You should pull up and remove weeds by hand as and when they appear. If it is a regular problem, you might need to reseal the paving. In extreme cases, the sub layer itself may need to be re-laid. You can use weed killer, however some paving can be discoloured by stronger weed killers.
Duns
Duns (population 2,594) is a community in the Scottish Borders, Scotland. It was the county town of the historic region of Berwickshire. Duns has the largest buying centers in a distance of 15 miles (24 km) as well as till 28 January 2015 housed the Berwickshire Sheriff Court, it no longer has any type of primary workplaces of the Scottish Borders Council, however merely retains a Registry Office. Because the early 1990s Duns as well as its immediate location have seen significant housing development, some debatable. A growth near the golf club when driving to Longformacus just outside Duns is one such example, as it was built on greenfield websites. Opposite the old Berwickshire High School a brand-new modern High School has actually been built to replace the mid-1950s structures in which the college was formerly housed. The new Senior high school opened up in February 2009. The old secondary school is now being redeveloped into a primary school, with the rugby as well as football club using the old playing fields.