The key to longevity with your garden patio and driveway is maintenance.
We always recommend jet washing your hard landscaped surfaces every 12 to 18 months. This will stop green algae building up and discolouring your hard surfaces.
Leaving your hard surfaces without a good thorough clean for to long will permanently discolour them forever.
No special patio cleaning chemicals are required just a good powerful jet wash will do the trick.
Have fun and enjoy.