Basic Components of Your Chimney

Just as there are many types of chimneys, there are many types of chimney liners. And while the type of material the liners are made from may change, they all have the same purpose: To move combustible products such as smoke and gases, out of the home. If you are building a new home or having a chimney/fireplace added to your residence, you will need to consider the choices then make an informed decision. In addition, depending on what type of chimney you have- whether a factory built or masonry- the type of liner can vary, but only slightly. If you are not sure which type of chimney you have, here is a basic description of each:

• Masonry chimneys are typically built of brick stone or concrete blocks and can incorporate the traditional appearance that most associate with a chimney. These are usually more expensive than the factory-built chimney.
• Factory-built chimneys can be any of the following: Double-wall, mass insulated chimneys which have two layers of stainless steel with insulation between the layers; air cooled chimneys which are designed to allow for air circulation between the layers of metal; air insulated chimneys that like air cooled chimneys, allow for air flow but these work more as an insulator and combination's of any of these types. These usually have just one flue for venting combustible products. In addition, the inner wall of the chimney serves as the chimney flue.
• Regardless of the type of chimney you have, you can choose from an assortment of flues and flue liners. The flue is the vertical passageway that connects each fireplace or heat unit to the actual chimney. Typically, each fireplace and "appliance" will have its own flues. Currently, all building and safety codes require that all chimneys be lined. To help you determine what type of flue(s) will be best, consider these choices:
• Terra-cotta- These liners are made from baked clay, are usually 5/8 of an inch thick and look like 2-foot long square, rectangular of round tubes. These tubes are cemented together, end to end forming a long tube. They are also referred to as a tile or modular liner. Other products used to make the modular liners are volcanic pumice, cement or a combination of fireproof materials.
• Stainless steel- this is very popular for use in relining existing chimneys, but is also used in new construction. Stainless steel liners can have either a flexible or rigid metal tube that is encased in insulation. The metal allows for even constant heating and the insulation adds to level of warmth.
• Aluminum-If you have a gas fired furnace, this is a viable and economical option.
• Cast -in-place liners are a thick layer of cement-like material that is literally applied to the inside of the flue walls. A cast in place liner is installed by inserting a rubber tube into the existing chimney and then pumping the liner material in. Later on the tube is removed leaving a smooth finish.

For chimney maintenance and repair in New York and New Jersey contact Guardian Chimney. Article independently authored by Janet Slagell. The content herein may or may not reflect the views and opinions of Guardian Chimney. Click for search engine optimization and search engine marketing or visit WebDrafter.com's Blog.