Moisture, overtime, will cause corrosion and decay of bricks, mortar and clay liners. How? Moisture reacts with the exhaust gases to form acids which "eat away" at your chimney. Also, moisture collects into cracks and can seep into bricks and mortar. In cold climates, the moisture freezes, expands, then thaws, causing chunnks of your chimney to break loose and crumble. Finally, moisture can actually drip back into your Appliance, causing it to rust or corrode.

Flex Liners reduce the size of the chimney opening, so they require less heat to effectively exhaust the fumes and prevent moisture build up.

Have Dunrite optimize your chimneys performance by installing a Selkirk chimney liner