Another issue to consider with these designs is the flue draw factor. I hear from many clients how their backyard fireplace has a terrible draw and they see a lot of smoke coming out the front. This is because most of them have a very short flue of less than 8'. Like with a hotair ballon, you need more cubic feet of hot air to have a sufficient enough lift. Chimneys in a 2-story house have a lot better draw than with a single story house. The size of the flue X the length = square cubic lift potential. More the better. Think of how a single helium ballon can only lift a small plastic toy.

Just click on the photos below to see and read more about each project

It has been a gradual process over the years to refine this process of how I design and build these to last and hold up under the elements, while being simple enough to remove for cleaning the flue when required. I will supply the stainless steel screws for attachment.