Bostik Brush Waterpoofer 5L

The Bostik Brush Waterproofing 5L is a heavy-duty, solvent-based bituminous coating designed to provide reliable waterproof protection for roofs and external surfaces. Formulated with fibrous fillers, it creates a tough, flexible barrier that helps bridge small cracks and prevents water ingress. Once applied by brush, it dries to a durable black finish that delivers long-lasting weather resistance, even in challenging outdoor conditions. Ideal for maintenance and repair work, it is suitable for use on a wide range of roofing materials including felt, asphalt, metal, slates, and fibre cement.

• 5L solvent-based bituminous brush-applied waterproofing compound
• Forms a tough, flexible waterproof black coating
• Contains fibrous filler to help bridge small cracks
• Suitable for roofs, gutters, and external surfaces
• Compatible with felt, asphalt, metal, slates, and fibre cement
• Provides durable protection against rain and weather exposure
• Ideal for maintenance, repair, and resealing applications