Isoflex high performance liquid rubber is five times more flexible than bitumen and last up to 20 years. It is suitable for roofing due to its universally adherent filler which provides a durable repair and extra protection from the weather and UV damage. So its tough finish will not crack or peel, it flexes with the natural movement of the roof. Ensure the tin is thoroughly stirred, then use a brush and work in small sections. its essential to apply a thick layer of the isoflex liquid rubber. Re-coat within 24 hours.