MC-Bauchemie MC-DUR 1120 SL-IN
A three-component pigmented epoxy self-levelling system engineered for a genuine 2 mm seamless floor — chemical- and diesel-resistant, and built for plants, forecourts and wash bays that can’t afford grout lines.
What is it?
A three-component, pigmented epoxy resin self-levelling (SL) flooring system designed and tested for a 2 mm seamless topping over structural concrete.
Where is it used?
Petrol forecourts, car parks, garages and car-wash bays; food, dairy, pharmaceutical and bottling plant floors; any mineral substrate that needs a jointless, chemical-resistant wear surface.
Why use it?
>50 N/mm2 compressive strength at 7 days, resistance to diesel, dilute acids/alkalis and numerous organic solvents, and a smooth, seamless, easy-to-clean cured film.
How is it applied?
Primed substrate (MC-DUR range primer, with a quartz-filled scratch coat on porous concrete) is topped with the mixed three-part epoxy, poured and spread to 2 mm DFT, de-aerated with a spiked roller, and optionally broadcast with quartz sand for slip resistance.
About MC-Bauchemie MC-DUR 1120 SL-IN
Most epoxy self-levelling (SL) floor coatings sold in India are two-component systems laid at 300-1000 microns. MC-DUR 1120 SL-IN is built differently: it’s a three-component, pigmented epoxy resin system — base resin, colour paste, hardener and a heavily loaded filler, mixed in a fixed 2.1 : 0.3 : 1.2 : 7.2 ratio by weight — engineered for a full 2 mm (2000-micron) dry film build in one pass. That filler loading is what pushes mixed density to 1.67 g/cc and gets the system past 50 N/mm2 compressive strength inside 7 days, figures a thinner, unfilled 2K coating usually doesn’t reach. MC-Bauchemie has sold this formulation in India for years; the current datasheet (edition MC/IND/R3/DEC2020) still notes it was “formerly known as MC Dur ESL 2000,” so it’s a renamed continuation of a system already at work on forecourts, wash bays and pharma and dairy floors across the country.
It earns its keep on floors that see diesel, dilute acids/alkalis and organic solvents routinely, and where the client wants a genuinely seamless, hose-down surface rather than a jointed one. It isn’t stand-alone, though: MC-Bauchemie designs it to run on an MC-DUR range primer, with a quartz-filled scratch coat first on porous concrete, and it needs a sound base — minimum 25 N/mm2 compressive strength, 1.5 N/mm2 pull-off, under 5% moisture, and at least 28 days’ curing. Skip that discipline and no epoxy system will hold. As an authorised MC-Bauchemie distributor and applicator, Space Arc supplies the matched primer and scratch-coat quartz alongside the coating and puts a trained crew on the mix, which matters where the sequencing of three components isn’t optional.
The technical insight
The three-component design is worth understanding before specifying this over a simpler 2K coating. Two-pack epoxy SL toppings get their build mostly from resin and hardener alone, which caps practical thickness before sagging or exotherm becomes a problem — most sit at 300-500 microns per coat. The filler here, dosed at 7.2 parts by weight against 2.1 parts resin, lets the system carry a full 2 mm DFT in one pour without the shrinkage or pinholing a straight resin/hardener mix would show at that build. The trade-off is a shorter, heat-sensitive pot life — 60-90 minutes at 30°C, which compresses fast on an Indian summer site — so batch size has to match what the crew can pour and de-air before the mix sets. The other figure worth flagging to site supervisors: substrate and air temperature must stay 3 K above the dew point during application, on top of the usual 10-30°C/≤85% RH window. That dew-point margin is easy to miss on early-morning pours in humid cities and is a common, avoidable cause of surface blooming on epoxy floors generally.
