Watch: How to make a live leak repair with Wrap & Seal Pipe Burst Tape
Wrap & Seal Pipe Burst Tape is a self-amalgamating silicone repair tape which stretches by 300 percent. When wrapped tightly around a pipe, it fuses to form a solid rubber band over a leak, creating a high-pressure seal.
Before application, the repair area is cleaned of any loose material. If the pipe surface is corroded, pitted or too uneven to a make a good seal with the Tape, then it is advisable to use Superfast Epoxy Putty to improve the surface or fill in steps between joints.
The release film is peeled back from the start of the Wrap & Seal and the Tape anchored to the side of the leak. One full wrap around the pipe ensures that the Tape grips to itself.
It is then wrapped towards the leak whilst being stretched as tightly as possible to three times its length. The release film is removed during application and the Tape overlapped by 50 percent each time.
Once the point above the leak has been reached, Wrap & Seal is applied directly over the top with as much stretch as possible to apply full pressure. The leak should not chased, or the Tape wrapped too far from the leak location.
When repairing a longitudinal split, the Tape is applied with 50 percent overlap across the entire length of the split. The application continues backwards and forwards across the split to apply even pressure.
Wrapping of the Tape only ceases once the leak has stopped and the Wrap & Seal in use has been completely used. If the leak is not sealed by the end of the Tape, the user waits 30 minutes to see if the Wrap & Seal beds into the pipe.
If the leak continues after this time, then a second Tape is applied over the first. Additional Wrap & Seal will fuse to what is already present on the pipe, increasing the pressure resistance of the repair. Multiple Tapes are used until the leak has been fully arrested.
The above video was filmed during testing at Sylmasta HQ in the United Kingdom. A 3mm pinhole was drilled into a 100mm stainless steel pipe, before a Sylmasta technician sealed the leak whilst the line remained pressurised.
Calculating the number of Wrap & Seal Tapes needed for a repair
The Wrap & Seal Calculator determines the number of Tapes needed for a live leak repair up to a specified pressure resistance. Enter water pressure, pipe diameter in mm and length of crack. For a pinhole leak, leave repair length blank.
After entering the repair data, selecting the size of Wrap & Seal to be used in the application will determine how many of that specific Tape are required.
Calculations serve as a guide to potential maximum pressure resistance only. Actual pressure resistance depends upon pipe material, condition, hole size, leak type and tension maintained during wrapping.
Reinforcing repairs made using Wrap & Seal
Repairs made with Wrap & Seal should be reinforced by applying a SylWrap Pipe Repair Bandage over the Pipe Burst Tape. The Bandage offers a rock hard, impact resistant layer of protection which turns the repair permanent.
Both Wrap & Seal and SylWrap Bandages are available along with Superfast Epoxy Putty in the Universal Pipe Repair Kit which contains all the equipment needed for fixing live leaks in an emergency. For a kit that allows for multiple pipe repairs to be carried out, then please see the Contractor Case.
Wrap & Seal, Superfast Epoxy and SylWrap HD all have WRAS approval, meaning they have been certified to British Standards as safe to use on pipes and fittings carrying drinking water.
Wrap & Seal Pipe Burst Tape
Self-amalgamating silicone repair tape which fuses to form a solid rubber band sealing live leaks
If you have an application you would like to enquire about, then please get in touch
Call: +44 (0)1444 831 459