• Excellent coverage helps conceal surface imperfections for a smoother, more uniform finish
• Low VOC water-based formulation with virtually no odour supports reduced environmental impact
• Quick-drying properties enable faster recoating and efficient project turnaround times
• Superior sanding performance allows easy preparation of an even surface ready for topcoats

Wattyl Prep Acrylic Sealer Undercoat White 4L is a high-performance water-based undercoat designed to prepare interior surfaces for a smooth, consistent topcoat finish. It delivers excellent coverage to help conceal surface imperfections and create an even base for painting. Its low VOC formulation supports reduced environmental impact and produces virtually no odour, making it suitable for occupied spaces and interior projects. The quick-drying formula allows faster recoating times, while its sanding properties help achieve a fine, even surface ready for finishing coats. Engineered for reliability across a range of interior substrates, it forms a sound foundation that improves paint adhesion and final appearance. Ideal for use prior to topcoats, it helps ensure a more uniform finish across walls and ceilings while maintaining ease of application for trade and DIY users alike. Suitable for professional painters and renovation projects where consistent base preparation is required, consistently across interior surfaces.