolated from what it is holding back.
Where it is used
- Chemical containment bund and dyke coatings around tanks and process plant
- Concrete tank and vessel linings holding dilute acids, alkalis or effluent
- Effluent and wastewater treatment plant channels and sumps
- Acid storage area and dosing room floors
- Battery rooms and UPS rooms where electrolyte spillage is a risk
- Industrial floors subject to intermittent chemical and fuel spills
- Pump rooms and bunded areas in fuel and lubricant handling zones
- Protection of steel and masonry (with the correct primer) in corrosive plant areas
Key advantages
- Solvent-free formulation, so it can be applied and cured in confined, poorly ventilated bunds and plant rooms
- Broad chemical resistance across dilute mineral acids, common alkalis, fuels, oils and saltwater
- Seamless, low-porosity film with no joints for aggressive liquids to exploit
- Bonds to concrete, steel and masonry when the matching primer and preparation are used
- Flexible coat build (2 to 4 coats, 400 to 800 microns) lets the spec be tuned to the severity of exposure
- Applies by brush, roller or airless spray, suiting both small dosing rooms and large bund floors
- Protects both the concrete matrix and embedded reinforcement from chemical ingress
- Backed by Fosroc’s protective-coatings pedigree and Space Arc’s authorised application service
Limitations & considerations
- Not intended for continuous immersion in or contact with concentrated strong acids above roughly 30 to 40 percent
- Aromatic and halogenated solvents will attack the film and call for a specialist lining instead
- Performance depends heavily on achieving the specified dry film thickness across every coat
- Substrate must be sound, dry and correctly primed – it will not bond reliably over laitance, damp or contaminated surfaces
- As an epoxy, unprotected topcoats can chalk and lose gloss under prolonged direct UV, so it is a protective rather than a decorative-durable exterior finish
- Two-pack material has a limited working time once mixed and must be used within its pot life
Selection & best practice
Start with the substrate. Concrete should be at least 28 days old, sound and dry, with all laitance, curing compound and contamination removed by grit blasting or mechanical grinding, and any blowholes or defects made good before coating; steel and masonry need the primer Fosroc specifies for that substrate. Mix the full base and hardener packs together in the stated ratio – never part-packs by eye – and work the mixed material within its pot life, which shortens in hot Indian conditions. Build the film in the number of coats the exposure demands (typically 2 coats and 400 to 500 microns for battery rooms, 2 to 3 coats and 500 to 800 microns for chemical bunds), respecting the overcoating window between coats so each layer bonds to the last. Check wet film thickness as you go so the cured DFT lands in the target band, and allow full chemical cure before the surface is put into service or exposed to spillage.
Specifications
| Product type | Two-component, solvent-free chemically resistant epoxy coating |
| Base component | Epoxy resin |
| Curing agent | Amine-based hardener (two-pack, site-mixed) |
| Solvent content | Nil (solvent-free) |
| Total dry film thickness | 400 to 800 microns, over 2 to 4 coats per exposure |
| Application method | Brush, roller or airless spray |
| Suitable substrates | Concrete, steel and masonry (with appropriate primer) |
| Chemical resistance | Dilute mineral acids, common alkalis, diesel, petrol, kerosene, lubricating oils, water and saltwater |
Industry use cases
Chemical & process plants
Lining containment bunds and dykes so any tank leak or overflow is held on a resistant surface instead of soaking into concrete.
Water & effluent treatment
Coating treatment channels, sumps and tanks that carry effluent and dosing chemicals at working concentrations.
Power & data infrastructure
Protecting battery-room and UPS-room floors from acid electrolyte spillage in switchyards, plants and data centres.
Fuel & lubricant handling
Sealing pump rooms and bunded areas against diesel, petrol, kerosene and oil contact in depots and workshops.
Manufacturing floors
Guarding industrial floors that see intermittent chemical and fuel spills, keeping the slab intact and easier to clean.
Frequently asked questions
Is Nitocote EP202 solvent-free, and can it be used in closed areas?
Which chemicals does EP202 resist, and which does it not?
How many coats and what thickness should be applied?
What substrate preparation does it need?
Can EP202 be used on steel, or only concrete?
Does Space Arc only supply EP202, or also apply it?
How we position Fosroc Nitocote EP202
Within the Fosroc range, Nitocote EP202 is a chemically resistant barrier coating best kept for bunds, tank linings, acid areas and battery rooms where broad resistance to dilute acids, alkalis and fuels is the priority. Where the same surface must also hold water or resist hydrostatic conditions in tanks and treatment structures, Nitocote EP405 (a pigmented solvent-free epoxy lining) is often the better call; where a flexible, abrasion-resistant waterproofing membrane is wanted on concrete and steel, Nitocote EPS (an epoxy-polysulphide coating) is the natural sibling. For heavy-duty trafficked industrial floors that also take chemical spillage, pair the concept with a Nitoflor epoxy screed rather than a thin-film coating. Across our other brands, Dr. Fixit and STP offer comparable protective and lining systems, and MC-Bauchemie carries chemically resistant coatings for specifiers who prefer that source – Space Arc can advise on the closest equivalent to suit the spec, budget and lead time.
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