This project began somewhere in March. Okay, maybe that is not entirely true: it actually began when I was sixteen years old, when my big brother -the most inventive engineer I know- crafted a wood burning stove with a water heating system to warm up our inflatable kiddy pool. Due to the enormous succes of the invention, he and my dad quickly replaced the inflatable pool by a more durable tub made from something that was previously used as a cattle watering tub, and hence the first DIY hot tub of our family was born.
When I first took Joost to my parents' house, and showed him the hottub made by my big bro and my dad, he immediately responded: "We should totally make something like that!
The idea lingered, and when we bought our house last year, one of Joost's first questions was: "shall we build a hot tub in the garden?"
Forwarding a few months to March, when Joost restated the idea: "we really should build a hot tub, it would be awesome for next summer!" He was right, and plus: we really had a corner in our garden that was in dire need of a bit of some serious redesigning:
|"I don't see your problem with it, human"|
So, with my family's hot tub design in the back of our mind, we set to work.
We bought an old IBC container online. For those of you who don't know it - I didn't- an IBC container is a reinforced container used to store great amounts of liquids. It's strong, watertight and conveniently comes with a drain. We made sure to ask that it hadn't been used for harmful chemicals, since it would possibly ruin the bathing experience a bit if chilling in the hot tub would make our skins turn green.
|something like this!|
At home, Joost got rid of the top bars, as well as the top part of the plastic container within, While I did some serious digging in the garden ( you know, for reasons), and finishing the shed we build, which you can see in the background of the photo.
Next up was a heating system.
like the one at my parent's house, we basically wanted a firewood stove, with a heat exchange unit in it, where you would pump the water through to heat it. To comprehend what I'm on about, this is what it looks like in schematics:
Now, While my big bro built the whole thing himself, made from parts he bought at the scrap heap and welded it all together, neither Joost nor me can weld, so we went online to look for a substitute. Amazingly, a second hand version was offered online for quite a modest price. So of course, we picked it up :)
|see the heat exchange unit on top?|
It worked, but especially this early in March, the water lost too much of its temperature to the cold air. So, a bit of insulation was in order!
We had a lot found a of polystyrene foam sheets in the old shed, and thought in to be quite a good, water proof insulation material. So Joost began insulating the tub, and finishing it all with wood.
Of course, we also needed a place to store the wood for the hot tub ( and the house of course ;)) so we also build a wood storage, mainly from salvaged wood, a few spare roof tiles, and some salvaged pavement slabs.
|another days work! ( hmm, will it ever stop?)|
And the almost finished tub!
|it only needs a lid!|
|Joost is quite happy with the combo of |
|and me enjoying a morning swim!|
|I really dig it, and I think it looks quite cool too?|
IBC container: second hand 40,-
insulation: waste material 0,-
wood: new 50,-
pump: new 30,-
installation material: new 20,-
heater: second hand 150,-
new, comparable hot tub: approx. 1600,-
I absolutely love it! and big bonus: not only did we improve a previous ugly part of the garden, and create a hot tub for a modest price, we also saved quite a few products that would otherwise have gone to the landfill, such as the reused insulation, pavement slabs, and the old wooden beams. so I very much think of this as a succes!
What do you think of it? I'd love to know!