Sweep Polymeric Sand into Joints

What happens here

After all pavers have been laid, the next step (step 7) is to sweep polymeric sand into the joints. This involves spreading the polymeric sand over the paver surface and using a broom or brush to work it into all the gaps between individual pavers. The presenter explains that because paver joints are typically very tight, sweeping alone tends to trap sand only at the very top of the joint, leaving a 'dead space' at the bottom that isn't filled with sand.

Goal: Fill the gaps between laid pavers with polymeric sand.