MC-Bauchemie MC-DUR 1200 VK IN
The transparent epoxy primer and binder MC-Bauchemie’s Indian flooring systems are built on — from the first coat on bare concrete to heavily filled mortar toppings.
What is it?
A solvent-free, two-component, low-viscosity epoxy resin (3:1 resin to hardener by weight) used as a primer, bonding coat and mineral-aggregate binder in industrial resin flooring.
Where is it used?
Warehouses, factory floors, workshops, parking decks, and pharma or food-grade plants — wherever a resin floor build-up needs a primer coat or an aggregate-filled mortar base.
Why use it?
One transparent resin covers primer, bonding coat and, filled with quartz sand, load-bearing mortar duty — fewer separate products for the crew to stock and sequence on site.
How is it applied?
By rubber squeegee or roller as a primer at roughly 300 g/m²; or gauged with oven-dried 0.1–0.3 mm quartz sand at ratios from 1:1 up to 1:15 by weight for scratch, levelling and structural screeds.
About MC-Bauchemie MC-DUR 1200 VK IN
MC-DUR 1200 VK IN is MC-Bauchemie’s India-manufactured version of its established MC-DUR 1200 VK universal epoxy, sold through MC-Bauchemie (India) Pvt Ltd, Navi Mumbai, and supplied to applicators like Space Arc across Delhi NCR and pan-India. It isn’t a decorative topcoat — it’s the connective layer of a resin flooring system: the primer that keys onto shot-blasted concrete, the bonding coat that ties a fresh screed to an old one, and, loaded with quartz sand, the binder for scratch coats and epoxy mortars. At 600 mPa·s viscosity it flows into surface pores more readily than a filled or pigmented resin would, which is exactly what a primer needs to do — anchor mechanically before anything is built on top.
Its real strength on Indian sites is fillability. The same resin, mixed with oven-dried 0.1–0.3 mm quartz sand, becomes a self-levelling mortar at a 1:3 ratio, or a dense trowel-mortar up to 1:15 where a floor takes forklift traffic, machine bases or repeated point loading. That range carries a project from priming a shot-blasted slab through to a thick epoxy mortar underlayment, with only the topcoat changing between MC-DUR’s coating and self-levelling ranges. It simplifies BOQs for specifiers and means fewer products for site teams to store, mix and sequence.
The technical insight
The figure worth watching on the India TDS is the substrate moisture ceiling — residual moisture must be 6% or under by the CM (calcium carbide) method before priming, with a minimum pull-off strength of 1.5 N/mm² on the prepared concrete. That’s a stricter bar than many contractors budget time for, and a common reason epoxy primers fail on Indian sites: slabs cured in monsoon season or laid over weak damp-proofing don’t meet it without extended drying. Working conditions are equally tight — 10–30°C air/material/substrate temperature, under 85% relative humidity, and the surface at least 3K above dew point — so monsoon-season or early-morning pours in North India need a documented site-condition check, not a guess, before the squeegee comes out.
Where it is used
- Primer coat on shot-blasted concrete ahead of solvent-free epoxy or PU floor coatings
- Scratch and levelling coat, gauged 1:1 by weight with 0.1–0.3 mm quartz sand
- Bonding/tack coat between an existing slab and a freshly laid screed, applied fresh-in-fresh
- Binder for self-levelling epoxy mortar toppings at filler ratios up to 1:3
- Binder for heavily filled, trowel-applied epoxy mortar (up to 1:15) under a sealer coat
- General bonding agent beneath reactive resin coatings and mortars in industrial areas
- Priming and coving on sloped or vertical junctions, gauged with MC-Thixotropic Agent TX 19
- Foundation layer for warehouse, factory and workshop resin flooring build-ups
Key advantages
- Low 600 mPa·s viscosity penetrates concrete pores for a real mechanical key, not a surface film
- Transparent formulation lets the applicator see substrate porosity and coverage while priming
- One resin covers primer, bonding coat and mortar-binder duty — fewer SKUs to manage on site
- Solvent-free, which suits indoor, occupied or poorly ventilated industrial spaces
- Made and stocked in India (Navi Mumbai) rather than imported, helping lead times and batch consistency on large projects
- 12-month shelf life in sealed packs eases scheduling across multi-phase site programmes
- Fillable up to 1:15 with quartz sand, stretching into heavy-duty mortar duty without switching products
