Flexible Binding Undercoat for Damaged Surfaces – Zinsser Peel Stop is a clear, water-based sealer that penetrates and binds peeling, chalking, and cracking paint, extending the life of your surfaces. Ideal for Interior & Exterior Use – Perfect for previously painted wood, metal, masonry, and drywall surfaces, both indoors and outdoors, including doors, windows, siding, and foundations. Prevents Future Peeling – Special formula seeps into tiny cracks and gaps, ‘gluing’ them down to form a tight bond that stops further peeling, creating a solid foundation for primers and paint. Easy to Apply – Suitable for use on wood, brick, stucco, concrete, and more, Peel Stop acts as a flexible bridging primer to prevent cracking and ensure a smooth, lasting finish. Compatible with Any Topcoat – Once applied, topcoat with any latex or alkyd paint for a professional, durable finish that enhances the look and longevity of your surfaces.