Wattyl Master Prep Pigmented Sealer is an oil-based sealer specially formulated for use on fully cured cement and plaster surfaces. It is suitable for both interior and exterior application to alkaline surfaces such as cement render, set plaster, fibrous plaster, fibrous cement sheeting and brickwork. May also be used as a sealer for interior timber surfaces such as plywood and hardboard (not MDF) where the best oil based gloss finish is required.
- Promotes adhesion on absorbent surfaces.
- Protects paint from alkali attack on set plaster.
- Use with water-based and oil-based finish coats.
- Interior and exterior application.
