Designing My Salt Kiln: Early Decisions and Direction
A salt kiln does not start with bricks. It starts with questions about size, fuel, flame and where the thing will actually stand.
Before I stack a single brick, I am working through what this kiln is for: how often I will fire, how much space I need, and what kind of salt fired pottery I want to make. Size, fuel and flame path, materials, and the northern Utah climate all shape the design.
- Too small means half loads; too large means every firing is a big financial commitment
- A salt kiln has to be gas fired, so burner placement and flue size matter
- Salt vapor eats brick, so materials are chosen for the long haul
Building a salt kiln does not start with bricks. It starts with questions. Before I mix fire clay or stack a single course, I have had to slow down and think through what this kiln is actually for. Not just technically, but practically. What kind of salt fired pottery do I want to make? How often will I fire? How much space do I realistically need?
Salt kilns are not casual projects. Once they are built, they define the studio.
Why build instead of rent?
I fell in love with salt firing during my time at Utah State University. Being part of those firings showed me what atmospheric firing could do, and how flame and sodium vapor shape a surface differently than any brushed glaze. But access is limited. Salt kilns are not common in Utah, especially in the north. If salt fired pottery is going to be central to my work, I cannot depend on borrowing kiln space forever.
Size matters
One of the first decisions is scale. Too small, and you are constantly firing half loads. Too large, and the kiln becomes expensive and inefficient to run. I am designing for a kiln that supports steady production without becoming overwhelming: enough chamber space to explore stacking patterns and flame path variation, because that is where salt firing gets interesting, but not so large that each firing becomes a massive financial commitment. Salt firing is not just heat. It is fuel, time and planning.
Fuel and flame path
A salt kiln needs to be gas fired. Electric kilns do not allow the atmospheric movement that salt vapor needs to travel properly through the chamber. That means burner placement matters, flame path matters, and exit flue size matters.
The kiln is not just a box that gets hot. It is a controlled environment where combustion and airflow decide how the salt moves. If the flame does not travel well, the surfaces will not develop. I have spent time studying traditional updraft and downdraft designs and how other salt kilns manage heat distribution. There is a balance between efficiency and character. Too even, and you lose some of the atmospheric variation. Too chaotic, and you risk uneven firing.
Materials and longevity
Salt vapor is corrosive. It eats at kiln brick over time, so material choice matters from the beginning: high quality firebrick, proper arch support, and replaceable components where they are needed. This kiln is not a short term experiment. I want it built to last.
Location and climate
Northern Utah adds its own considerations. Dry climate, winter temperature swings and wind exposure all affect firing consistency and fuel use. Placement has to account for ventilation and safety, especially when salt goes in at peak temperature. A kiln does not exist in isolation. It exists in a landscape.
Looking ahead
Right now I am still in design and planning: sketches, measurements, research, budgeting, conversations. There is a difference between dreaming about a kiln and committing to one. Every early decision about size, fuel and airflow will shape how surfaces develop and how often I can fire, for years. The bricks are not stacked yet, but the direction is clear.
Before you size a kiln, count what you actually make in a month and how long it takes you to fill a shelf. A kiln you can fill every few weeks will teach you far more than a big one that sits half empty.
Every choice on paper now turns into a surface on a pot later. I would rather slow down at this stage than live with a rushed kiln for twenty years.
