Water ponding on concrete surfaces can lead to various issues, including deterioration, slip hazards, and aesthetic problems. To fix water ponding on concrete, you’ll need to improve the drainage and slope of the surface to allow water to flow away. Here’s a step-by-step guide to help you address this issue:
Tools and Materials You’ll Need:
- Concrete mix (if needed)
- Straightedge or leveling tool
- Gravel or crushed stone
- Wheelbarrow (for mixing concrete, if necessary)
- Safety Precautions:
- Ensure your safety by wearing appropriate clothing, gloves, and eye protection when working with concrete.
- Assess the Ponding Area:
- Identify the areas where water is ponding on the concrete surface. Note the extent of the ponding and the locations where it’s most pronounced.
- Determine the Desired Slope:
- Decide on the direction and slope you want the water to flow. Typically, concrete surfaces should have a minimum slope of 1//////////////////////////////////////////////////////////////////////////////////////////8 inch per foot (1% grade) to facilitate proper drainage.
- Remove Debris and Dirt:
- Clear the concrete surface of any debris, leaves, or dirt using a broom or shovel. Ensure that the surface is clean and free from obstructions.
- Identify Low Spots:
- Locate the lowest points in the ponding area, as these are the areas that need to be raised to create the desired slope.
- Add Gravel or Crushed Stone:
- For minor ponding issues, you can often improve drainage by adding a layer of gravel or crushed stone to the low spots. Spread a layer of gravel, leveling it to create the desired slope.
- Fill with Concrete (if needed):
- If the ponding is severe or if there are significant depressions in the concrete, you may need to fill these areas with fresh concrete mix. Prepare the concrete mix according to the manufacturer’s instructions and fill the depressions, leveling the surface with a trowel or straightedge. Make sure the newly poured concrete follows the desired slope.
- Smooth and Finish the Surface:
- If you’ve added new concrete, use a trowel to smooth and finish the surface to match the existing concrete. Blend the edges of the new and existing concrete for a seamless appearance.
- Cure the Concrete (if new):
- If you’ve added fresh concrete, follow the curing instructions on the concrete product packaging. This typically involves keeping the concrete damp and covered for several days to allow it to cure properly.
- Maintain Proper Drainage:
- Regularly inspect the concrete surface to ensure that water drains away as intended. Keep the surface clean to prevent debris from impeding drainage.
- Monitor and Adjust as Needed:
- Over time, monitor the concrete for any signs of ponding or deterioration. If you notice issues, address them promptly to prevent further damage.
- Consult a Professional (if necessary):
- If the ponding problem persists or if it’s caused by underlying issues with the concrete slab, consider consulting a professional concrete contractor or engineer for a thorough assessment and repair recommendations.
Proper drainage and slope are crucial for preventing water ponding on concrete surfaces. Addressing this issue promptly can help extend the life of the concrete and improve safety by reducing slip hazards.