Description: If you have a water leak you need to seal in your roof, window sill, gutter, toilet, drain pipes, air vents, around or under the house, caravan or RV exterior and interior, this professional performance waterproof repair tape is a necessity! To use this flashing tape, simply peel off the released film and apply. This user-friendly sealant tape stops a leak in just seconds, preventing extensive water damage. Our strong leak repair tape is made of 100% non-toxic butyl rubber, with an aluminium coating. Durable butyl tape is the number one choice for safety and ongoing use. .