MC-Bauchemie MC-DUR EPW
A two-component, solvent-free epoxy coating built for potable water tanks, reservoirs and food-contact structures — CFTRI food-grade certified, and engineered to seal concrete and steel against water, corrosion and everyday chemical attack.
What is it?
A two-component, 100% solids epoxy resin coating from MC-Bauchemie’s MC-DUR range, CFTRI-certified food grade so the cured film can safely hold drinking water or food.
Where is it used?
Drinking-water tanks, reservoirs and sumps, and vessels handling food, dairy, brewery or food-processing materials, coated over prepared concrete or mild steel across Delhi NCR and Pan-India.
Why use it?
It turns porous concrete or bare steel into a smooth, non-toxic lining that will not taint stored water or food, while resisting abrasion, chemicals and washdown.
How is it applied?
Resin and hardener are mixed 85:15 by weight, then brushed or rollered over MC-DUR EPW Primer in two crossed coats to the specified minimum wet-film thickness.
About MC-Bauchemie MC-DUR EPW
MC-DUR EPW is a two-component, solvent-free epoxy resin coating from MC-Bauchemie’s MC-DUR programme, built for structures that hold potable water or food. Where a general industrial epoxy is chosen for abrasion resistance and cost, MC-DUR EPW is chosen for one reason: its cured film is certified food grade by CFTRI (Central Food Technological Research Institute), so it can legitimately line a drinking-water tank, an RCC sump, or a brewery, dairy or meat-processing vessel without tainting what it holds. It is a Duromer coating — resin and hardener cross-link into a dense film — giving genuine adhesion to concrete and steel, plus the strength the data sheet documents (tensile strength 20-25 MPa to ASTM D638).
An ordinary industrial epoxy is never certified for potable-water contact, and specifying the wrong grade on a drinking-water tank is a compliance failure, not a minor substitution. Space Arc supplies and applies MC-DUR EPW as an authorised MC-Bauchemie distributor across Delhi NCR and Pan-India, confirming current coverage, pot life and cure figures against the live datasheet for each project batch.
The technical insight
The performance rests on epoxy cross-linking chemistry plus a food-grade formulation. An amine hardener reacts with the resin base at a fixed 85:15 ratio, forming a dense polymer network rather than a solvent-evaporation film. Because the system is 100% solids (ASTM D2697), there is no solvent to flash off and negligible shrinkage — important where the lining must stay pinhole-free under standing water pressure. The two-coat, cross-hatched method — first coat one way, second at right angles once dry — statistically closes any holidays a single pass would leave, and a pinhole in a potable-water lining is a defect, not a cosmetic flaw. The formulation is also what earns CFTRI certification: the cured system is tested and cleared as non-toxic for drinking water and food contact, a stricter bar than plain chemical resistance.
