Trenchless Pipe Lining Clearwater. Perma-Liner will be providing trenchless pipe lining demonstrations in Clearwater during January 11th to January 13th. Trenchless pipe lining is a method of rehabilitating a pipe without digging and replacing the existing pipe. Trenchless pipe lining technology was started in Europe in the 1970’s but has been widely used here in the United States for the past decade. If you live or work in the Clearwater or Tampa Bay area and would like to see the trenchless pipe lining process in action, please call us to sign up!