Frequently Asked Questions

A developer is fitting out a 4,000 square metre automotive showroom and service facility in Noida and is comparing MC-Floor PU aliphatic polyurethane topcoat versus a standard aromatic epoxy topcoat for the showroom floor finish — the showroom has a fully glazed south-facing facade with floor-to-ceiling glass and direct afternoon sunlight penetrating the interior — what is the 5-year total cost of ownership comparison between the two systems including initial application, expected service life, and maintenance recoating, and why is aliphatic PU the correct specification for this project?

A south-facing glazed automotive showroom in Noida is one of the most UV-hostile interior floor environments in Indian construction — the floor will be exposed to several hours of direct or near-direct sunlight daily for 8 to 10 months per year (October to July), UV index 8 to 12 in summer months, and the floor must maintain the showroom-grade high-gloss appearance for which the client is paying a premium floor coating specification. The 5-year total cost of ownership comparison and the technical justification for aliphatic PU are as follows. Aromatic epoxy topcoat (standard amine-cured epoxy, marketed as floor topcoat): the aromatic amine hardener in standard epoxy topcoats undergoes a UV-initiated photo-oxidation reaction (specifically photo-Fries rearrangement and Norrish reactions) when exposed to UV radiation — the amine oxidation products are chromophoric (light-absorbing) compounds that appear as a yellow-amber discolouration in the cured film. In a north Indian showroom with high UV exposure: yellowing begins visibly at 3 to 6 months after installation; significant golden-yellow discolouration is visible at 12 months — at this point the showroom floor no longer presents as a white or light grey high-gloss surface but as a cream to amber floor that conflicts with premium brand standards; at 24 to 36 months, the aromatic epoxy topcoat also begins to chalk (surface degradation under UV produces a powdery surface layer that reduces gloss and increases contamination pickup) — the floor now requires either complete stripping and recoating or a maintenance topcoat application to restore appearance. Recoating cost for 4,000 m2: complete diamond grinding, MC-Floor 2K EP primer recoat, aromatic epoxy topcoat recoat approximately 350 to 500 rupees per square metre (including labour and material at Delhi NCR market rates) = 14 to 20 lakh rupees. Frequency: 2 to 3 full recoats in 5 years for an aromatic epoxy topcoat in this exposure. 5-year total cost — aromatic epoxy scenario: initial application 4,000 m2 at 250 rupees per m2 topcoat material = 10 lakh; recoat at 24 months = 14 to 20 lakh; recoat at 48 months = 14 to 20 lakh; total 5-year cost approximately 38 to 50 lakh rupees. Plus: commercial cost of degraded appearance (customer perception of premium brand in a yellowed, chalky floor showroom — impossible to quantify but commercially significant). MC-Floor PU aliphatic polyurethane topcoat: the aliphatic isocyanate (HDI or IPDI) hardener does not contain the aromatic ring structure that undergoes UV photo-oxidation — the aliphatic PU film is transparent to UV without absorbing energy and producing chromophoric degradation products. In the same south-facing Noida showroom with identical UV exposure: aliphatic PU topcoat retains its original colour (colour shift Delta E less than 1 to 2 CIELAB units) and gloss (GU above 75) for 5 to 7 years in direct interior sunlight; at 5 years, only minor dulling at highest-traffic zones (vehicle turning areas, showcase spotlights) — a maintenance recoat of the PU topcoat (single coat, 4,000 m2, approximately 180 to 220 rupees per m2 material only) restores full appearance. 5-year total cost — MC-Floor PU aliphatic scenario: initial application 4,000 m2 at topcoat material cost approximately 380 to 420 rupees per m2 for aliphatic PU versus 200 to 250 rupees per m2 for aromatic epoxy (aliphatic PU is 60 to 80 percent more expensive material per unit area); total topcoat material initial application = 15 to 17 lakh rupees (versus 10 lakh for aromatic epoxy — initial cost premium 5 to 7 lakh rupees); maintenance recoat at 5 years (single light coat, 4,000 m2) = 7 to 9 lakh rupees versus 14 to 20 lakh for full epoxy strip and recoat; total 5-year cost approximately 22 to 26 lakh rupees. Summary: MC-Floor PU costs 22 to 26 lakh over 5 years in this application versus 38 to 50 lakh for aromatic epoxy — a saving of 16 to 24 lakh rupees over 5 years despite higher initial material cost, entirely because the aliphatic PU eliminates the UV-yellowing recoating cycle. Add the commercial benefit of maintaining showroom-grade floor appearance throughout the 5-year period, and the specification case for MC-Floor PU in any south-facing glazed showroom in India is technically and commercially decisive. System specification: MC-Floor 2K EP primer at 0.3 kg per m2 + MC-Floor SL self-levelling epoxy base at 2.0 kg per m2 (1.5 to 2.0 mm dry film) + MC-Floor PU topcoat two coats at 0.2 kg per m2 per coat = complete showroom floor system. Space Arc Engineering supplies MC-Floor PU, MC-Floor SL, and MC-Floor 2K EP as a complete floor coating system for automotive showrooms, pharmaceutical facilities, and commercial spaces in Noida, Ghaziabad, Delhi NCR, and Uttar Pradesh.