Wetisol S-MP3 — primer for polyurea on PVC and metal
Polyurethane primer for polyurea and polyurethane coatings on metal, PVC roofs, bitumen and concrete; intermediate coat for LAM 361 mastic.

The WETISOL Spray 400UV top layer protects from ultraviolet and colours Wetisol Spray-250H/300/400 polycarbamide coatings, Wetisol LAM 361 mastic and polyurethane foam. It is a two-component thixotropic compound based on aliphatic polyurethane for manual and mechanised application; it is used on roofs, tanks, water bodies, in tunnels, on bridge supports, decks and facades. The coating, with a gloss of no more than 20%, is resistant to industrial and sea water and weathering, and can be walked on after 3 h. Fire hazard class — KM1.
| Manufacturer | Wetisol (INGRI) — OOO “Ingri” |
|---|---|
| Type | waterproofing material |
| Base | two-component paint compound based on aliphatic polyurethane, resistant to UV radiation, for manual and mechanised application; thixotropic |
| Colour | coloured composition; coating gloss max 20% |
| Packaging | kit A+B 1 kg, 5 kg and 10 kg |
| Application method | UV-resistant protective and decorative topcoat over Wetisol Spray-250H/300/400 polycarbamide coatings, Wetisol LAM 361 mastic and WETISOL SprayFoam-50 polyurethane foam (roofs, tanks, water bodies, tunnels, bridge supports, decks, metro floors, facades, art objects); as a standalone coating — limited functionality, for surfaces with atmospheric and short-term mechanical and chemical loads; over fresh polycarbamide or PU foam without primer after cooling to +20…+30 °C; if the polyurea was applied more than 8 h ago — grinding, dust removal, degreasing (acetone); concrete — WETISOL S-CP primer; metal — S-MP3 or S-MP2; mix comp. A (up to 500 rpm) for 0.5–1.5 min, add B, mix for 2–3 min, transfer and mix for another 1–2 min (no more than 5 min in total); A:B = 7.77:1 by weight; prepare only the volume that can be used within the pot life; by roller, brush or airless spraying (ZOGEL ZP-1E300 — for uniform gloss without streaks) in 2 coats of 80–120 g/m²; good ventilation |
| Application temperature | substrate and air +10…+30 °C; relative humidity max 80%; 3 °C above the dew point |
| Curing | pot life (gelation) about 15 min; foot traffic after 3 h; full cure after 3 days; maximum interval before application onto Wetisol Spray: 8 h at +5 °C, 6 h at +10 °C, 4 h at +20 °C, 3 h at +30 °C; between coats of 400UV — no more than 12 / 8 / 6 / 4 h at +5 / +10 / +20 / +30 °C |
| Key properties | density: comp. A 1.17–1.40 g/cm³, comp. B 1.01±0.05 g/cm³, mix 1.15–1.35 g/cm³ (GOST 31992.1); mass fraction of non-volatile substances at least 64.0% (GOST 31939); gloss max 20% (GOST 31975); cross-cut adhesion max 1.0 point (GOST 15140); Taber abrasion resistance max 80 mg; confirmed UV resistance — high (in-house method); resistance to industrial and sea water and weathering; service temperature from −60 to +60 °C (short-term up to +90 °C) |
| Consumption | 80–120 g/m² per coat; 0.25 kg/m² for 2 coats |
| Shelf life | 6 months from the date of manufacture in unopened original containers at +5…+25 °C |
| Standards | TU 2312-045-94613022-2015; fire safety KM1 (V1, T1, D1, RP1) — certificate RU C-RU.PB68.V.00136/19; G1 — certificate RU.OS 002/3.N.01277 |
Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.
Polyurethane primer for polyurea and polyurethane coatings on metal, PVC roofs, bitumen and concrete; intermediate coat for LAM 361 mastic.
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