Poured or pumped into an existing chimney, the Guardian mixture hardens to form an extremely durable barrier between hot flue gases and the masonry walls. The Guardian Chimney Liner® is designed to withstand extremely high temperatures without cracking or breaking down, and is an excellent insulator against excessive and dangerous heat transfer from the chimney to the surrounding structure. In fact, test results prove that the Guardian system is a better insulator than any other kind of flue liner of its kind. As the Guardian mixture is poured into place, all cracks, crevices, and openings are sealed and solidified. This tight, virtually perfect seal helps prevent the leakage of any toxic flue gases into the living area. The Guardian material also fills and reinforces brick joints in the chimney structure, locking them into place and strengthening the entire chimney. Additionally, this lining material is highly resistant to damage caused by the natural "freeze-thaw" cycle, which is responsible for much of the damage to highways, bridges, and similar structures. In fact, laboratory tests revealed no evidence of surface deterioration when subjected to these extremes. The Guardian Chimney Liner® is ideal for use with almost every form of heating appliance, whether it burns wood, coal, gas, or oil. The liner is poured to precise specifications so that the actual finished flue is properly sized for the individual heating appliance or fireplace. A Guardian liner makes your chimney safer, more efficient, and extremely resistant to corrosion and deterioration. You simply cannot buy anything better to safeguard your chimney.

The Guardian System also allows you to safely create two or more flues within one large chimney space, eliminating the need to vent two heating appliances into the same flue.