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WETISOL Spray 250H — hybrid polyurea for spraying
Wetisol (INGRI)

WETISOL Spray 250H — hybrid polyurea for spraying

WETISOL Spray 250H is based on hybrid polycarbamides and is applied by hot spraying, without solvents or volatile organic compounds. The compound forms a membrane on concrete, stone, metal and non-rigid substrates and is used on foundations, in tanks and pools, on roofs, in tunnels, on bridges and dams. The hybrid grade has lower strength and elongation — at least 13.0 MPa and 150–250% — and spraying is permitted only from +10 °C. Gel forms in 10–15 s, and service is possible from −50 to +70 °C.

Specifications

ManufacturerWetisol (INGRI) — OOO “Ingri”
Typepolyurea
Usefoundations and basements, tanks and pools, roofs, tunnels and metro, bridge structures, hydraulic structures and dams
Basetwo-component material based on hybrid polycarbamides for hot spray application; contains no volatile organic compounds or solvents
Colourthe unpigmented material is tinted with specialised pigment pastes at no more than 2% of the weight of comp. A; under UV exposure the colour gradually changes shade
Packagingkit A+B 40 kg and 440 kg
Application methodprotection and waterproofing of concrete, stone and metal structures, membrane on non-rigid substrates (bituminous roll materials, asphalt concrete, polyurethane foam); hot spraying with a two-component high-pressure reactor (e.g. ZOGEL ZS-7H240, ZS-12H240): feed hoses and components +70…+80 °C, preheating +30…+40 °C, pressure at least 150 bar (150–210 bar recommended), A:B = 1:1 by volume; homogenise the components before work (cans — mixer up to 500 rpm for 0.5–1.5 min, drums — drum tumbler or stirrer for 5–7 min); trial spraying on 1 m² with a cut-section check; concrete — abrasive treatment with vacuum dust removal, repair and priming with WETISOL S-CP (filler S-CP : quartz sand 1:1–2, then 1:3–4 by weight); metal — abrasive blast cleaning to degree 2 per GOST 9.402 / Sa 2½ per ISO 8501-1, Rz > 60 µm, salt and pH control, WETISOL S-MP1 or S-MP2 primer (application without primer is permitted after an adhesion test); tiles, stone — shot or sand blasting; non-rigid and bituminous substrates, asphalt concrete — WETISOL S-MP1 or SprayFoam-30/50; over WETISOL SprayFoam-30/50 rigid foam — without primer; spraying no later than 1–1.5 days after priming; substrate dense and even, without puddles or darkening from moisture, moisture max 5.0 wt. %; flushing of equipment with WETISOL Clean; to be applied by qualified specialists only
Application temperaturespraying of Spray-250H onto the prepared surface from +10 °C to +40 °C; primers: WETISOL S-CP +10…+30 °C, S-MP1 −10…+30 °C, S-MP2 −12…+50 °C; over SprayFoam-30/50 +10…+30 °C; substrate 3 °C above the dew point; relative air humidity max 80%
Curinggelation 10–15 s; light load after 30 min; full cure after 7 days; next coat — immediately after the previous one, but no later than 48 h (at +20±2 °C, 60±5%)
Key propertiesdynamic viscosity at +23 °C: comp. A 1,000–1,400 mPa·s, comp. B 600–1,300 mPa·s (GOST 25271); density of the cured composition 1.12±0.1 kg/dm³ (GOST 15139); Shore D hardness (7 days) at least 38 (GOST 24621); relative elongation at break 150–250% (GOST 11262); Taber abrasion resistance (CS10/1,000 g/1,000 rev) max 30 mg; tensile strength at break at least 13.0 MPa (GOST 11262); adhesion to concrete at least 2.5 MPa, failure in the concrete (GOST 28574); membrane watertightness (S=2 mm, 24 h) at least 2.0 kgf/cm² (GOST 2678); service temperature from −50 to +70 °C (short-term up to +80 °C)
Layer thicknessdesign membrane thickness 2.0 mm
Consumption2.2 kg/m² for a membrane with a design thickness of 2.0 mm (for reference); over SprayFoam rigid foam (20–25 mm, 1.0 kg/m²) — also 2.2 kg/m²; primers: S-CP 0.35 kg/m² (filler 0.50 kg/m² + sand 0.75 kg/m²), S-MP1 0.15 kg/m², S-MP2 0.40 kg/m²
Shelf life6 months from the date of manufacture in unopened original containers at +5…+25 °C; transport at −10…+35 °C for no more than 7 days
StandardsTU-5775-020-94613022-2014 with amendment No. 1

Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.

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