Tough, Durable Base Coat for Wood & Metal Interior & Exterior Use

Available Sizes:

• 750ml
• 1.25L
• 2.5L

Johnstone’s Hardwearing Undercoat in Brilliant White is a professional-grade, oil-based base coat specially formulated for both interior and exterior wood and metal surfaces. It provides a smooth, durable foundation that enhances the adhesion and finish of Johnstones gloss and satin topcoats.

Ideal for preparing doors, frames, window sills, skirting boards, railings, and other surfaces, this undercoat ensures a consistent colour appearance, improved durability, and a superior final finish.

Product Features

• For Interior & Exterior Use Versatile formulation suitable for most wood and metal surfaces.
• Enhances Finish Designed to work seamlessly with Johnstones gloss and satin topcoats.
• Tough & Durable Forms a resilient base to extend the life of the finishing coat.
• Smooth Application Excellent coverage and easy to sand when dry.
• Oil-Based Formula Provides superior adhesion and opacity for top-quality results.
• Touch Dry in 34 Hours Recoatable in 1624 hours depending on conditions.

Specifications

Application Tips

• Surface Prep: Ensure surfaces are clean, dry, and free from dust, grease, and flaking paint.
• Tools Required: Use a high-quality brush or roller for even application.
• Stir Thoroughly: Mix well before use to ensure uniform colour and texture.
• Clean Up: Use white spirit or a suitable solvent for brush cleaning.

FAQs

Q: Can this undercoat be used under water-based topcoats?
A: Yes, it can be used under both oil- and water-based gloss or satin topcoats, but always check compatibility.

Q: Does this undercoat block stains?
A: It provides some stain resistance, but for heavy staining, a dedicated stain-blocking primer is recommended.

Q: Is it suitable for radiators or other high-heat surfaces?
A: It can be used on radiators, but for high heat resistance, a specialist radiator or heat-resistant paint is advised.

Prepare your surfaces the right way with Johnstones Hardwearing Undercoat ensuring long-lasting, professional results every time.