MC-Bauchemie MC-Floor 2K EP
A 100% solids, two-component epoxy primer that penetrates prepared concrete and builds the adhesion bond every industrial floor coating depends on.
What is it?
A two-component, solvent-free epoxy primer (resin plus amine hardener) used as the first coat under industrial epoxy and PU floor systems on concrete.
Where is it used?
Warehouse slabs, pharma and food-grade production floors, workshops and any new or aged concrete that will receive an epoxy topping.
Why use it?
It soaks into the pore structure and locks the coating to the slab, so the finished floor resists blistering, peeling and delamination under traffic.
How is it applied?
Shot-blast or diamond-grind the slab to CSP 2-3, mix A and B to the stated ratio, roller-apply in two directions, then overcoat within the recoat window.
About MC-Bauchemie MC-Floor 2K EP
MC-Floor 2K EP is the primer stage of MC-Bauchemie’s industrial epoxy flooring approach: a two-part, 100% solids epoxy that carries no solvent and cures to a hard, well-anchored base film. On its own it does nothing visible on a finished floor, yet it decides whether that floor lasts. Concrete is porous and dusty at the surface, and an epoxy self-leveller or coating laid straight onto bare slab will trap air, chase moisture and eventually let go. The primer’s job is to wet out and grip into the substrate first, giving the build coat a chemically compatible, fully bonded surface to sit on.
For engineers and applicators in Delhi NCR and across India, the appeal is practical. Being solvent-free, it can be used inside pharma cleanrooms, cold stores and food halls where solvent fumes are a non-starter, and it keeps VOC emissions effectively at zero. It penetrates a millimetre or two into a properly opened slab, and where a mechanical key is wanted under a thick screed, fine quartz sand can be broadcast into the wet film to leave a gritty profile. Get the primer right and the rest of the system behaves; skip it or rush it, and the topcoat inherits every weakness of the concrete beneath.
The technical insight
The performance comes from penetration plus cross-linking. Mixed at low viscosity, the resin flows into the capillary pores of a shot-blasted slab before it starts to gel, so once the amine hardener drives the epoxy to full cure you have a continuous polymer network mechanically interlocked with the concrete rather than merely resting on it. That is why a correctly primed floor shows pull-off failures inside the concrete itself rather than at the coating line. Because it is 100% solids there is no solvent to flash off and no shrinkage voids left behind, which matters in enclosed and controlled environments. The catch is that the same amine chemistry is temperature- and time-sensitive: the pot life is short once mixed, and the bond to the next coat relies on overcoating inside the recoat window while the primer film still has reactive surface chemistry. Miss that window and you are relying on a mechanical key alone, which is why the broadcast-sand option exists as insurance.
Where it is used
- Priming new concrete slabs before epoxy self-levelling or coating systems
- Priming and stabilising aged or previously coated floors after mechanical preparation
- Pharmaceutical and cleanroom floors where solvent-free, low-VOC systems are mandatory
- Food and beverage processing halls and cold-store slabs
- Warehouse, logistics and distribution-centre floors under heavy wheeled traffic
- Engineering workshops and assembly plants receiving chemical-resistant toppings
- Blinding coat with quartz-sand broadcast to key thick epoxy screeds
- Dust-binding and consolidation of weak, absorbent concrete surfaces
Key advantages
- Solvent-free, 100% solids formulation with effectively zero VOC emission
- Penetrates the concrete pore structure for a mechanical plus chemical bond
- Achieves cohesive failure in the concrete on pull-off testing, not at the interface
- Suitable for enclosed pharma, food and cleanroom environments
- Compatible base coat for MC-Bauchemie epoxy and PU floor build systems
- Accepts a quartz-sand broadcast to create a key for thick screeds
- Consolidates and dust-proofs weak or absorbent slabs
- Roller- or brush-applied with straightforward site handling
Limitations & considerations
- Short pot life once mixed, which shortens further as temperature rises above 30°C
