Pipe boots, also known as pipe sleeves, surround the base of a pipe creating a seal with the liner. These sleeves prevent leakage at a very vulnerable spot in the liner. While installation is important for getting a proper seal, you also want to have a pipe boot that is made for the tough rigors of withstanding leaks. If you have pipes coming through any liners or containment systems you have, you must include sturdy pipe boots in your construction. Without them, you'll likely end up with a breach in the system.