Transform your space with a stroke of colour and creativity with Johnstone's Trade Stormshield Brilliant White Undercoat Primer 2.5L. This high-performance primer and undercoat is specifically formulated to create a strong and long-lasting base for exterior wood and metal surfaces. Its unique microporous formula not only provides exceptional flexibility but also offers superior protection against the elements, ensuring that the surfaces remain well-protected for an extended period of time.