How to Repair Cement Ponds
Cement ponds crack due to frost heaving and other forms of weathering. You can patch cracks with concrete, but this temporary solution usually lasts for only a season of two and it alters the water's pH level (acidity). You can apply a fish-safe rubber membrane for a more permanent solution to the cracking problem. Use either a paintbrush or paint roller to apply the rubber membrane. Wait at least a week before refilling the pond with water and reintroducing fish. Does this Spark an idea?
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Things You'll Need
- Bleach
- Scrub brush
- Paintbrush or paint roller
- Cement primer
- Liquid rubber membrane
- Squeegee
Instructions
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1
Remove all fish and plants from the concrete pond, and drain it. Mix a mild bleach solution, and scrub the pond's walls and floor to remove dirt, algae and stains. Allow the pond to dry.
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2
Use either a paintbrush or paint roller to apply a cement primer to the pond. Allow the primer to dry according to the manufacturer's directions.
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3
Pour some liquid rubber membrane onto the pond's floor. Use a squeegee to spread the membrane. Keep the membrane about 1/8-inch thick. The membrane wll level itself over a flat pond floor.
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4
Use a paintbrush to apply membrane to the pond's walls, maintaining the 1/8-inch thickness.
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Tips & Warnings
The membrane cures best in temperatures above 55 degrees Fahrenheit.
