Found this cool project by Brooke from Austin, Texas using Sani-Tred to seal a shipping container to make a backyard swimming pool.
We have treated it, as we posted previously, like an inside out ship: rust is part of our expectation and freaking out about a few spots is not our game. we have been using (periodically) a product called water weld made by jb weld to cover small rust spots, and it is a white two-part paste epoxy that cures in about 10 minutes, even immersed in water. and about every 2-3 years we have repainted the pool with olympic’s two-part pool epoxy called zeron. I built the shipping container swimming pool originally with a 1 hp pump, a zeobrite sand filter, and a natural gas heater. Hindsight being 20/20, we should have skipped the heater. While the shipping container pool is mostly in-ground, it isn’t totally underground, and instead of a wonderfully insulative surrounding of earth and 18 inches of concrete, we have steel. It’s like literally heating the outdoors… so we have never used the heater.
From a pool design nerd perspective, I have really wrestled with how to get the plumbing to better mimic a normal in-ground pool. we started out with a few assumptions: a pool made of a container could move a little bit relative to the earth around it when it wasn’t filled with water, and the plumbing might move or might break. So I decided to put no main drain in the bottom of the pool… it was a best guess that it might break off with shifting and leave us with a very hard to fix major leak. That said, I needed a way to pull water back to the pump, and I was super afraid to cut too many holes in the container. over the years, the ways I’ve learned to cover and manage rust have turned out to be simple, but they didn’t look simple before I knew them. So… for a solution that worked for quite a while (5 years) i used a suction side skimmer that floated in the pool with a vacuum hose going out and down to the bottom of the pool. it worked. but since it was the only suction, if it was blocked, or knocked loose by a swimmer, I would have burned out the pump. Then about year 5/6, it really seemed like there must be a better way to do it, and I started thinking about using an in wall skimmer like a normal concrete pool, and started studying every pool I was in, everywhere. then, I was visiting friends in Denver and they took me to visit this:
Which i knew existed but hadn’t seen, and it was like my pool had a twin! (it’s now the same color blue as mine.) and they had done the plumbing the way i had been pondering. so…. I did this:
It took buying an above ground pool skimmer (I buy everything online at doheny’s – free shipping!), hiring a welder to cut a hole in the side of the pool and fabricate a frame, then coating and painting all the raw metal (and doing a quick recoat of the bottom of the pool since it was drained anyhow) with sani tred’s multi-step no rust paint system and then olympic’s zeron. Then, with the deck in the picture above all out of the way, the skimmer was bolted onto the side of the pool and secured to the 2×6’s that form the deck frame. the suction line from this skimmer is a 2″ line, which increased our flow to the pump many times over… the hole from the old suction line is still at the other end of the pool and we’re now using it to vacuum the bottom. the whole system now runs more efficiently, and in all my reading, I realized that i had been wearing the pump by having too small of an inlet line in all these years. it made the decision making for this little improvement worth it in multiple ways. now the pool is a no-brainer, since the filtration system can do its job with no worry from me, and does it better than ever. the pool is now, finally, complete.
Learn more about DIY shipping container pools here.