anyone built a roll-in oven?

[FigureLLC]

We're ready to build a bigger oven, I'm thinking 4x4x6. It's be great if we would be able to roll a rack straight into it. I looked around on here and didn't see anything like that, but I'm pretty sure some people have one. With my current knowledge, here are my concerns:

1) The bottom would probably be a single-wall piece of sheet metal. The repeated heat/cool cycles would be bad for the concrete floor, no?
2) How would the bottom door seal work?
3) I'd like the oven to be natural gas, so I couldn't mount the burner plate under the floor, so I'd have to have some kind of heat exchanger mounted to the rear, which would increase the oven's footprint, slow heating, and probably reduce the size burner I could use.

Is this just more trouble than it's worth? How do you guys load racks into your big ovens that sit off the floor? Maybe a clever racking system would be a better solution. ...Or perhaps a ramp is all we'd need.

[corecoatings]

1) The bottom would probably be a single-wall piece of sheet metal. The repeated heat/cool cycles would be bad for the concrete floor, no?


If there is proper circulation at the bottom 300 too 400 degrees is not going to cause the concrete floor to do anything but maybe sweat. If you preheat, the moisture will eventually evaporate.






2) How would the bottom door seal work?

Look into high temperature door seals and or door sweeps. This is basically expensive. Another option is to use high temp mesh which is what I have done. It acts an insulation that is flexible and does a good job of wadding under the door.


3) I'd like the oven to be natural gas, so I couldn't mount the burner plate under the floor, so I'd have to have some kind of heat exchanger mounted to the rear, which would increase the oven's footprint, slow heating, and probably reduce the size burner I could use.


Yes, building a fire box will probably be the most challenging. I am looking into modding a propane heater instead of an incinerator burner as the a/f is probably better regulated so there is less soot being placed into the air steam. This is my biggest problem when doing anything white or light. You can see the soot lay out in certain places. but you are using cleaner burning natural gas so your results will probably be better.