The measurements of a chimney are a minimum of four inches bigger in all directions than the flue.
Building a chimney.
Build the smoke chamber.
Building a masonry chimney doesn t require a professional which can save you a lot of money but knowing how a chimney works and the importance of building it correctly can save you from experiencing a dangerous and potentially deadly house fire.
Before you start building a chimney check the local building codes for your area.
For a masonry chimney this usually means that you will be building your chimney right off the top of a fireplace if the chimney is designed to vent a fireplace using a brick that is similar to that used to build the hearth.
Calculate the flue dimensions and minimum height the sizes needed for your flue and the height of your chimney are relative to the open area of your fireplace.
You will need to start building your chimney from the ground up.
If you want to learn how to build a chimney there are several things you need to take into consideration before getting started.
Chimney chase fire blocking requirements.
Outside chimneys can be only one inch from the outer wall of the home.
Wood kindling and other materials that may travel up the chimney must be at a minimum of two inches away from the outer part of the chimney.