BIRSS Polilak 2W matt — waterborne polyurethane sealer
Deep-matt solvent-free waterborne polyurethane sealer for finishing polyurethane and epoxy self-levelling floors and concrete.

This self-levelling mix of Portland cement and graded sand serves as a base for floor coverings or as a standalone finished floor. The manufacturer classes 34N among compounds for significant loads: 28-day compressive strength corresponds to class B20 (25.0 MPa), adhesion is at least 1.0 MPa, abrasion G1. The mix is poured in strips, indoors only, over BIRSS Grunt P primer; the floor can be walked on after 8 h.
| Manufacturer | BIRSS — AO “Opytny Zavod Sukhikh Smesey”, Moscow |
|---|---|
| Type | floor material |
| Use | production halls, retail and public, wet rooms |
| Base | cement self-levelling floor M250: Portland cement, graded sand, additives |
| Colour | grey |
| Packaging | paper bags 20 kg |
| Application method | poured in strips; 10 kg of mix to 2.0–2.2 l of water; the substrate is primed with BIRSS Grunt P (at least 2 coats), pouring 2–4 h after the primer has dried; indoors only |
| Application temperature | +5…+35 °C |
| Curing | foot traffic after 8 h; initial set not earlier than 60 min, final set not later than 100 min |
| Key properties | 28-day compressive strength B20/25.0 MPa; 28-day flexural tensile strength Btb4.0/5.0 MPa; adhesion at least 1.0 MPa; abrasion G1/0.34 g/cm²; wear volume A9/8.4 cm³/50 cm²; impact resistance 10 kg (≤2.0 mm) and 15 kg (≤3.5 mm); frost resistance F1 75; service temperature −50…+70 °C |
| Layer thickness | 3–40 mm (optimum application thickness) |
| Consumption | on average 16–17 kg of dry mix per 1 m² at a thickness of 10 mm |
| Shelf life | 12 months from the date of manufacture in undamaged packaging |
| Standards | substrate to SP 71.13330.2017, SP 29.13330.2010 |
Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.
Deep-matt solvent-free waterborne polyurethane sealer for finishing polyurethane and epoxy self-levelling floors and concrete.
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