Isoflex

Ronseal Isoflex Liquid Rubber Black is a high-performance liquid rubber waterproofing product designed to protect and repair roofing surfaces. It forms a tough, flexible, weather-resistant coating that adheres to a wide range of materials like felt, tiles, concrete and metal, and its rubberised formula is up to five times more flexible than traditional bitumen coatings, helping to prevent cracking and peeling while offering long-lasting protection—up to around 20 years when applied correctly.