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Johnstone’s Trade Professional Undercoat Brilliant White 1L is a premium quality basecoat designed to provide a solid, even foundation for gloss and satin topcoats. Developed for professional decorators, it enhances adhesion, improves colour uniformity and supports a smooth, durable final finish on interior and exterior surfaces.
The 1 litre size is ideal for smaller decorating projects, detailed trim work and maintenance tasks.
Professional trade undercoat
Colour: Brilliant White
Size: 1 Litre
Suitable for interior and exterior use
Excellent opacity and covering power
Promotes smooth topcoat application
Strong adhesion to properly prepared surfaces
Compatible with Johnstone’s Trade gloss and satin finishes
Applying a dedicated undercoat helps create a uniform surface before finishing coats are applied. This improves the final appearance of gloss or satin paints by enhancing colour consistency and helping to reduce patchiness.
Its strong opacity makes it particularly effective when painting over darker shades or preparing previously coated surfaces.
Recommended for use on:
Interior and exterior timber
Doors and frames
Skirting boards and architraves
Window frames
Primed metal surfaces
For bare wood or metal, use an appropriate primer before applying undercoat.
Ensure surfaces are clean, dry and properly prepared before use. Stir thoroughly and apply evenly with a quality brush or roller. Allow adequate drying time before applying the selected finishing coat.
For decorators seeking a dependable basecoat in a compact size, this professional undercoat delivers strong coverage, smooth flow and reliable performance. It provides the essential preparation step for achieving a durable, high-quality decorative finish.
