If you have an existing patio, walkway, or driveway, you might be wondering: Can I use polymeric sand on old pavers? The answer is yes—you can absolutely rejuvenate an older paver surface with polymeric sand. However, it requires some preparation. To ensure proper bonding, you must first remove the old jointing material and thoroughly clean the joints before applying new polymeric sand.
Why Polymeric Sand Works on Old Pavers
Polymeric sand is a mixture of fine sand and special binding polymers. When swept into the joints and activated with water, it hardens to create a semi-rigid, weed-resistant surface. Using it on old pavers can:
- Stabilize the surface by locking the pavers in place.
- Prevent weeds and ants from returning between joints.
- Improve drainage and reduce sand washout.
- Restore the appearance of your patio, driveway, or walkway, making it look new again.
Key Steps Before Applying Polymeric Sand to Old Pavers
To ensure long-lasting results, proper preparation is critical:
1. Remove Old Jointing Material
- Use a pressure washer, vacuum, or specialized joint-cleaning tool.
- Remove as much of the old sand or debris as possible to ensure deep joints for the new polymeric sand.
2. Clean the Joints Thoroughly
- Get rid of weeds, moss, and dirt.
- Make sure no organic matter is left behind, as it can prevent proper bonding.
3. Allow the Pavers to Dry
- Moisture in the joints can cause polymeric sand to activate prematurely.
- Wait at least 24–48 hours after washing before applying new sand.
4. Apply Polymeric Sand
- Spread the sand evenly over the surface.
- Sweep it into the joints until they are fully filled.
- Compact the pavers to settle the sand deeper.
5. Activate with Water
- Mist the surface lightly with water to activate the binding polymers.
- Avoid flooding, as too much water can wash away the polymers.
Benefits of Using Polymeric Sand on Old Pavers
- Extends Lifespan – Strengthens an older installation and prevents shifting.
- Improves Curb Appeal – Fresh, filled joints make old pavers look almost new.
- Reduces Maintenance – Limits weed growth and erosion, saving you time.
- Cost-Effective Renewal – Restores function and appearance without replacing the entire surface.
Common Mistakes to Avoid
- Not removing enough old sand – Leaving too much debris can prevent the polymeric sand from setting properly.
- Applying in wet or rainy conditions – Premature activation can cause hazing or weak joints.
- Overwatering – Excessive water washes out the polymers before they bond.
- Skipping compaction – Without compacting, joints won’t be filled deeply, leading to early failure.
Final Thoughts
Yes—you can use polymeric sand on old pavers, but preparation is the key to success. By removing old sand, thoroughly cleaning the joints, and following proper installation steps, you can extend the life of your existing hardscape and restore its original beauty. Done correctly, the new polymeric sand can last 5–10 years, keeping your outdoor space stable, weed-resistant, and low-maintenance.
