![]() These photos of masonry clay flue tiles exemplify what can happen during a chimney fire. A chimney technician gave us these tiles pulled from a chimney after a fire. We brought in a professional photographer to photo document the extent of the damage. As you can see in these photos, flue tiles cracked, and the cracks opened. The soot on the tile exterior burned and dripped. Hairline cracks can open up during a fire, expanding and opening the gateway for creosote, smoke, and flames to escape into the cavity between the tile exterior and the chimney interior. As you can see, moisture and creosote did travel through a crack in the clay flue tile and weak mortar joints and ended up on the tile's exterior. This breakage can also happen from a poor choice of mortar or during a chimney fire. The temperature difference between the interior and exterior walls caused Thermal Stress, leading to Thermal Shock and Stress Fracture(s) in the liner. This article is an excerpt from the Chimney Scanning & Inspection Guide, Phase 1, available on this website. ©2024 Estoban Corporation LLC.
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©2024 Estoban Corporation LLC.
![]() Cleaning chimneys has long been known to reduce the risk of chimney fires. Scanning a chimney flue with an internal chimney camera illuminates the defects in the flue's interior. Cleaning a flue and providing documentation of an internal chimney scan is essential in protecting your customer's family and home. Let's look at some statistics. According to Burn Wise, in 2011, heating equipment was involved in an estimated 53,600 U.S. home structure fires with associated losses of 400 civilian deaths, 14520 injuries, and $893 million in property damage, accounting for 14 percent of all reported home fires (NFPA). The leading factor contributing to home heating fires was failure to clean, principally creosote from solid-fueled heating equipment, primarily chimneys (NFPA). Confined fires confined to chimneys, flues, or flue burners accounted for 87 percent of residential building heating fires (U.S. Fire Administration). This information is available in the U.S. EPA Wood Smoke Awareness Kit. Another source of statistics from NFPA's Home Heating Fires, by Richard Campbell, December 2022 that pertains to 2016-2020 is online. This source features a lot of valuable information regarding statistics with Heating Equipment. A couple of valuable pointers in this documentation echo the points below. These are also Safety pointers.
This information is a reliable source to have. We recommend you download, save, and print these documents. Whether you pass along copies of the documents to news stations, use them in a radio talk show, or include them in a blog with links, this information is vital to our industry. Our commitment to the hearth and chimney industries is so strong that we created the Chim-Scan Factory-Trained Technician Program. We believe all of America’s chimneys should be inspected and video scanned correctly. ©2024 Estoban Corporation LLC.
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AuthorTom Urban has worked in the Chimney and Hearth industry for 45 years. He's been an inventor and manufacturer for 40+ of those years. Archives
March 2025
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