Applying interlocking sand, often referred to as polymeric sand, is a crucial step in completing a paver installation. It helps lock pavers in place, preventing shifting and inhibiting weed growth and insect infestation in the joints. The process involves several key steps to ensure the sand hardens correctly and provides a durable bond.
Step-by-Step Guide to Applying Polymeric Interlocking Sand
Follow these steps to properly apply polymeric sand and achieve professional results for your paver project. It is essential that the paver surface is completely dry before beginning the application.
- Pour and Spread the Polymeric Sand: Begin by pouring the polymeric sand directly onto the dry paver surface. Make sure to spread the sand evenly across the entire area. As indicated in the reference, this step is critical and must be performed when the pavers are completely dry to allow the sand to settle correctly into the joints.
- Sweep the Sand Into the Cracks: Use a broom, ideally a stiff-bristled push broom, to sweep the sand into the joints or cracks between the pavers. Work the sand back and forth across the surface, ensuring the joints are completely filled from top to bottom.
- Tamp the Pavers: To help the sand settle deeply into the joints and eliminate any voids, use a plate compactor or hand tamper. Compact the paver surface. This action vibrates the sand down, often requiring you to add more sand and sweep again to refill the joints after tamping.
- Clear the Surface of the Pavers: After tamping and ensuring the joints are full, it is absolutely vital to remove all excess sand from the surface of the pavers. Use a broom or a leaf blower on a low setting to clear the paver tops completely. Any sand left on the surface will harden when wet and create a haze or film that is difficult to remove.
- Water the Pavers: Carefully water the paver surface using a hose with a shower or misting nozzle. The goal is to activate the polymers in the sand without washing the sand out of the joints. Water evenly until the joints are saturated, and you see water soaking in. Multiple light waterings a few minutes apart are often better than one heavy watering. Follow the specific product instructions for the correct watering technique and volume.
- Wash the Pavers (Optional): Some product instructions may suggest a final light wash or rinse down the surface to ensure no residue remains on the paver tops after the initial watering has soaked in. Check your specific polymeric sand product guidelines for this optional step.
By following these steps carefully, you can effectively apply interlocking polymeric sand, creating a stable and long-lasting paver surface.
