Johnstone’s Trade Aqua Water Based Undercoat

About this product:

Johnstone’s Aqua Undercoat is a water based undercoat ideal for interior and exterior wood and metal. Specially formulated to give all the application and appearance characteristics of traditional undercoat with the added advantage of being quick drying and low odour during application. Johnstone’s Aqua Undercoat should be used in conjunction with Johnstone’s Aqua Gloss to give the best possible finish.

Technical Information

Touch Dry

1-2 hours


4-6 hours


10-12m² per litre



Key Benefits

  • Quick drying so ideal under water and solvent based trim finishes
  • Maintains gloss levels of Aqua Water Based Gloss topcoat
  • Low odour

Product Information

  • Sizes

    5lt, 2.5lt

  • Colours


Application Method

Stir well before use. Easy to apply by brush. Avoid overspreading. Do not apply in temperatures below 10°C or externally when rain is imminent. For best results use a good quality synthetic brush.