Sika® Concrete Primer

Two-component solvent-based polyurea

12 months from date of production

The product must be stored properly in original, unopened and undamaged sealed packaging in dry conditions at temperatures between 0 °C and +25 °C.
Higher storage temperatures may reduce shelf life of product.
Reference shall also be made to the storage recommendations within the safety data sheet.

Component A : Component B = 3.64:1 (by volume)

+5 °C min. / +30 °C max.

Beware of condensation.
The substrate and uncured coating must be ≥3 °C above dew point.

+5 °C min. / +30 °C max.

≤4 % pbw moisture content

Test method: Sika^®-Tramex meter
No rising moisture according to ASTM (Polyethylene-sheet).

Sika® Concrete Primer is designed for fast curing. High temperatures combined with high air humidity will increase the curing process. Thus, mixed material in opened containers should be applied immediately. In opened containers, the material will form a film after 1 hour approx.

Note: Apply an additional coat if more than 24 hours pass before coating.

Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.

Apply in one to two coats, with a consumption of 0.35 kg/m² approx. per coat depending upon surface roughness and absorption.

The surface must be sound, of sufficient strength, clean, dry and free of dirt, oil, grease and other contamination. The concrete substrate must be sound and of sufficient compressive strength (minimum 25 N/mm²) with a minimum pull off strength of 1.5 N/mm².

All surfaces to be coated should be thoroughly cleaned by conventional means.
Inspect the substrate.
Spalling, flaking or damaged areas should be repaired using compatible materials to match surroundings or replaced as necessary.
If in doubt apply a test area first.
Tiles have to prepared mechanically, glazing has to be removed
Grinding may be necessary to level the surface.
For detailed information regarding substrate quality / preparation and primer chart please refer to informatoin relevant to the chosen system.

Prepare Sika® Concrete Primer by mixing component A until uniform. Add the component B into component A container and re-mix until homogeneous.
Sika® Concrete Primer can be applied by short-piled roller or brush.
Allow primer to dry sufficiently (see waiting time / overcoating) before overcoating.