All the dirt, including the weeds, on and between the interlocks will be removed with a very powerful 4200 PSI pressure washer. Stains will be removed as well leaving a clean surface to work with.
Gaps will be filled with high quality polymeric sand. The sand will cement when sprayed with water ensuring that no weeds will appear for years to come.
The surface is then covered with 2 coats of highest quality sealer to bring out the rich look as well as to protect the surface from wear and tear, rain, salt and solar radiation.