Where it is used
- Petrol pump forecourts and fuel-dispensing bays exposed to diesel and petrol spillage
- Multi-level car parks and covered parking decks
- Vehicle service centres, garages and car-wash bays
- Food processing, bottling and beverage plant floors
- Dairy plant floors needing frequent washdown
- Pharmaceutical manufacturing floors requiring a dust-free, seamless finish
- Chemical storage and handling area floors
- General industrial and warehouse floors on mineral substrates needing a jointless wear surface
Key advantages
- Genuine 2 mm build in a single system, thick enough to bridge minor substrate blemishes a 300-500 micron coating would telegraph through
- >50 N/mm2 compressive strength inside 7 days, with Shore D hardness of 74 at the same age
- Broad chemical resistance — diesel, dilute acids/alkalis, and numerous organic solvents — per MC-Bauchemie’s own data
- Fully seamless, coving-capable finish with no grout lines to trap oil, food debris or bacteria
- Good adhesion to concrete, steel and masonry, so one pour can run across mixed substrates
- Anti-slip texture is tunable on site via quartz-sand broadcast while the coat is still fresh
- Available in custom pigment shades rather than a fixed, limited palette
- A known, long-serving formulation (continuity from MC Dur ESL 2000) rather than an unproven grade
Limitations & considerations
- Substrate prep tolerances are strict and non-negotiable — 25 N/mm2 minimum concrete strength, 1.5 N/mm2 pull-off, under 5% moisture, 28 days cured; get any of these wrong and adhesion fails regardless of the coating
- Pot life of just 60-90 minutes at 30°C shrinks further in peak Indian summer heat, so crew size and batch quantity need planning in advance
- Three-component, sequenced mixing (base+pigment, then hardener, then filler) needs a trained applicator and a controlled-speed paddle mixer — not a floor for untrained labour
- Full chemical and mechanical service life needs 7 days’ cure at 20°C; pushing vehicles or aggressive chemicals onto it earlier risks premature wear
- Like most epoxy floor systems, it isn’t formulated for permanent direct sunlight — sustained UV exposure will chalk and amber a pigmented epoxy over time, so sun-exposed open decks are better specified with a UV-stable topcoat or a PU system
Selection & best practice
Confirm concrete strength and moisture before ordering material: >25 N/mm2 compressive strength, ≥1.5 N/mm2 pull-off, under 5% moisture, on a substrate at least 28 days old. Always prime with an MC-DUR range primer, adding a quartz-filled (0.1-0.3 mm) scratch coat at 1:1 if the concrete has pinholes the primer alone won’t fill. Mix in sequence — base and colour paste first, hardener next, filler last — with a slow paddle mixer under 300 rpm to limit entrained air, then pour, spread and de-aerate with a spiked roller inside the 60-90-minute pot life. Hold substrate and air temperature 3 K above the dew point throughout, stay within 10-30°C/≤85% RH, and broadcast anti-slip quartz while the coat is still wet if needed. Clean tools only with MC-Thinner EP — never water or water-based cleaners.
Specifications
| Chemistry / system | Three-component, pigmented epoxy resin, self-levelling (SL) flooring |
| Mixed density | 1.67 ± 0.05 g/cc |
| Compressive strength | >50 N/mm2 at 7 days |
| Pot life | 60-90 minutes @ 30°C |
| Dry film thickness | 2000 microns (2 mm) per coat |
| Coverage | 3.4 kg/m2 per coat |
| Shore D hardness | 60 at 1 day / 74 at 7 days |
| Full cure | 7 days @ 20°C |
| Pack size | 25.5 kg kit (Resin 4.96 : Colour paste 0.71 : Hardener 2.83 : Filler 17.00 kg) |
Industry use cases
Fuel retail & automotive
Petrol station forecourts, car-wash bays and garage service floors where spilled diesel/petrol and oils meet daily foot and wheel traffic.
Food & beverage / dairy processing
Bottling lines and dairy floors needing a seamless, hose-down surface that resists dilute acids and cleaning chemicals.
Pharmaceutical manufacturing
Production floors where a dust-free, chemically inert, jointless finish supports hygiene and GMP housekeeping.
Multi-level car parks
Deck areas exposed to tyre wear, fuel drips and washdown water, where a 2 mm build gives real abrasion margin over thin coatings.
General industrial / warehouse floors
Mineral-substrate floors needing chemical resistance and a smooth, cleanable wear surface without exotic performance demands.
Frequently asked questions
Is MC-DUR 1120 SL-IN the same as the old MC Dur ESL 2000?
How thick does the finished floor come out?
Can I apply this directly onto bare concrete?
How long before the floor can take vehicle traffic?
What’s the pack size and how is it supplied?
Is there a Fosroc equivalent if MC-DUR isn’t available?
How we position MC-Bauchemie MC-DUR 1120 SL-IN
MC-DUR 1120 SL-IN sits in MC-Bauchemie’s SL flooring family alongside the thinner-film MC-DUR 1105 SL-IN and MC-DUR 1110 SL-IN, and runs on an MC-DUR range primer (MC-DUR EP or MC-DUR 1200 VK IN); where the base concrete needs levelling first, Space Arc pairs it with an MC-Floor Screed underlayment rather than mixing brands mid-system. Sika’s nearest counterpart is the Sikafloor MultiDur ES series; on the Fosroc side, Nitoflor SL2000 is a genuine like-for-like alternative at a similar 2 mm build and ~50 N/mm2 compressive-strength class, worth quoting when a specification is brand-agnostic or MC-Bauchemie lead times don’t suit the schedule.
Fosroc Nitoflor SL2000 — Choose Nitoflor SL2000 when the specification is brand-agnostic or MC-Bauchemie lead times don’t fit the schedule — it’s a comparable 2 mm self-smoothing epoxy topping rated to a similar ~50 N/mm2 compressive strength at 7 days.
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