- Apply the product neat with the aid of a sprayer or a paintbrush. The reaction is quick and is characterised by a light effervescence that does not change the material.
- Leave to act for 10 to 15 minutes.
- Brush then rinse with water.
- A second application could be necessary faced with thick traces of cement and / or lingering effereversence
- Always finish with rinsing.
- Clean the tools with water after use.