After you’ve laid the pavers, the final step is to use a push broom to sweep polymeric sand into the gaps between the pavers. A 50 pound bag covers about 60-75 square feet of paver surface. The cracks in-between pavers should be filled to the top. Remove all excess sand from the top of the pavers. Use a garden hose with a misting nozzle to dampen the filled joints. Don’t overwater the joints. Allow to dry for 24 hours before any foot traffic.