The original cobblestone pavers were natural round stones collected from the riverbed. They are different from the quarry and special-shaped paving stones that are now usually sold as cobblestones, also known as paving stones or Belgian blocks. Today, the term cobblestone has become any paver made of natural stone, especially the most popular shaped Belgian block so far. The advantage of this type of pebbles is that the size and shape are relatively uniform, making it easier to install than round pebbles.
Granite and other types of cobblestone have been used in roads, driveways and sidewalks for centuries, and many of these surfaces are still in use. Granite pebbles have many advantages, and apart from the high price, there are no other disadvantages. The cobblestone paved surface has better standing ability than any other material, and can create a unique "old world" charm, which can add substantial charm and value to a beautiful house.
The driveways and sidewalks of the cobblestone pavers require little maintenance. Just wash them once or twice a year, and then remove all the weeds growing on the joints. The well-built cobblestone paver driveway can remain stable and function normally for up to 100 years, and when it fails, it is usually because the foundation fails, not because the stone itself will wear out or crack.
On sandy cobblestone pavers, the sand at the joints may settle or wash away. When this happens, just sprinkle more sand and sweep it into the seams. Sometimes, the foundation of the cobblestone surface may sink, but it is relatively easy to remove the stone, lay other foundation materials and reinstall the stone. This is most common on lanes with heavy traffic, but the correct preparation of paving beds usually prevents it.
Cobblestone paving combined with mortar is more prone to problems, especially in cold climates where frost/thaw cycles can cause cracks to break. Regular inspection and regrouting can keep the surface in good condition.