We've been camping in our pop up for 2 years now. This year for our vacation, rain was predicted every day. Had never bought anything like this before, however, with the prediction combined with an awesome prime day deal, I bought a 12 pack. Threw 4 rolls in my bag and off we went. Setting up, the canvas ripped on the corner, pretty bad, about 10 inches long. 1st time for that as well. Hubby only had duck tape and was frustrated we might have our 1st leak in a monsoon. I grabbed this tape and we fixed it right up, inside and out on the same spot. YES< very sticky, heavy duty and you have to handle with care. It's meant to stick, keep out leaks and it worked perfectly. NO LEAKS WITH THIS.... Thankful I bought this, could have caused damage in our travel trailer. Saved my vacation on the first day setting up for the week. Use doctor gloves to handle and store in a ziploc baggie. We didn't use gloves, just washed our hands after the emergency job we had to do.