Zero Digging in Dunedin. Perma-Liner demonstrated their Perma-Main zero digging system in Dunedin a few weeks ago. The Perma-Main zero digging system allows the underground storm and sewer pipes to be rehabilitated with minimal traffic control and no road damage. This system performs 600+ feet of continuous lining and is steam cured for a faster cure time. If you live in Dunedin or the Tampa Bay area and are interested in seeing a live demonstration of the Perma-Main zero digging system, call us to schedule!