You walk out to your garden to enjoy your stone outdoor fountain, only to find the basin empty and a damp patch on the patio.
It’s a homeowner’s nightmare: A crack. Whether caused by winter freezing or accidental impact, a leak can feel like the end of your fountain's life.
But don't panic. You don't need to replace it. Most concrete fountains are incredibly durable, and 99% of cracks can be fixed in under an hour with simple materials you can buy at a hardware store. Here is how to fix a crack in a concrete fountain like a pro.
Step 1: Diagnosis & Preparation
Before you buy glue, check the damage.
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Hairline Cracks: Thin lines that barely open up. These usually just need a sealer.
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Structural Cracks: Visible gaps where you can fit a fingernail. These need a filler (Epoxy).
Crucial Step: Drain the fountain and let it dry completely. Do not try to repair wet concrete. The adhesive will not bond.
Step 2: The Fix (Using Epoxy Putty)
Many people ask: "Can I use silicone to repair a fountain?" We recommend Two-Part Epoxy Putty instead. Silicone can peel off over time, but epoxy cures as hard as the stone itself.
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Clean the Crack: Use a wire brush to remove algae and loose debris from the crack.
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Mix the Putty: Break off a piece of the epoxy putty. Knead it with your fingers until the two colors mix into a uniform gray/white color. This activates the hardener.
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Fill: Push the putty firmly into the crack.
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Smooth: Wet your finger and smooth the putty over the surface so it blends with the stone. Let it cure (usually 15-60 minutes).
Step 3: The Shield (Sealing the Fountain)
Once the crack is plugged, you need to waterproof the entire surface. Concrete is naturally porous (like a sponge), and over time, water can seep through invisible pores.
"How to seal a concrete fountain?"
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Buy a high-quality Concrete & Masonry Sealer (Clear).
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Use a paintbrush to apply a generous coat to the inside of the basin and bowls.
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Let it dry for 24 hours before refilling with water. Pro Tip: We recommend resealing your fountain once a year to keep it looking brand new.
4. FAQ: Common Questions About Fountain Repair
Answers to the top search queries for fixing water features.
Q: How to fix a crack in a concrete fountain?
A: The best method is using two-part epoxy putty. Clean and dry the area, knead the putty until mixed, press it firmly into the crack, and smooth it out. Once hardened, it creates a permanent, waterproof bond.
Q: What do you use to seal a concrete fountain?
A: Use a clear, penetrating Concrete or Masonry Sealer (often found in the paint section). Avoid shiny "lacquer" sprays unless you want a wet look. A penetrating sealer waterproofs the stone without changing its natural appearance.
Q: Can I use Flex Seal on my fountain?
A: Rubberized sprays (like Flex Seal) can work as a temporary emergency patch, but they often look unsightly and can peel after sun exposure. For a permanent, invisible repair on high-end stone fountains, Epoxy Putty is superior.
Conclusion
A crack doesn't mean your fountain is broken; it just means it needs a little love. With a bit of epoxy and a coat of sealer, your outdoor water feature will be watertight and ready to flow for another decade.