About MC-Bauchemie MC-DUR 1100

MC-DUR 1100 belongs to MC-Bauchemie’s MC-DUR family of two-component epoxy floor systems, the same product line that includes the 1101 water-based binder and the 1150 VK penetrating primer. In practice it does the unglamorous but decisive job in any resin-floor build-up: it is the primer coat. Concrete straight off the trowel is porous, dusty and chemically unfriendly to a resin topping. MC-DUR 1100 soaks into that open surface, binds the loose fines, closes the capillaries and leaves behind a thin, hard, chemically anchored epoxy film. Everything applied afterwards, whether a self-levelling coat, a scratch coat or a broadcast quartz screed, keys into that film rather than into weak laitance.

For engineers and applicators the appeal is reliability rather than novelty. Adhesion failures, pinholing and blistering in industrial floors almost always trace back to what happened at the primer stage, not the topcoat. Because MC-DUR 1100 is solvent-free and low in viscosity, it wets the substrate deeply and cures to a tough, aggregate-fillable base that tolerates the mechanical and chemical loads of a working floor. Space Arc supplies it across Delhi NCR and Pan-India as part of a complete MC-Bauchemie flooring package, so the primer, body coat and sealer come from one compatible system rather than a mix of brands that may not bond to each other.

The technical insight

The mechanism is straightforward but easy to get wrong on site. A cured concrete slab carries a thin, weakly bonded layer of laitance and fine dust at its surface; a resin coating laid directly onto it is effectively glued to that weak layer, not to the sound concrete underneath. MC-DUR 1100 is formulated at a low viscosity so that, once Parts A and B are mixed and the reaction begins, the still-fluid resin is drawn into the open pore network by capillary action before it gels. As it cures, the epoxy polymerises around and through the surface fines, converting a dusty, porous face into a monolithic, mechanically continuous layer. That is why priming both consolidates the substrate and seals it: the same penetration that binds the dust also blocks the pores that would otherwise draw solvent or air out of the topping and cause pinholes. Broadcasting kiln-dried quartz sand into the wet primer adds a second effect, giving the next coat a rough, high-surface-area profile to grip, which is essential under thicker self-levelling and screed build-ups.

Where it is used

• Primer coat under MC-Bauchemie epoxy and polyurethane floor coatings and self-levelling systems
• Pore-sealing and dust-binding treatment on new or existing concrete and cement screeds
• Bonding coat beneath epoxy scratch coats, levelling mortars and broadcast quartz screeds
• Consolidation of weak or slightly friable concrete surfaces before topping
• Substrate preparation in warehouses, factories and logistics floors
• Priming in pharmaceutical, food-processing and beverage plants requiring hygienic resin floors
• Base coat for car park decks, workshops and machine-shop floors
• Anti-dust treatment where a simple sealed, low-shedding surface is required

Key advantages

• Solvent-free formulation with low odour, suitable for enclosed and occupied buildings
• Low viscosity gives deep penetration and strong mechanical anchorage into concrete
• Binds surface dust and consolidates porous or weak substrates
• Creates a chemically bonded film that resists delamination of the topping
• Can be filled with quartz aggregate to serve as a scratch coat or keyed base
• Compatible within the MC-DUR system, so primer and topcoat bond as one build-up
• Seals pores to reduce pinholing and outgassing in the finished floor
• Applies easily by roller or brush without specialist equipment

Limitations & considerations

• A primer, not a finish coat; it must be overcoated within the system’s recoat window
• Sensitive to substrate moisture and rising damp; slabs above the moisture limit need a damp-tolerant primer instead
• Will not cure reliably below roughly 10 C or when the surface is near dew point
• Requires proper surface preparation (grinding or shot-blasting); it cannot bond over laitance, curing compounds or contamination
• Pot life is limited once mixed, so only usable quantities should be combined at a time
• Not a standalone wearing surface and offers no decorative finish on its own

Selection & best practice

Specifications

Industry use cases

How we position MC-Bauchemie MC-DUR 1100

MC-DUR 1100 is the entry point to a complete MC-Bauchemie floor build-up rather than a standalone product, and it is best specified alongside its own family: an MC-DUR epoxy coating or self-levelling system as the body coat, and a compatible sealer on top. Where the slab is damp or only air-dried, the water-based MC-DUR 1101 binder is the more forgiving primer choice, while MC-DUR 1150 VK suits high-penetration priming and anti-dust work. Space Arc also stocks equivalent primers from other lines we distribute, including Fosroc for teams already specified into the Nitoflor and Nitocote flooring systems. Talk to us about matching the primer to the topping so the whole floor behaves as one bonded system.

Related Protective Coatings products

View all Protective Coatings products →