Johnstone's Joncryl Water Based Primer Undercoat is an acrylic based primer and undercoat with a low odour. With quick drying times it is usually applied to prime bare wood and can also be used on top of an existing coat. Transform your space with a stroke of colour and creativity with Johnstone's Trade White Joncryl Undercoat Primer 2.5L. This primer and undercoat is a highly versatile, water-based product that is specifically formulated for use on interior wood, hardboard, cement, plaster, and brick surfaces. Its high-opacity formula ensures excellent coverage and obliteration of imperfections, while its water-based composition results in low VOCs, low odour and quick drying times. As a superior alternative to traditional solvent-based primers, it offers exceptional coverage and easy application, making it an ideal choice for a wide range of interior surfaces. An acrylic based primer and undercoat in one, offering good obliteration and covering power.