BIRSS Grunt P — acrylic primer for self-levelling floors
Solvent-free water-dispersion acrylic primer for concrete and screeds before cement self-levelling floors, including BIRSS 34N.

The enamel is applied over Singlfleks impregnation to produce a coloured, wear-resistant coating on concrete floors. The system is designed for the chemical and automotive industries, car parks, garages, warehouses, freezer and cold rooms. The coating withstands acids up to 12 % and alkalis up to 25 % and performs within −40…+90 °C; walking is allowed after 24 h, full cure after 48 h.
| Manufacturer | BIRSS — AO “Opytny Zavod Sukhikh Smesey”, Moscow |
|---|---|
| Type | polyurethane floors |
| Use | production halls, chemically resistant, car parks and ramps, warehouses and logistics, retail and public |
| Base | one-component pigmented solvent-borne polyurethane compound; non-volatiles at least 85 % |
| Colour | RAL colour |
| Packaging | metal pails of 50 kg |
| Application method | decorative finish coat in the Singlfleks system (over Singlfleks impregnation) |
| Application temperature | +5…+35 °C; substrate +5…+25 °C (3 °C above the dew point) |
| Curing | drying to degree 3 and further work — after 1.5–5 h (depends on air humidity); foot traffic after 24 h; full cure after 48 h |
| Key properties | Shore A hardness 95; bond to concrete 1.3–1.8 MPa; to metal 1.2–1.7 MPa; service temperature −40…+90 °C; chemical resistance: acids 12 %, alkalis 25 % |
| Consumption | 0.4–0.5 kg/m² (depends on substrate porosity) |
| Shelf life | not more than 6 months in closed original packaging; protect from sunlight, heat and freezing |
| Standards | TU 2253-019-05668056-04 with amendments No. 1, No. 2 |
Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.
Solvent-free water-dispersion acrylic primer for concrete and screeds before cement self-levelling floors, including BIRSS 34N.
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