Hot Tub Forum
Original => Hot Tub Forum => Topic started by: bigger_blue on May 04, 2021, 01:40:53 pm
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I am doing research on building my own backyard tub. I've spent countless hours on the web trying to piece it all together because I am planning a slightly unconventional build. I'm aiming to use brick on a concrete base. I know my way around bricklaying and have a cheap supply of stone and concrete so it seems a logical choice.
So far I've come up with the design below. I am planning a concrete slab, a 3'5ft high round wall out of brick with a square firebox in direct contact with the water. There will be a small hatch to feed the fire on the outside. I will run a 1" stainless spiral tube through the firebox so I should get dual heat transfer, by radiation of the brick from the firebox as well as the hot water running through the tube.
(https://i.ibb.co/3yWnKD6/tub-1.png)
I'm wondering if there is anyone that can comment on this design from personal experience. There is a ton of info on wooden tubs out there, but not so much on brick ones. Questions I'm still fighting with are:
- Why is stone not used more often in hut tub builds?
- Do I need to insulate the bottom and walls? This would add a significant amount of effort to the build
- What to expect from the heating, would this setup work well for a 6ft diameter tub?
- Should I make the benches hollow so the hot gasses from the fire can travel underneath and heat the benches as well?
Any advise, thoughts or questions are highly appreciated!
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The right brick and mortar in the right places will be super important.