- Bond to the next coat depends on overcoating within the recoat window
- Demands mechanical preparation to CSP 2-3 (shot-blast or grind) — acid etching alone is not enough
- Sensitive to substrate moisture and rising damp; concrete must be sound and adequately dry
- Amine cure slows and can bloom in cold or humid conditions, so low temperatures need care
- A primer only — it is not a wearing surface and must always be overcoated
Selection & best practice
Start with the slab, not the primer. Shot-blast or diamond-grind to a CSP 2-3 profile, remove laitance and dust, and confirm the concrete is sound and dry enough before you open a tin. Batch-mix only what you can lay within the pot life, combining component A and B thoroughly to the stated ratio and scraping the sides of the container so no unmixed resin streaks the floor. Apply with a short-nap (around 6 mm) roller in two directions to wet out the surface evenly, working wet edges and avoiding puddling in low spots. If a mechanical key is needed for a thick topping, broadcast fine quartz sand into the still-wet film. Above all, respect the recoat window: overcoat once the primer is tack-free but before the maximum overcoat time passes, and if the window is missed, lightly abrade and re-prime rather than trusting a weak bond. Work within the manufacturer’s temperature limits and always follow the current project-specific TDS and method statement.
Specifications
| Product type | Two-component, solvent-free epoxy primer (resin + amine hardener) |
| Solids content | 100% solids (solvent-free) |
| VOC content | Effectively zero |
| Consumption (as primer) | Approx. 0.2-0.4 kg/m² per coat, depending on substrate porosity |
| Substrate profile | CSP 2-3 (shot-blasted or diamond-ground) |
| Application method | Short-nap roller (approx. 6 mm) or brush, in two directions |
| Broadcast option | Fine quartz sand (approx. 0.2-0.4 mm) into the wet film |
| Cure system | Amine-cured; full chemical cure develops over several days at ~25°C |
| Function | Primer / intermediate coat — must be overcoated, not a wearing surface |
Industry use cases
Pharmaceutical & cleanrooms
Solvent-free, zero-VOC priming under seamless epoxy floors in GMP production and packing areas where fumes and dust are unacceptable.
Food & beverage processing
Base coat for hygienic epoxy systems in wet production halls, cold stores and packing floors that must resist washdown and traffic.
Warehousing & logistics
Consolidates and keys large slabs before hard-wearing epoxy coatings that take forklift and pallet-truck loads.
Engineering & manufacturing
Primes workshop and assembly floors receiving chemical-resistant toppings, binding surface dust and improving topcoat adhesion.
Refurbishment of aged floors
After grinding back old, tired coatings, re-establishes a sound bonded base so a new epoxy system can be built up reliably.
Frequently asked questions
Is MC-Floor 2K EP a finished floor coating?
Why can’t I just acid-etch the slab instead of grinding?
How much primer will I need per square metre?
What happens if I miss the overcoat window?
Can it be used in food and pharma areas?
Does it work on damp concrete?
How we position MC-Bauchemie MC-Floor 2K EP
MC-Floor 2K EP is the starting layer of a system, not a standalone product — it should always be specified alongside the MC-Bauchemie epoxy or PU build coats it primes for, so the primer, body coat and seal cure as one compatible stack. Within the MC-Bauchemie family, specifiers who want a faster site turnaround or low-temperature working often look at the MC-DUR primer range (such as the rapid-hardening MC-DUR primers) instead. Because Space Arc carries multiple flooring brands, we also cross-reference this primer against equivalent epoxy priming systems from Fosroc and Sika when a project is standardised on those specifications, so contractors can match whatever the consultant has called up without mixing incompatible chemistries.
Fosroc Nitoprime 25 — Choose the Fosroc option when the project is specified around the Nitoflor/Nitocote system or when a primer that tolerates slightly damp concrete is needed on humid or monsoon-affected sites.
Related Industrial Flooring products
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Authorised distribution, technical advice & professional application across Delhi NCR and Pan-India.