Where it is used
- Structural lining and waterproof coating for overhead and underground potable (drinking) water tanks
- Protective, non-tainting lining for tanks and vessels holding food and food-processing materials
- Internal coating of RCC sumps, clear-water reservoirs and water-treatment structures
- Corrosion-resistant coating on mild-steel tanks and pipework in water and food-contact duty
- Lining for breweries, dairies and meat- and food-processing plant vessels
- Re-lining ageing potable-water and food-storage tanks after removing failed coatings
- Protective coating on concrete surfaces needing a smooth, easy-to-clean finish
- Silo and storage-vessel linings where a hygienic, CFTRI-certified surface is specified
Key advantages
- CFTRI food-grade certified — cleared for potable water and food contact, not just chemically resistant
- 100% solids / solvent-free (ASTM D2697) — no solvent odour or taint risk inside a closed tank
- Good chemical and high abrasion resistance (tensile strength 20-25 MPa, ASTM D638)
- Bonds well to both concrete and steel, so one system lines mixed-substrate tanks
- Cures to a smooth, seamless, easy-to-clean film
- Available in the project’s required shade, aiding visual inspection of the lining
- Fast build — touch-dry in 2 hours, full dry in 24 hours (ASTM D1640)
- Supplied and applied by Space Arc as an authorised MC-Bauchemie distributor Pan-India
Limitations & considerations
- Must be applied over MC-DUR EPW Primer — not specified as a standalone, primerless coating
- Short pot life (20-30 minutes at 27°C) once mixed, so batch size must match what the gang can lay
- Narrow window: work stops below +10°C, and also if surface temperature exceeds 35°C
- Waterproofing depends on the full two-coat, cross-directional build — shortcuts compromise it
- Steel needs demanding prep (SA 2½ blast-cleaning to DIN 55928 part 4); rust converters will not do
- It is a coating, not a repair material — honeycombs and unsound concrete need a Nafuquick-range mortar first
Selection & best practice
Treat substrate preparation as the deciding factor. Concrete must be fully cured, laitance-free and free of oil or old coatings, with honeycombs filled first using a Nafuquick-range mortar; steel must be blast-cleaned to SA 2½ per DIN 55928 part 4. Prime with MC-DUR EPW Primer first. Mix resin and hardener strictly at 85:15 by weight with a slow-speed paddle mixer (max. 300 rpm) for at least three minutes, avoiding air entrainment. Apply by brush or roller in two crossed coats at a minimum 100-micron wet film each. Watch temperature throughout: stop below +10°C or if the surface exceeds 35°C. Clean tools with MC-Thinner EP or MC-Clean EP, never water, and confirm current figures against the live datasheet for your batch.
Specifications
| Chemistry | Two-component, solvent-free, food-grade epoxy resin (Duromer) coating |
| Solid content | 100% (per ASTM D2697) |
| Mixing ratio | 85:15 by weight, resin : hardener |
| Pot life | 20-30 minutes at 27°C (per ASTM D2471) |
| Tensile strength | 20-25 MPa (per ASTM D638) |
| Elongation at break | 2-2.5% (per ASTM D638) |
| Coverage | 200-250 g/m² per coat at 100 micron DFT |
| Cure schedule | Touch dry 2 hrs; tack-free 8 hrs; full dry 24 hrs (per ASTM D1640) |
| Pack sizes | 5 kg and 20 kg |
Industry use cases
Water utilities & PHE
Lining overhead and underground drinking-water tanks with a CFTRI-certified, non-tainting film before commissioning.
Food & beverage processing
Coating tanks in breweries, dairies and meat-processing units where the lining must not affect the stored product.
Infrastructure & treatment works
Protecting RCC sumps and clear-water structures at treatment plants against chemical exposure.
Industrial tankage
Lining mild-steel tanks and pipework, combining corrosion protection with food-grade compliance.
Refurbishment
Re-lining ageing potable-water tanks after stripping failed coatings back to sound substrate.
Frequently asked questions
Is MC-DUR EPW safe for drinking water once cured?
Does it need a separate primer?
How many coats does it need, and why?
What is the working time once mixed?
Can it be applied to mild steel as well as concrete?
How does it differ from a standard industrial epoxy like MC-DUR 300?
How we position MC-Bauchemie MC-DUR EPW
MC-DUR EPW sits in the food-grade, potable-water corner of MC-Bauchemie’s protective-coatings range, alongside MC-DUR EPW Primer (its mandatory partner) and general-purpose siblings such as MC-DUR 300 and MC-Floor EP, which resist chemicals but carry no drinking-water certification. Where the substrate needs rebuilding first, pair it with a Nafuquick-range repair mortar rather than expecting the coating to fill defects. Specifiers needing IS 9833 rather than CFTRI certification can consider Fosroc’s Nitocote EP405, the equivalent food-grade epoxy tank lining.
Fosroc Nitocote EP405 — A specifier standardised on Fosroc, or one whose consultant specifically calls for IS 9833 certification rather than CFTRI food-grade approval, may prefer Nitocote EP405 as the direct equivalent for potable-water and food-contact tank linings.
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