Promac Rubber Duck Seal Flex is a high-build, fibre-reinforced acrylic waterproofing coating designed to provide long-lasting protection against water penetration and environmental damage. It is applied as a thick paste that cures into a seamless, flexible membrane, protecting surfaces from leaks and structural wear.
 
Unlike standard coatings, Seal Flex contains reinforcing fibres that strengthen the coating, allowing it to bridge cracks up to 2mm while maintaining flexibility.
 
This product is ideal for roof waterproofing, parapet walls, flashings, joints, and intricate areas, where flexibility and strength are essential. It moulds easily to complex surfaces and provides excellent resistance to UV, weather, and temperature changes.
 
Seal Flex forms a watertight system that extends the lifespan of roofs and structures while maintaining a durable, decorative finish.