Our system is NOT a lance jet wash! The machine is specifically designed to clean hard surfaces and WILL NOT remove sand from the bed of the drive which in turn could cause the blocks to sink.
The system only uses water, and when dry, we re-grout the joints with kiln-dried sand & then seal the joints with Block Paving Sealer. We use RESIBLOCK, the best sealer on the market. The sealer will make the jointing sand hard like the brick blocks & therefore eliminate the growth of algi and weeds with a 2-5 year guarantee depending on the sealer.
Superior Block Paving Sealer provides the higher guarantee of 5 years and a bonus 2-3 year oil and stain protection.