Should you use hot water or cold water to flood a backyard rink
If you’ve spent any time around backyard rink builders, you’ve probably heard this debate:
Hot water or cold water—which is better?
There are some strong opinions out there, and the science is pretty interesting. While a lot of people swear by hot water, I’ll be honest:
I almost always flood with cold water.
Plenty of rink purists will disagree, but in my experience, the benefits of hot water don’t really justify the extra hassle, time, and cost. You can get great ice without overcomplicating it—and that’s what most people actually need in their backyard.
Why Water Temperature Even Matters
When you flood your rink, the goal is simple:
lay down a thin, smooth layer that freezes clean and even.
Water temperature can affect:
How it spreads
How it bonds to the existing ice
How clear the ice looks
How fast it freezes
But here’s the key—temperature matters a lot less than technique.
The Case for Hot Water (Why People Swear By It)
There’s a reason hot water gets talked about so much.
What People Like About Hot Water:
It can help melt down rough spots and skate grooves
It tends to produce clearer ice with fewer bubbles
It flows nicely and can self-level a bit better
There’s some interesting science behind it, like the Mpemba effect: the observation that very hot liquids or colloids (such as ice cream) can freeze more quickly than colder ones, for similar volumes and surrounding conditions,.
The Downsides (Why I Don’t Use It Much):
You need access to hot water (not always practical outside)
It takes more time to set up
It can cost more depending on your setup
It adds complexity to something that doesn’t need it
Why I Stick With Cold Water
Cold water just works—and it keeps things simple.
What I Like About Cold Water:
Freezes fast, especially in Minnesota temps
No setup—hook up the hose and go
Consistent and repeatable
Easier to flood more often, which matters more than perfection
If you’re maintaining your rink regularly, you don’t need hot water to “fix” the surface—you’re staying ahead of it.
What Actually Makes Great Ice (This Matters More)
Here’s the truth most people figure out after a season or two:
👉 It’s not about hot vs cold—it’s about how you flood.
Focus on this instead:
1. Keep It Thin
Thin layers freeze better, smoother, and faster—every time.
2. Flood Often
Don’t wait until your rink is beat up. Quick, consistent floods win.
3. Always Clear Snow First
Snow ruins floods. Take the extra 10 minutes.
4. Flood at the Right Time
Nighttime or colder parts of the day are your best window.
When Hot Water Might Make Sense
Even though I lean cold water, there are a few situations where hot water can help:
You’re trying to fix a really chewed-up surface
You want that super clear, “showpiece” ice
You’re doing a full reset flood and want it perfect
But for most backyard rinks? It’s optional, not essential.
So… Hot or Cold Water?
If you’re looking for the simple answer:
Cold water → practical, fast, and more than good enough
Hot water → useful in certain situations, but not required
If you’re just trying to build a great backyard rink your family will actually use, don’t overthink it. Cold water will get you there.
Final Thoughts
There’s a tendency to over-optimize backyard rinks—chasing perfect ice instead of just enjoying it.
In reality, the best rinks come from:
Staying consistent
Keeping floods thin
Working with the weather
Whether you use hot or cold water, the goal is the same:
get outside and skate.
