Chimney Liners are important for many reasons. Most importantly, they protect the house from heat transfer to combustibles. Whether you need a liner for a stove or chimney, Lindemann Chimney sells aluminum and stainless steel liners and both come with warranty’s. Smart-flex liner is one of our most durable liners. It can be used to reline existing chimneys or in new construction. It’s a flexible liner featuring corrugated construction allowing it to both expand and contract during heat up and cool down periods. Liner kits are also available and come complete with instructions.