Get to Know Chimney Liners

Have you ever taken a moment to get to know chimney liners? Here at Chimney Sweeps of America in Denver, we recommend that you do if you think you might need to replace it soon. Chimney liners are a big piece of your keeping your chimney safe and protecting your home against fires.

What is a Chimney Liner?

A chimney liner is basically a metal cover for the inside of your chimney. Its purpose is to keep water from getting into the masonry and damaging it. A liner also helps to channel heat and other byproducts of a fireplace fire up and out of the chimney. It is essential to have the correct-sized chimney liner. If you get to know chimney liners, you’ll see that going too small can create problems with the draft.

Chimney Liner Materials

Some chimneys (especially older ones) are equipped with clay tile liners that fail eventually. The heat can cause them to crack, and they stop being effective. They are inexpensive, though, which is why they have been so commonly used.

These days, most chimney liners are stainless steel. Different alloys are typically used depending on the type of fuel burned. Some have stronger resistance to corrosion and are necessary for high-efficiency gas stoves. There is also a range of metal thickness used in the liners. There are three basic categories–Light, High-Performance Light, and Heavy. Light, of course, is the thinnest and cheapest with heavy at the opposite end of both spectrums.

Liner Insulation

When installing a chimney liner for any solid fuel appliance, it is necessary to use an insulated one. For oil and gas stoves, it is not a requirement, but it can be a good idea, particularly in chimneys that are on an exterior wall of your home. Insulation, however, does add cost so consider the benefits in your situation carefully. Don’t be afraid to ask one of our friendly professionals for advice. After all, we are the ones who generally know best!

UL Listings and Standards

The Underwriters Laboratory recognizes and certifies chimney liners (and many other products). But pay close attention to determine whether a chimney liner has received a genuine UL listing.

Some chimney liners do not receive the listing, but they are tested by another organization to the UL’s standards. If you want a liner that has a genuine UL listing (which is best) be sure to read the fine print. The packaging makes it sound like the liner is UL listed, but in reality, it is not. It is generally still a safe, effective product because someone tested it to UL standards. But if you want the real deal, be aware.

If you think that you need a new chimney liner, it’s good to get to know chimney liners. However, nothing can replace the advice of a seasoned expert. So, feel free to call us here at Chimney Sweeps of America to help decide if you need a new liner. If you do, we’ll help you pick out the right one for your specific situation. With our more than 35 years of experience, we have the expertise you can rely on.

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