Elakor-PU Grunt-25 — repair polyurethane primer for old coatings
Bonding polyurethane primer for repairs: applied over old epoxy and polyurethane floors and very dense concrete.

The thixotropic enamel is applied mainly by airless spraying without thinner, and additionally by roller, brush or air spraying. It forms a weather-resistant and lightfast protective coat with a gloss of 94–98 % on metal, concrete and wood primed with Elakor primers, as well as over polymer and fire-retardant coatings. Lightfastness per ISO 9370-2017 is 7 (“excellent”), service temperature from −60 to +60 °C; the colour is tinted to RAL or matched to the customer’s sample.
| Manufacturer | Elakor — OOO “TEOKHIM-PROM”, Moscow Region |
|---|---|
| Type | polyurethane floors |
| Use | outdoor areas, chemically resistant |
| Base | thixotropic two-component polyacrylate-urethane enamel; acrylic-urethane prepolymers, organic solvents, pigments, functional additives |
| Colour | tinting to RAL, matching to the customer's sample is possible; gloss at 60° 94-98% |
| Packaging | “A” + “B” = kit 15 kg + 3 kg = 18 kg |
| Application method | Weather-resistant UV-resistant protective coats on any building materials (metal, concrete and other mineral substrates, wood) primed with Elakor polyurethane or epoxy primers, over Elakor PU/epoxy coatings and over fire-retardant coatings. After mixing, standing time 15-20 min. Main method – airless spraying (without thinner); additionally rollers, brushes, air spraying (5-10% xylene or butyl acetate). Relative air humidity not more than 80%; 3°C above the dew point; surface dry. |
| Application temperature | air and surface: optimum +15…+23°C; permissible +3…+30°C; material: optimum +15…+20°C, permissible +10…+25°C |
| Curing | pot life at +20°C at least 40 min (use within 40 min after standing); drying to degree 3 at +20°C, relative air humidity 65% not more than 1 h; forced drying up to +80°C (not more than 10 min); drying before service – 24 hours, full chemical load – after 14 days |
| Key properties | A:B ratio by weight 5:1; mix viscosity VZ-4 20-25 s; solids content by weight at least 54%, by volume at least 47%; density 1.02 ±0.01 kg/l; service temperature range from -60°C to +60°C; water absorption not more than 0.1%; film tensile strength at least 27 MPa; elongation at least 20%; impact (U-2M) direct 100 cm, reverse 50 cm; Shore D at 28 days 70-75; flexibility not more than 2 mm; gloss at 60° 94-98%; lightfastness 7 / “excellent” (ISO 9370-2017); Taber abrasion CS-10, 1000 g, 28 days – 24 mg; in a system with Elakor-ED Grunt-AKZ the predicted service life for UKhL-1 (GOST 9.401-2018) and for corrosivity categories C4, C5-1, C5-M is 25 years; chemical resistance: water, salt and alkali solutions of any concentration, acid solutions up to 10-20%, oils and fats of all kinds, organic solvents, petrol, diesel fuel |
| Layer thickness | at the recommended consumption of 110 g/m² the average wet film thickness is 106 µm, dry 50 µm; at 100 g/m² – wet 98 µm, dry 47 µm |
| Consumption | recommended theoretical consumption per coat 110 g/m²; maximum per 1 coat on a vertical surface at +20°C – 170 g/m² |
| Shelf life | 6 months in the manufacturer's original packaging; store and transport at temperatures from -30°C to +25°C |
Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.
Bonding polyurethane primer for repairs: applied over old epoxy and polyurethane floors and very dense concrete.
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