How to Insulate a DIY Cold Plunge 

I appreciate the work, I’m in the process of making mine thanks to these videos. Thank you🎉

Awesome work! I'm in the process of spray foaming mine now (in stages). FYI, you shouldn't have to clean out the gun between every can. They only gum up if you detach the old can without immediately connecting a new one. It's the moisture in the air that makes the foam cure inside the gun. Also, now that you have an air gap underneath, you could get additional benefit from a reflective radiant barrier, (only works with an air gap). Even aluminum foil will work.

I have a custom drip pan for the tub, so ill be applying the foam from the sides. Going with rigid on interior of walls with spray foam around the tub itself. Also going to do rigid between 2x on bottom, under drip pan, will be elevating one end of the build utilizing some washers between the wheels and bottom of frame to encourage water in pan to collect towards mech side where it can funnel into drip hose, also putting some desiccant in that area. There will probably be some trial and error but im keeping my plunge indoors (storage bench/futon build) so condensation must be contained. Will be getting a dehumidifier for the room for extra protection.

Ugh thank you so so much for this channel!! I'm going to slowly be building g my cold plunge. Luckily I like in Idaho and I won't need to insulate it for a little while 😝

Is there any wisdom in leaving the piping without insulation around it for purposes of working on the piping?

What are the disadvantages of using fiberglass roll insulation rather than expanding foam? It would be less expensive and quicker and easier to apply. Thanks!

Do you know what kind of impact the insulation made? Any data?...such as the time it holds temperature vs uninsulated.

Thanks so much for the great information. I really appreciate all your videos! Are you concerned at all about mold build up since you are effectively closing off the ability of the condensation and spillage of water from draining out to the floor with the spray foam? That was my main concern here. Thanks.

Love the videos man! Thanks for sharing

you mentioned you used pic material for the top panel. is there a video I missed that shows what you did for the top panel?

I filled mine up with packing peanuts $18 dollars. only took 10 minute with no clean up. The foam cans cost too mush and make a mess. Ain't nobody got time for that. Love your channel, Great content.

Do you have a video or a plan for the siding on the 150 gallon Rubbermaid stock tank?

Did you do anything to fix the tub in place so it doesn't shift when you flip the assembly over for insulating?

Do you think this step is necessary if the plunge will be in a garage? Thank you

Does the spray foam remove the condensation on the exterior of the tub? Garage is 73 degrees and water was 53. Loads of condensation, worried about this inside the cabinet or does the foam remove this effect? Thank you

Fantastic plans and videos, Joe. Thank you! What is the rationale for not closing off the bottom? I noticed that some of the primo plunges (Renu, Bluecube, etc) seem to have an additional panel on the bottom. I was thinking of adding 1/2" marine ply on the bottom. Does condensation make this a bad idea?

How do you dump the water out and clean the cold plunge?

at about 1:11 in this video I notice a drain valve set up through the side of the tub, so that you can drain the tub. Can you share how you did the plumbing and what valve you used?

Love this and will be insulating this weekend (hopefully). Do you have a reason for not covering the sprayed insulation on the bottom? (Like using PVC panel or something to limit exposure to the foam)

Wait, you haven’t wrapped with a moisture barrier! In the wrapping video there is no insulation inside yet. Which comes first?..

Any thoughts on using pourable boat foam for insulating?

So this is prob a dumb question, but have you thought about putting heavy dudy casters on the frame? Just in case you wanted to move it around after draining? Or would the weight of this just be too much?

I used the cones and had a lot of scrap 2” insulation board but 6 cans of the same stuff didn’t even get me half way full. I have the same build plans too.

Thoughts on using a pour foam?

Ima try this

How much would you charge if you made one for me?

Can you please send the link for the 2 vents you placed on the outside so the chiller doesn’t overheat.

Are you encasing the pump, chiller and ozone generator in expanding foam?

Do you have two outlet lines, one on each side it looks like?

I wonder if the post hole foam would be better and cheaper???

I am thinking about putting the foam insulation board in place, then wrapping it with moisture barrier. Any issues you can see with doing it this way? Also, is the idea to have the plumbing from the tank back to the mechanical area in place before sorting in the foam, covering that plumbing in the process?

Do you have any plans for building or insulating the ice barrel

Does the foam type matter? I live near Dallas, and have a bunch of great stuff gaps n cracks foam.

Have any of you guys tried this during the winter? Just wondered how this would fare with weather regularly at -10*C to -20 regularly (14F to -4F). Would the internal water freeze?

Did you think to use pour foam? Or was that not economical?

Are you hard mounting the tub to the frame?

gonna have to build one of these😅😅

why not just use rubber K-flex insulation and glue?

what material did you use for the sides of the frame?

What was total cost of the build?

How the hell do you drain the tub?

I think I’m missing some videos

FYI, I’d wear a mask when cutting that insulation.

In my opinion,,,using spray foam is too expensive and has drawbacks,,,too many air pockets which leads to condensation. A friend used this method and he can smell mold from his tub. I went a different route. I used spray adhesive to cover all the exterior surface of the tub with a moving blanket. I then wrapped with fiberglass insulation bats,,,used spray adhesive to initially secure to blankets. Then the arduous part,,,,completely and tightly wrapping tub leaving none of the fiberglass area exposed. I then used spray adhesive to adhere foil wrap completely around tub and sealed the edges with duct tape on top and bottom. Yeah,,,the asthetics might not be good,,,,but I'm sure there are ways around this,,possible rubber shrink wrap,,,etc. I have done 2 tubs,,,,the cattle trough and the rubbermade,,,,and the cattle trough is much easier since the outside of tub is flat, as compared to the rubbermade which has ridges. Anyway,,,neither tub has sweating issues,,,,,I have checked the the three areas where the plumbing go into the tubs,,,and the fiberglass is completely dry after many months. If one is going to stick with foam insulation,,,I would at the very least use a spray adhesive and cover all exposed area with cheap cotton moving blanket,,,,,,wool would be better,,,,but I could not find wool. Anyway,,,definitely learned some things from your channel and appreciate your sharing your experiences.

LOOKS LIKE A BUG FARM