Ronseal 36082 Thompsons Emergency Roof Repair Mastic 750ml RSLTERRM750

Developed from technology used on North Sea oil rigs.
A trowel applied mastic with the ability to adhere to virtually any roofing material even underwater.
With added fibres and a high solids content, has been developed for filling, plugging and repairing cracks and splits, targeting leaks at the source of the problem.
An all weather solution, its hydrophobic formula actively repels and displaces water during and after application instantly forming a watertight seal that does not require time to cure before it delivers full weatherproofing protection.
Will adhere to virtually any material even under water. Suitable for use on flashings, gutters, roof lights and valleys.