We use the Ultimate Pipe Flashing® all the time, on every roof. It’s the only way to go, we use it all the time because it’s the right thing to do for the house. The number one the leak is on a boot or chimney. Why would you use anything less? Seriously, we order these things by the truckload because it is the best and our customers are happy and we’re happy, it’s worth the money. Don’t go anywhere else.