Johnstone’s Trade Professional Undercoat is a premium solvent-based undercoat designed to deliver excellent coverage and film build on both interior and exterior wood and metal surfaces. With its superior adhesion and smooth application, it prepares surfaces flawlessly for gloss, satin, or eggshell topcoats—making it a favoured choice among professionals seeking lasting quality.

Key Features:

• Solvent-based, high-opacity primer for excellent coverage

• Strong adhesion and generous film build for masking imperfections

• Ideal undercoat for gloss, eggshell, or satin finishes

• Suitable for both indoor and outdoor wood and metal

• Brush or roller application for versatile use

Ideal For:

• Priming doors, skirting boards, architraves, and window frames

• Readying surfaces for high-shine or mid-sheen decorative finishes

• Renovation of tired or damaged wood and metalwork

• Projects requiring a durable, flawless foundation

Application:

• Stir thoroughly before use

• Apply to clean, dry, sound surfaces with a quality brush or roller

• Touch dry in 4–8 hours

• Recoat after 12–24 hours based on drying conditions

• Excellent for sanding and concealing imperfections before topcoat

Coverage:

• Approximately 16–18 m² per litre depending on substrate

Available Sizes:

• 500 ml

• 1 L

• 2.5 L

• 5l