2 Clay Chimney Liner Safety Tips 2 Clay Chimney Liner Safety Tips

When replacing a clay chimney liner, there are three important safety tips to remember. The liner of a chimney is a critical part in ensuring the safety of a home. The liner is the inside wall of the chimney above the fireplace. While there are also aluminum liners available, clay liners tend to be more popular. Clay liners extend the life of the chimney by protecting it. By relining a chimney, it is less expensive than rebuilding an entire chimney and requires no demolition to the wall or brick.

Chimney liners are made to contain the carbon monoxide, smoke and burning embers which the fire creates. Liners protect the home from exposure to carbon monoxide poisoning or a chimney fire. Carbon monoxide is an odor-less, invisible gas which can be fatal to both people and animals with continuous exposure. Clay liners are resistant to acid, corrosion and electricity. Acid will eat away at the liner if it is not an acid-resistant model, causing cracks, which in turn creates creosote build-up. With its resistance to electricity, if lightning strikes the chimney, there is no damage to the home.

In following these tips, the fire created will be safe, both while it is burning and when it is out.

Correct Sizing

Sizing is extremely important because with an incorrectly sized liner, two things will occur. If the liner is too big, a down draft enters the home. A down draft is a downward current of air. If the liner is too small, carbon monoxide enters the home. In order to ensure the correct fit, measurements must be taken. Make sure to measure the inside diameter of the chimney liner opening. For chimneys used with fireplaces, measuring starts from the top of the chimney, down to the top of the smoke chamber. It is also important to measure the opening of the fireplace for both width and height. If it is a wood stove, measuring begins at the top of the chimney down to where the stove will be connected. Find the exhaust of the wood stove and measure the inside dimensions. The correct size liner can now be purchased. The liner can be made of many different materials, including clay tiles. When installing clay tiles, none should be missing and there should be no cracks. Take the time to inspect carefully before installing. If the tiles contain cracks, then creosote will build up.

Smooth Interior Surface

A smooth surface resists creosote build-up. This is common with wood burning fireplaces or stoves. Creosote is an ill-smelling, corrosive, highly combustible material which coats the inside of the chimney. It can be in liquid form and travel down the inside of a chimney. It can become a hard layer, forming a coating inside the chimney liner. Creosote is the cause of chimney fires.

The chimney liner is important both to the chimney and the homeowner. By installing correctly, both are kept safe. Fireplaces and wood stoves are to be used for warmth and enjoyed, not a danger to a family or home.

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