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.
Berriedale
Berriedale is a tiny estate town on the northern eastern shore of Caithness, Scotland, on the A9 roadway between Helmsdale as well as Lybster, close to the boundary between Caithness and Sutherland. It is protected from the North Sea. The town has a parish church in the Church of Scotland. Just southern of Berriedale, on the way to the north, the A9 passes the Berriedale Braes, a steep drop in the landscape (brae is a Scots word for hillside, a loaning of the Scottish Gaelic bràighe). The roadway drops down outstanding (13% over 1,3 kilometres) to link a river, prior to increasing once again (13% over 1,3 kilometres), with a number of sharp bends in the road-- although some of the barrette bends and also various other neighboring slopes have been relieved over the last few years. The impracticality (as well as cost) of linking the Berriedale Braes prevented the structure of the Inverness-Wick Far North Line along the east coastline of Caithness; instead the train runs inland via the Flow Country. Berriedale is located at the end of the eighth stage of the coastal John o' Groats Trail.
