Company Blog

What Is the Point of a Chimney Liner?

You have been searching tirelessly for the right historical house to make your new home, and you finally found the perfect one to buy. However, when you get the report from the Level 2 professional chimney inspection you need before you can make an offer on the home, you discover that the chimney is missing a liner. Since chimney liners were not mandated by most The Point of a Chimney Liner - Poughkeepsie NY - All Seasons Chimneylocal building codes before the 1940’s, it is not uncommon to see unlined chimneys in historic homes, and because of this, All Seasons Chimney is very familiar and experienced with bringing these chimneys up to modern safety codes and standards. For over 25 years, we have been providing professional chimney lining services to the residents of the Poughkeepsie area, and we can help you make the historical home of your dreams a reality by installing the best type of liner for the chimney. We are often asked why chimney liners are so important, and we would like to tell you more about the point of this essential chimney component.


The reason why most local cities and municipalities began mandating chimney liners in the 1940’s has to do with the results of tests given by the National Bureau of Standards (NBS) concerning the safety of masonry chimneys. According to the Chimney Safety Institute of America (CSIA), the NBS found that heat moved so quickly through an unlined chimney that it ignited the adjacent woodwork in less than three and a half hours. This is why the NBS stated that building a chimney without a liner was so unsafe that it was “little less than criminal.” All Seasons Chimney can protect your home from the risk of an accidental fire by installing a durable stainless steel liner inside your chimney to stop heat transfer from occurring.


Without a liner in place, the bricks and mortar joints of your chimney are at risk of damage by the corrosive and acidic byproducts of combustion. A chimney liner protects the masonry materials from being penetrated by flue gases, which can cause serious erosion damage. This type of masonry damage can deteriorate rapidly, and it can lead to dangerous hazards including heat transfers and carbon monoxide leaks. Our CSIA-certified chimney experts at All Seasons Chimney place your safety at the highest priority, and we can recommend the best liners to give your bricks and mortar joints the most ultimate protection against corrosive combustion gases.


A popular way to increase the energy efficiency of your home is to install a new gas insert inside your existing fireplace opening. To make sure your new fireplace insert works at its highest level of efficiency, it is important that the flue size matches the size of the insert. Typically, masonry chimneys are much larger than fireplace inserts, but All Seasons Chimney knows how to solve this problem by installing a custom sized stainless steel liner to give your insert a properly sized flue. We can also perform this service if you currently have a mismatched sized flue for your existing hearth appliance.

In order to function safely and efficiently, your chimney needs several important components, including the liner, in place. Contact us today at All Seasons Chimney to learn more about our professional chimney relining services.

Understanding CSIA Certification

To work as efficiently and as safely as possible, your chimney needs to be professionally swept and inspected at least once a year. These important maintenance services involve checking the interior and exterior of the chimney to make sure there is no damage present that could lead to potentially hazardous situations. When you hire a professional chimney sweep to take care of these tasks, you want to be certain that you are hiring someone you can trust to do the job properly. While chimney sweep recommendations from friends, family, and neighbors are always helpful, the best way to be sure that you are hiring the best person to work on your chimney is to ask if the sweep has received certification from the Chimney Safety Institute of America (CSIA). All Seasons Chimney is proud to have a staff of CSIA-certified chimney sweeps, and we would like to tell you why this professional credential is so important. Understanding CSIA Certification - Poughkeepsie NY - All Seasons

What is the CSIA?

Founded in 1983 as a non-profit educational organization, the CSIA works to teach chimney professionals, as well as homeowners, about the best safety practices for chimney and venting systems. A big part of this mission is their professional certification program for chimney sweeps. More than 1,800 chimney professionals in the United States and in Canada hold this certification.

How does a chimney sweep receive certification from the CSIA?

To become certified, a chimney sweep must pass two exams that are based on three publications: Successful Chimney Sweeping, The NFPA 211 (2016 edition), and the 2015 edition of the International Residential Code (IRC). Chimney sweeps also have a few options of study sessions to help prepare for these exams, including in-person and online review sessions. After completing the review, chimney sweeps have up to one year to take the certification exams. At the time of the exams, the chimney professionals must pay their fees and sign the CSIA Code of Ethics.

What is included in the CSIA Code of Ethics?

Although the knowledge and training that comes with the certification process are important, signing the CSIA Code of Ethics is a guarantee that the chimney sweep will treat you honestly and fairly when rendering his services. This means that when you hire a CSIA-certified chimney sweep, you will not have to worry about him engaging in unfair or deceptive practices on the job.  You can trust that he is giving you a fair and honest inspection report (including any estimates of necessary repairs) when the job is complete.

Understanding the importance of CSIA certification can help you when you need to hire a chimney sweep to perform the annual chimney maintenance services. If you live in the Hudson Valley area, the CSIA-certified chimney sweeps at All Seasons Chimney are at your service. Contact us to schedule an appointment for any professional chimney maintenance, repair, and installation needs you may have.