Permies likes cob and the farmer likes Anyone try a cob hot tub? permies
  Search | Permaculture Wiki | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login


(the sound is wonky for the first 20 seconds)

daily-ish email

micro heaters

rocket mass heater

wofati

permies » forums » building » cob
Bookmark "Anyone try a cob hot tub?" Watch "Anyone try a cob hot tub?" New topic
Author

Anyone try a cob hot tub?

Rusty Bowman


Joined: May 30, 2009
Posts: 117
Location: Idaho
    
    1
A wood fired hot tub has been on the back of my mind for a long time. Never thought of making one of cob though. Has anyone built one like that in the following link: https://www.facebook.com/photo.php?fbid=327390867313984&set=a.174879205898485.49813.147479555305117&type=1&theater

I'm thinking this could be a fun project!


Earthen Exposure
-permaculture
-original wood sculptures
-primitive implements for museums & the discriminating collector
-resource guide for practical & sustainable lifestyles
________________________

www.earthenexposure.com
Darin Lightning


Joined: Sep 28, 2012
Posts: 1
Rusty,

I think it would work, if you coat the interior with poly-modified cement over your cob foundation and frame. Seems like the cob would be a good insulator, but you would have to transition the interior from the silt structure (that water will destroy) to the cement structure and coating. Not sure exactly how that would work, but if the cob frame were sturdy enough, it shouldn't be too much of a problem to do a tough and flexible concrete coating inside the tub. Probably keep it simple on the plumbing, and it should work like any built-in spa. I'm in Boise, too, so if you want to give it a shot, let me know and maybe I can help!
Rusty Bowman


Joined: May 30, 2009
Posts: 117
Location: Idaho
    
    1
Thanks, Darin. For ease, I was thinking about putting cob around an old steel tub. Might not be as elegant as what I think you're describing...but I don't know that I'm that ambitious.

Any way, it's good to see another poster from Idaho. I'm in Twin.

r
Olivia Helmer


Joined: Oct 02, 2012
Posts: 72
Location: west marin, bay area california
    
  12
there is a book written by becky bee that tells how to do it. I have never made one but i own the book and have pondered making one for a long time. I have been pondering making one with a metal water trough instead of a bathtub.
R Scott


Joined: Apr 13, 2012
Posts: 1838
Location: Kansas Zone 6a
    
  19
OH, that is so good. Cowboy tub with class. and efficiency.


"You must be the change you want to see in the world." "First they ignore you, then they laugh at you, then they fight you, then you win." --Mahatma Gandhi
"Preach the Gospel always, and if necessary, use words." --Francis of Assisi. "Family farms work when the whole family works the farm." -- Adam Klaus
Jeremy Krieg


Joined: Nov 25, 2012
Posts: 8
the hot tub looks like i great idea,

I was wondering whether you had considered more of a rocket mass heater design , i would be so much more efficient

 
I agree. Here's the link: food forest dvd
 
subject: Anyone try a cob hot tub?
 
Similar Threads
Cob Durability - Case Study in cool, damp winters. Victoria B.C.
Rocket stove to heat hot tub ?
John's Cottage and Hot Tub Structure --- Built by Dale
Massive Thermo Mass Battery Suggestions
cob--- Aquaponics/swimming pond inside house
cast iron skillet 49er

more from paul wheaton's glorious empire of web junk: cast iron skillet diatomaceous earth sepp holzer raised garden beds raising chickens lawn care flea control missoula electric heaters permaculture videos permaculture books