RoofJoint 429 is a high-quality, self-adhesive, multi-purpose waterproofing membrane. Made from polymer-modified bitumen rubber and surfaced with tear-resistant HDPE plastic, it's easy to use and ideal for preventing leaks. It works exceptionally well on roof ridge caps, tiles, and exterior wall-to-floor joints. This product offers excellent waterproofing, flexibility, and resistance to minor cracks and sunlight. It can also be painted over with a roof paint.