Exterior Primer Undercoat



Coverage (per litre)

12 m²

Dry Time

1-2 Hours

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Professional Painter

Product Details

Johnstone’s 6 Year Exterior Primer Undercoat is suitable for use on exterior wood and metal surfaces. Low odour and quick drying, it has been specially developed to be used in conjunction with Johnstone’s 6 Year Exterior Satin to provide a flexible and long lasting finish that resists cracking and peeling.


  • Weather protection
  • Crack and peel resistance
  • 6 Year Life
All surfaces should be clean, dry and free from grease. Remove any loose or flaking paint. Rub down bare timber and sound glossy surfaces with fine waterproof abrasive paper to provide a key and rinse thoroughly. Apply a suitable knotting solution to knots and resinous surfaces. Prime metal surfaces with an appropriate primer. Avoid the inhalation of dust. Wear a suitable face mask if dry sanding.
Stir well before use and apply by brush or roller. Apply a liberal coat of Johnstone’s Exterior Primer Undercoat followed by two coats of Johnstone’s Exterior Satin. The surface will be touch dry in 30 mins, allow 1 to 2 hours drying between coats under normal conditions. For maximum performance Johnstone’s Exterior Primer Undercoat and Satin should be applied as a system. Do not apply when the air or surface temperature is below 10ºC or in damp conditions.
Remove as much product as possible from application equipment before cleaning. Clean all equipment immediately after use in warm soapy water and rinse thoroughly.