- **Surface Preparation**: Ensure the plaster surface is fully cured, dry, clean, and free from grease, dust, or loose particles. - **Thinning**: For brush application, thin (1:1) with clean water depending on surface absorbency. - **Coating**: Apply evenly with brush or roller. For best performance, apply **two coats** of NU Prime Seal. - **Old Surfaces**: Remove all defective or flaking paint using sandpaper or a stiff brush. After priming, apply Berger Wall Putty if additional surface smoothness is required. - **Restrictions**: Designed for **interior use only**. Not recommended for damp walls or exterior surfaces.