Overview

Rustins Quick Drying Primer & Undercoat is a versatile, high-opacity basecoat designed for both interior and exterior projects. Ideal for use on new or bare surfaces such as wood, MDF, plaster, brickwork, and cement, it delivers excellent adhesion and a smooth, even base for topcoats. Whether you're prepping fresh surfaces or refreshing previously painted ones, this dual-purpose formula can be used as a primer or undercoat. It’s compatible with both water-based and solvent-based finishing paints, making it a reliable choice for any decorating job.

Available in White and Grey, and easy to clean up with water, it’s a fast-drying essential for a professional-looking finish.

• Quick drying and water-based
• High-opacity coverage
• Can be overcoated with water or solvent-based paints

Preparation

Ensure all surfaces to be coated are clean, dry, and free from wax, grease, dust, and other contaminants.

• Seal all knots with Rustin’s Knotting before priming.
• Fill holes and cracks with Rustin’s Wood Filler after priming, then sand smooth.
• Previously painted surfaces clean thoroughly and lightly sand to provide a key for the undercoat before application.
• Remove all sanding dust prior to applying the primer or undercoat.

Proper surface preparation ensures excellent adhesion and a smooth, durable finish.

Application

• Apply liberally and evenly using a synthetic fibre brush or roller.
• If necessary, the primer coat may be thinned by mixing 5 parts primer to 1 part water.
• Do not thin when using as an undercoat.
• Apply a minimum of 2 coats for optimal coverage and durability.
• Touch dry within approximately 30 minutes, depending on temperature and humidity.
• Allow a minimum of 2 hours between coats, ensuring the previous layer is fully dry.
• Apply in smooth, even strokes for the best finish, and maintain consistent coverage across the entire surface.