Although many people don’t realize it, chimney liners are one of the most important elements of any chimney system. Whether your chimney burns oil, gas or solid fuel, the liner assists in guiding the by-products caused by the combustion up the chimney and away from your home. Chimney liners are crucial in not only protecting the inside of your chimney but also ensuring that your chimney operates as efficiently and effectively as possible.
While other elements of your chimney system are easier to monitor, a professional chimney inspection is essential in detecting any issues with your liner. Many homeowners overlook this part of their chimney system, simply because they can’t see it. Your chimney liner covers the inside of your chimney system, providing protection for your chimney. If your liner becomes damaged or worn, you might need to have it replaced or repaired to prevent further damage to your home, interior painting or risk of harmful chemicals entering your home.
Let’s take a closer look at chimney liners so that you can stay informed about this vital element of your chimney system.
The Function of Chimney Liners
Chimney liners provide three main functions and play a vital role in your chimney system.
Protecting the Chimney System
Chimney liners protect the brickwork and concrete that your chimney is made from. Corrosive byproducts created by the fire can cause serious damage to the masonry work if there is no liner in place. In addition, creosote and soot can harm your chimney from inside your chimney.
To ensure that your chimney is providing optimal ventilation, it’s important to have a chimney liner in place. Essentially, chimney liners create the right sized vent for your fireplace ensuring the right amount of space is available and a smooth passage is present for smoke to escape and for your chimney to operate efficiently.
Providing a Barrier
Your chimney liner serves the function of acting as a barrier in two main ways. First of all, it eliminates the risk of harmful chemicals entering your home through the brickwork of your chimney, which can be harmful to those inside. Secondly, it prevents heat being transferred to other building materials used in your home such as those supporting your roofing.
Different Types of Liners
There are three main types of chimney liners in use today. While each one provides the same basic function, different types of chimney liners are used in different situations depending on a number of factors.
Clay Tile Chimney Liners
Clay tiles can withstand very high temperatures and hold up very well to damage from corrosive materials, making them a great material for chimney liners. This method has been used since the 1900’s and while the clay tiles themselves are not very expensive, the work involved in installing them is very comprehensive, making this the most expensive option. Most of the time these are installed during the homebuilding process and replacing and maintaining this system is costly and time-consuming. Installing this type of chimney liner after your home is built can require heavy remodeling work.
Cast-In-Place Chimney Liners
If your chimney flue is in disrepair, a cast-in-place liner can be a great option. These liners work to reinforce the structure of your existing chimney as they are very durable and are not easily affected by harmful gases or heat. They also stand the test of time, often lasting up to 50 years. However, installation of these liners is a big job and should only be attempted by a professional.
Metal Flue Chimney Liners
Metal flue liners are the most popular option with homeowners nowadays due to their versatility and flexibility. Usually, metal liners are made of either alloy or stainless steel and they come in either rigid or flexible constructions. Your chimney professional will choose rigid or flexible construct depending on the shape of your chimney. Flexible liners have the added benefit that they can expand and contract with exposure to heat, helping to knock off deposits of creosote and other buildups.
Take Some Time to Understand Chimney Liners and Make the Right Choice
There’s more to chimney liners than most homeowners may think and with them playing such a pivotal role in the functionality and protection of your chimney system it’s important you make the right decision. Take some time to speak with a professional and make sure you make the right call for your home’s chimney system.