Anti Hot Spot Repair Tape is fixed over existing Anti Hot Spot Tape if the top layer rubs off due to friction (e.g. as a result of sustained wind damage or the polythene becoming baggy, which can cause the polythene film to rub against the Anti Hot Spot Tape).It is also used over existing Anti Hot Spot Tape when replacing the polythene cover
Anti Hot Spot Repair tape puts an isolation barrier between the old foam Anti Hot Spot tape and your new polythene sheet.
This has two advantages. If you have very old PVC foam Anti Hot Spot Tape, it isolates the polythene from harmful chloride foam so that you get the guaranteed life out of your new cover. The second benefit is that it makes the slipping of a new cover onto the tunnel very much easier.
Anti Hot Spot Repair tape is 50mm wide and makes it easy therefore to cover over your old Anti Hot Spot Tape, the extra width sticking to the steel of the structure. The rolls are 50 M long and so will cover approximately 7 hoops on most tunnels.