- Eliminate with a brush all crumbly and non-adhesive parts.
- Apply the product neat with the aid of a paintbrush, a roller, or a sprayer until the base is saturated, largely spreading over the areas to be treated.
- When the base is dry, normally at the end of 2 to 3 hours, apply a second layer.
- Clean the tools with water after use.
Especially recommended before painting, coating, applying wallpaper to old walls or those covered in saltpetre