The Ronseal Thompsons Emergency Roof Repair Mastic is a professional-grade trowel applied mastic designed for emergency roof repairs and waterproofing applications. Developed using technology from North Sea oil rigs, this high-performance sealant offers exceptional adhesion to virtually any roofing material, even when applied underwater. This emergency roof repair mastic features a hydrophobic formula that actively repels and displaces water during and after application, instantly forming a watertight seal without requiring curing time.
The mastic contains added fibres and a high solids content, making it ideal for filling, plugging and repairing cracks and splits whilst targeting leaks directly at their source. The all-weather formulation makes this roof repair mastic suitable for use on flashings, gutters, roof lights and valleys. Its ability to adhere to materials underwater provides tradespeople with a reliable solution for urgent repairs in challenging weather conditions.
Coverage is approximately 0.17m² per litre, allowing for effective leak repair on various roofing applications.