I’ve been involved in the chimney industry since the late ‘70s when my wife and I started our chimney sweeping business. Anyone who was a sweep during this time enjoyed a business that boomed during the fall and winter, then fell off in the spring and summer. How times have changed. In these early days, there were no criteria for chimney inspections. Chimney sweeps swept the chimney, maybe noted some issues to the homeowner about the soot level,and left. Litigation and insurance companies started to change the industry and were the basis for developing the industry’s Standard of Care. 
Taking the NFPA 211 Annex and placing it into installation type.
One day, at the turn of the century, as I sat on my deck relaxing, my mind wandered back to the year 1998 when a bunch of guys and I drafted the Levels of Inspections, Degrees of Access, and the list of inspection items in Chapters 14 & 15 and in the NFPA 211 Annex. As I thought about how it would be incorporated into a chimney technician’s inspection, I realized it would be difficult for the technician to try to hit all the inspection items from memory. Additionally, some items would apply to one type of installation, but not all. Today, 25 years later, some chimney technicians are still missing inspection items from NFPA 211. It’s almost as if our industry Standard of Care slipped through our fingers. Is it because there are too many items for a technician to inspect? No, we've become lazy and pick and choose what we want. This led me to begin my 10,000 hours of creating what became the Flue and Hearth Notes™ inspection forms. 
Different Installation Types.
Forty years ago, before NFPA 211’s Inspection criteria, an inspection form was created with a fireplace and a handful of inspection items to check. It was in triplicate form, and chimney sweeps used it for all types of installations. It was used for all chimneys. However, a fireplace inspection differs dramatically from a chimney serving a gas water heater and an oil boiler venting into one flue. Unfortunately, some chimney sweeps and technicians still use these forms.  Twenty years ago, I envisioned building a comprehensive inspection form Based on NFPA 211 but for specific applications such as a Masonry Fireplace, a Prefabricated Fireplace, a Masonry Thimble Chimney Serving an Appliance(s), and a Prefabricated Chimney Serving an Appliance(s).  Although these installations all have chimneys, each chimney vents a different type of heating unit or fireplace. In addition, the fuels can differ: LP gas, natural gas, oil, coal, wood, and pellets.
No installations are the same, but you will see the same types of defects.
Every installation is unique, but the types of defects are the same across the board. For instance, defects can range from vertical and horizontal cracks, protruding mortar joints, stacked liners, and misaligned liners to missing chimney liners.
Start creating a Unity track: Defining what’s important.
One of my all-time favorite stories is one Tom Grandy shared about a trip to the dentist. As with any dental visit, almost everyone gets the lecture about how to floss twice a day, and we are given the same demonstration of how to floss each time we brush. One day, after a lecture on flossing, Tom shared what we all feel, and the dentists regularly hear. “I hate to floss!” I suppose that day, the dentist had heard it for the umpteenth time, and he was ready. He responded, “OK, just do the teeth you want to keep!” This has similarities to our industry. A technician can’t just pick and choose what they want to search for (the insurable cracked flue liner). All inspection items must be investigated (NFPA 211, Chapters 14, 15, and the Annex). I felt pulling all this together would create unity on chimney inspections in our industry since it didn’t seem to be happening.
The start of the Flue and Hearth Notes™ (10,000 hours) of form building and why and how they are built.
I began with the vision of a unified form. I grouped inspection items with installation types. I further included an area for defects related to specific areas, such as a chimney liner. I grouped inspection items per area where they were found in the chimney or fireplace. I included information on appliances. I had professionally created drawings and pulled everything into multiple inspection report forms. Recently, I added more forms to the offering and broke them down by fuels. We now have eight form types: Masonry Fireplace, Masonry Fireplace with a Hearth Stove, Masonry Fireplace with an Insert, Masonry Thimble Chimney Serving a Solid Fuel Appliance, Masonry Thimble Chimney Serving a Liquid Fuel Appliance(s), Prefabricated Chimney Serving a Solid Fuel Appliance, Prefabricated Chimney Serving a Liquid Fuel(s) Appliance, and Prefabricated Fireplace and Chimney. We have Level I and Level II forms for each installation type. That’s 16 forms in total. But then, we went a step further.

Terra cotta flue tiles have been used for almost a century as an accepted liner for masonry chimneys. A brand-new flue may look like the photo shown on the right. The tile is new; it should not be broken (or, in this case, have a cutout view). 
 As the chimney is being built, flue tiles stack on each other and are mortared together with a joint. In the past, masons often used mortar such as type "S" or type "N" mortar, the same mortar they used to lay the brickwork. These mortars can erode, leading to open mortar joints and shifting flue tiles. Today, codes require a non-water-soluble refractory cement that withstands the onslaught of moisture. This creates longevity for your masonry flue. 
Equally important is a smooth interior mortar joint (specified by codes). The picture on the right is an example of a brand-new ideal joint. Mortar that protrudes into the flue can hinder flue gases and smoke. This may affect the way the fireplace burns. A smooth joint is an optimal joint.
Many other types of damage can happen to a masonry flue. To ensure your flue is in an operational-ready condition, ask the chimney sweep to continuously scan your chimney with a Chim-Scan® Internal Video Inspection System each year your chimney is cleaned.  Catching defects early and making repairs can preserve your investment in your fireplace, chimney, and home. 
#chimney inspection, #chimney camera, #chimney flue, #scanning chimney

​Prefabricated chimneys have been in use for decades as a Listed, accepted substitute for masonry chimneys. Prefabricated chimneys and venting product installations can vary based on the product, the installation type, and the appliance type. It’s important that these chimneys be inspected annually and cleaned. Inspecting the chimney with a Chim-Scan® Internal Evaluation System is a great way to ensure the chimney is in a continued operational condition.

All manufacturers of prefabricated chimneys test their products at a recognized laboratory to a test standard.is the creator of the test standards. Tests include several challenging factors the chimney must pass, including temperature, duration, torsion, chimney brushing, and rain tests, to name a few. 

Once the manufacturer successfully passes the test, the product installation instructions must be approved, each component properly labeled, and an agreement must be signed for random manufacturing plant inspections. Then the manufacturer is offered the Listing. 
The manufacturer may choose to offer a training program for installers. The installer's job is to install the chimney or vent, using the listed components to recreate it in the same manner as the manufacturer's installation during the testing for listing or approval. 

A new chimney pipe is shiny inside and should not have any denting or damage inside or outside. The joints should connect firmly, and all supporting components must be used. After a new chimney pipe is put into use, it must be inspected at least annually and cleaned as specified in the maintenance section. Again, the best way to see inside a series of chimney sections is with a Chim-Scan® Internal Video Inspection System.
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With proper installation, usage, and maintenance, your prefabricated chimney system should give you years of use. After all, they have been used to vent fireplaces and hearth appliances for decades. 

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