- Backed by MC-Bauchemie’s published Application Advice leaflets for substrate prep and reactive resins
Limitations & considerations
- Needs genuinely prepared concrete — shot-blasted, moisture 6% or under, 1.5 N/mm² pull-off — not tolerant of damp or laitance-covered slabs
- Narrow working window (10–30°C air/substrate/material temperature, under 85% RH, 3K above dew point) needs real monitoring in Indian monsoon or peak summer
- Roughly 100-minute pot life at 20°C shortens further on hot Indian sites, so batch sizes need planning around ambient temperature
- Must be overcoated within 24 hours or broadcast with quartz sand, or the bond to the next layer suffers
- It’s a primer/binder, not a finished wearing surface — always needs a coating, screed or topping system over it
- Clear and unpigmented, so there’s no visual cue in the finished floor to confirm even coverage without careful site records
Selection & best practice
Confirm substrate readiness before opening a pack — shot-blast to remove laitance, check residual moisture with a CM test (6% or under), and pull-test for the 1.5 N/mm² minimum. Prime by squeegee or roller at the site temperature the data sheet specifies, and broadcast the wet primer with oven-dried quartz sand if the next layer can’t follow within 24 hours. For scratch and levelling coats, pre-weigh the 1:1 quartz-sand gauge rather than eyeballing it, and on ramps or coving details add MC-Thixotropic Agent TX 19 so the mix doesn’t slump before it cures. Mix only what the crew can place inside the pot life — Indian summer slab temperatures eat into working time faster than the data sheet’s 20°C baseline suggests.
Specifications
| Chemistry | Two-component, solvent-free universal epoxy resin (primer/binder) |
| Mixing ratio | 3:1 by weight (resin : hardener) |
| Density | 1.1 g/cm³ |
| Viscosity | 600 mPa·s (20°C, 50% RH) |
| Pot life | Approx. 100 minutes (20°C, 50% RH) |
| Resistance to foot traffic | Approx. 12 hours (20°C, 50% RH) |
| Full cure / resistance | 7 days (20°C, 50% RH) |
| Coverage | Primer approx. 300 g/m²; bonding coat 300–500 g/m² |
| Pack sizes | 6×1 kg, 5 kg, 10 kg, 30 kg |
Industry use cases
Warehousing & Logistics
Primer and bonding coat ahead of self-levelling epoxy toppings on distribution-centre floors carrying forklift and racking loads.
Manufacturing / Factory Floors
Heavily filled (up to 1:15) trowel-applied epoxy mortar underlayment in bays subject to machine loads and repeated point loading.
Pharma & Food Processing
Primer coat beneath hygienic, seamless resin flooring where a dust-free, well-bonded substrate is a documented QA requirement.
Parking Structures & Ramps
Bonding and priming coat on decks and ramps, gauged with thixotropic agent on sloped sections before the wear coat goes down.
Industrial Floor Refurbishment
Bonding agent tying a new epoxy screed to an existing, mechanically prepared concrete substrate during floor renovation work.
Frequently asked questions
Is MC-DUR 1200 VK IN a complete floor coating on its own?
How is MC-DUR 1200 VK IN different from the international MC-DUR 1200 VK?
Can this be applied over a slightly damp concrete slab?
How much MC-DUR 1200 VK IN do I need for a 1,000 sqm warehouse floor?
When can the floor be walked on, and when is it fully cured?
Is there a Fosroc alternative if MC-DUR 1200 VK IN isn’t available?
How we position MC-Bauchemie MC-DUR 1200 VK IN
Inside MC-Bauchemie’s own range, MC-DUR 1200 VK IN is the foundation coat that specifiers pair with a pigmented wear layer such as MC-DUR 1800 or a self-levelling MC-DUR topping, keeping primer and finish under one chemistry and one warranty rather than mixing brands within a single build-up. Where a project is already committed to a Fosroc-based flooring system, Fosroc’s Nitoprime 25 plays a comparable primer role beneath Nitoflor toppings — though it’s solvent-containing rather than solvent-free, so it’s a genuine alternative system rather than an interchangeable component, and switching between the two mid-project isn’t something Space Arc would recommend without re-checking compatibility with whatever topcoat is going over it.
Fosroc Nitoprime 25 — Specifiers already committed to a Fosroc Nitoflor topping system typically pair it with Nitoprime 25 rather than mixing brands within one flooring build-up, even though MC-DUR 1200 VK IN’s solvent-free formulation suits occupied or enclosed spaces better.
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