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Stesso

Seal and Insulate the Tank

9:55
47:36
78.8K views

At 9:55 in

I Built A Cold Plunge With Filtration That ACTUALLY WORKS

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What happens here

Black silicone sealant is applied to all interior seams of the wooden frame and smoothed with a gloved finger. This sealing prevents any water from splashing onto the wood and causing deterioration, protecting the insulation within the frame. The poly tank is then insulated. First, spray foam insulation (Great Stuff Gaps & Cracks) is applied in layers to the exterior of the inverted tank, allowing it to expand and fill the voids. This process is repeated for the sides after the tank is upright. Due to some difficulty with the spray foam application, the builder also adds rigid foam insulation panels (Owens Corning Foamular NGX 150) cut to fit the curved interior of the wooden frame, providing an additional layer of thermal protection. The goal is to make the cold plunge extremely well-insulated, similar to a high-performance cooler.

Goal: Interior seams of the wooden frame are sealed with silicone, and the poly tank is insulated with spray foam and rigid foam panels to ensure cold retention.

Tools and materials

  • Caulking Gun
  • Marker
  • Measuring Tape
  • Utility Knife
  • Black Silicone Sealant DYNAFLEX 230
  • Disposable Gloves

What they say

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want to avoid using screws only for the reason of uh it's not going to hold that great going through. Oh, I'm bleeding. That's cool. Uh through this plywood here. Also, I don't want to see screw holes. I'd rather deal with couple of little pin holes that won't even be seen by the time we have an apron on them. That's what's going on in my my crazy brain right now. So, love it or hate it, it's there. Take just a little scoch off this way. Like that. Split that little scoch over here. So, here's what I came up with for this radius to keep this tighter. I just put about a 5° bevel on both sides of the sides here. And then I'm also putting glue not only here, here, but also along the sides for a little bit added support. So once it goes on, this creates more of a minimalistic kind of look. So as you can see, they're not. And maybe there's a 64th of an inch right here. Pretty good. Not bad at all. It continues everywhere versus if we didn't do these cuts both sides, they're going to be super wide gaps, like almost like a/4 in. So it's working. 5° bevel and the table saw, no problem. The 16 gauge brad nails are holding well. I feel confident about it. We got 49 2x4s all attached nice and dry. We have siliconed all the seams on the inside to keep all the moisture out from outside in actually. And then we have our foam insulation on our tub. And we ran into some problems, but we're figuring that out as we go.

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