Thompson's Emergency Roof Repair Mastic - 750mL

Developed using technology employed on North Sea oil rigs, Thompson's Emergency Roof Repair Mastic is a trowel-applied mastic designed to adhere to nearly any roofing material, even underwater. With added fibers and a high solids content, this mastic is engineered for filling, plugging, and repairing cracks and splits, effectively targeting leaks at their source. Thompson's Emergency Roof Repair Mastic offers an all-weather solution, as its hydrophobic formula actively repels and displaces water during and after application, instantly forming a watertight seal. There's no need to wait for curing before it delivers full weatherproofing protection. It adheres to virtually any material, even underwater, making it suitable for use on flashings, gutters, roof lights, and valleys.